Re: [Emc-users] G540 Test Update

[gene heskett]

On Monday, April 16, 2012 05:11:33 AM Peter did opine:

> Hi Gene,
> 
> You don't want to use an opto-isolation card with the G540 as it already
> is opto-isolated.
> 
> Cheers, 
> peter

I may be missing something Peter, but the C1G delay is quite ignorable, 
10ns, and its rail to rail 24 ma of drive would have to help.

Cheers Peter, Gene
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Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors

[Andrew]

15 квітня 2012 р. 19:49 andy pugh  написав:

> You need to Halscope the encoder pins (dmesg should tell you which
> gpio pins correspond to the encoder phases) and see if there is a good
> quadrature signal getting into LinuxCNC.
>

Here's the halscope
http://img35.imageshack.us/img35/3557/screenshot1kq.png(pins 12 and 13
supposed to be A and B)
I do not understand what's going on. When I change counter-mode to 1 it
counts only in one direction, and 4 times less distance. I.e. probably
channel  A is OK, but it does not see B.
I checked the encoder connection to 7i39 many times. And just checked this
encoder perfectly works with 7i48.
Could it be pinout error in 7i39 manual or firmware? Anyone has working
config for 7i43+7i39?

Too bad I have not received yet my ordered o-scope to check the signal on
encoder output pins...

Andrew
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Re: [Emc-users] G540 Test Update

[gene heskett]

On Monday, April 16, 2012 05:18:47 AM Gary P. Fiber did opine:

> I need to find the start of this thread. i am running a G540, an Intel
> M525MW board 

Other than both of mine are D525MW's

> with Probotix steppers motors and all 3 axes move fine. I
> just need to calibrate them for proper distance and get the homing Hall
> effect sensors connected.I am not running the charge pump enabled in the
> G540. Am I missing something?
> 
> Gary K8IZ

Probably not Gary, but that should probably be qualified by writing a loop 
that starts and ends 20 thou into a dial indicator and runs back and forth 
2 or 3" a few hundred times, to check for missing pulses, too short a setup 
and hold times on direction reversals and such in the stepper pulse 
generation.  Obviously it should end at the same location it started at.  
Because of backlash, I'd throw away the first run, re-zero the indicator 
and use the second runs results.

As for scaling that should be nothing but math.  For instance the motor 
needs 200 full steps to make one turn, and your drivers are set to do 8 
microsteps
200x8=1600

Then the motor is geared down so it makes 2 revs to turn the screw one rev
so
1600x2=3200

Then the screw is 16 tpi, so it takes 16 turns to move an inch.
3200x16=51200

and that becomes the scale factor for that axis in your .ini file.
Metric machines running in the millimeter mode should divide that by the 
usual inch to mm conversion:
51200/25.4=2015.7480315.

Floating point is fine there.

That may well be more accurate than your screws.  My cheap OEM Z screw, 
moving .1" at a time, has places where either it, or the dial 
indicator, are off by 2 or 3 thou, so I may have to either map it, or put 
decent ball screws in it.  Bring $ in little red wagons, I am trying to 
make a poor mans silk purse out of a 7x12, so I am not expecting micron 
results most of the time.  So my first attempt at mapping will be to prove 
the indicator, its a $60 Grizzly.  Say no more. :(

Cheers, Gene
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Re: [Emc-users] G540 Test Update

[gene heskett]

On Monday, April 16, 2012 06:01:27 AM Kirk Wallace did opine:

> I tried a 75AC541 buffer on the SIIG card:
> http://wallacecompany.com/machine_shop/G540/g540_siig_buf.jpg
> 
> and then tried it unbuffered at 1kHz:
> http://wallacecompany.com/machine_shop/G540/g540_siig_1kHz.jpg
> 
> I got a green LED on both. The SIIG worked at 5kHz unbuffered too, but
> peaked 1 Volt higher at the lower frequency. I made a mistake earlier by
> saying the tests where at 20kHz, they were actually at 5kHz. (4 div. x
> 50us = 200us = .0002 , 1/.0002 = 5kHz)
> 
> I put 1ns in Stepconfig but it seems other parameters are limiting
> the base thread to 10ns.

1 ns is a lock it up too fast setting on my D525MW boards, but 2 ns 
seems fine. 10 ns will hurt the steppers top speeds as the steps in 
speed will be too big.

Do you have hyperthreading disabled in the bios?  And isolcpus=1 as a boot 
option in menu.lst/grub.cfg?  Both of those are needed I believe.

Cheers, Gene
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Re: [Emc-users] G540 Test Update

[Mark Wendt]

On 04/15/2012 07:09 PM, Kirk Wallace wrote:
> I have some scope traces from LinuxCNC's pump below. I haven't had time
> to add text to the pictures yet but I'll try to describe them in this
> message for now. The group of pictures is here:
> http://wallacecompany.com/machine_shop/G540/
>
> 
> Motherboard port, set to SPP in BIOS:
> http://wallacecompany.com/machine_shop/G540/g540_mb_spp.jpg
>
> one trace is at 0 V, vertical divisions are 1 V per div., green LED OFF
>
> 
> Motherboard port, set to EPP in BIOS:
> http://wallacecompany.com/machine_shop/G540/g540_mb_epp.jpg
>
> green LED ON
>
> 
> Rosewill PCI card, set to SPP and EPP, I get the same trace either way:
> http://wallacecompany.com/machine_shop/G540/g540_rw_sepp.jpg
>
> green LED OFF
>
> 
> Rosewill PCI card, with 1k Ohm pull-up:
> http://wallacecompany.com/machine_shop/G540/g540_rw_1kpup.jpg
>
> green LED ON
>
> 
> Startech PCI card, set to SPP:
> http://wallacecompany.com/machine_shop/G540/g540_st_spp.jpg
>
> green LED OFF
>
> 
> Startech PCI card, set to EPP:
> http://wallacecompany.com/machine_shop/G540/g540_st_epp.jpg
>
> swings all the way to 5 V, green LED ON
>
> 
> SIIG PCI card, set to SPP and EPP, I get the same trace either way:
> http://wallacecompany.com/machine_shop/G540/g540_siig_spp.jpg
>
> just enough to turn green LED ON
>
> 
> SIIG PCI card, with 330 Ohm pull-up, set to SPP and EPP, I get the same
> trace either way:
> http://wallacecompany.com/machine_shop/G540/g540_siig_k33pup.jpg
>
> green LED ON
>
> 
>
> Horizontal divisions are 50 microseconds/div. One cycle is 4 div. or
> 20kHZ (?) (base-thread = 10ns, with reset = 1000).
>
>
Kirk,

Is your probe matched to your scope?  It looks horribly 
under-compensated in those pics.

Mark

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Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors

[gene heskett]

On Monday, April 16, 2012 06:15:29 AM Andrew did opine:

> 15 ذ؛ذ²ر–ر‚ذ½رڈ 2012 ر€. 19:49 andy pugh  
ذ½ذ°ذ؟ذ¸رپذ°ذ²:
> > You need to Halscope the encoder pins (dmesg should tell you which
> > gpio pins correspond to the encoder phases) and see if there is a good
> > quadrature signal getting into LinuxCNC.
> 
> Here's the halscope
> http://img35.imageshack.us/img35/3557/screenshot1kq.png(pins 12 and 13
> supposed to be A and B)

Looks like it is but those slow rise & fall times (looks to be slew rate 
limited), coupled with the non-50% duty cycle, could be problematic.

Who made that encoder?

For a scope shot of the opto based one I built, see on my page in the sig, 
at Genes-os9-stf/eagle/quadrature-waveform.JPG where you can see the nearly 
50% duty cycle, and near 90 degree quadrature of the 2 signals.  This seems 
to track well all the way to 2500 rpm, that spindles top speed.

> I do not understand what's going on. When I change counter-mode to 1 it
> counts only in one direction, and 4 times less distance.

Expected I believe but check the HAL manual, its much more accurate than my 
aging memory.

> I.e. probably
> channel  A is OK, but it does not see B.
> I checked the encoder connection to 7i39 many times. And just checked
> this encoder perfectly works with 7i48.
> Could it be pinout error in 7i39 manual or firmware? Anyone has working
> config for 7i43+7i39?
> 
> Too bad I have not received yet my ordered o-scope to check the signal
> on encoder output pins...
> 
> Andrew

Cheers, Gene
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Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors

[andy pugh]

2012/4/16 gene heskett :

>> http://img35.imageshack.us/img35/3557/screenshot1kq.png(pins 12 and 13
>> supposed to be A and B)

I think you might need to move the encoder more slowly, as you only
have a 1mS sample rate available.
It almost looks like there is no actual quadrature offset in the channels.

I think counter-mode only counts up, and only looks at one channel.

> Looks like it is but those slow rise & fall times

That is a Halscope trace, so digital. The apparent slew-rate is just
how Halscope joins the dots.

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Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors

[gene heskett]

On Monday, April 16, 2012 07:05:21 AM andy pugh did opine:

> 2012/4/16 gene heskett :
> >> http://img35.imageshack.us/img35/3557/screenshot1kq.png(pins 12 and
> >> 13 supposed to be A and B)
> 
> I think you might need to move the encoder more slowly, as you only
> have a 1mS sample rate available.
> It almost looks like there is no actual quadrature offset in the
> channels.
> 
> I think counter-mode only counts up, and only looks at one channel.
> 
> > Looks like it is but those slow rise & fall times
> 
> That is a Halscope trace, so digital. The apparent slew-rate is just
> how Halscope joins the dots.

My halscope tracing looks similar to the real scope, shows none of that 
slew rate limited effect, only the expected sample timing jitter. When I 
can run the spindle again, I will do a screen capture and post it alongside 
the 100mhz version.

Cheers, Gene
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Re: [Emc-users] G540 Test Update

[Peter Homann]

An BoB without opto-isolation will give you the same 24mA rail to rail output.

I just didn't see a need to pay for something that's not needed.

But then, it's your choice. :)

Cheers,

Peter

On 16/04/2012 7:17 PM, gene heskett wrote:
> On Monday, April 16, 2012 05:11:33 AM Peter did opine:
>
>> Hi Gene,
>>
>> You don't want to use an opto-isolation card with the G540 as it already
>> is opto-isolated.
>>
>> Cheers,
>> peter
>
> I may be missing something Peter, but the C1G delay is quite ignorable,
> 10ns, and its rail to rail 24 ma of drive would have to help.
>
> Cheers Peter, Gene

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Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors

[Andrew]

16 квітня 2012 р. 13:41 gene heskett  написав:

> Looks like it is but those slow rise & fall times (looks to be slew rate
> limited), coupled with the non-50% duty cycle, could be problematic.
>
> Who made that encoder?
>

Gene as far as I understand you can't measure too much with 1kHz sampling
rate (that's what we have with HAL scope)
Encoders are absolutely OK, I tested them on the other machine, and just
tested again with 7i48. But 7i48 has muxed encoders and I can't see much
with HAL scope anyways.

16 квітня 2012 р. 13:58 andy pugh  написав:

I think counter-mode only counts up, and only looks at one channel.


Yes, it just counts any pulses of A channel.

I think you might need to move the encoder more slowly, as you only
> have a 1mS sample rate available.
> It almost looks like there is no actual quadrature offset in the channels.
>

 I tried that, but no quadrature pulses appear. I'm afraid that this is
7i39 spoils the quadrature signal. Does it make sense to connect the
encoder right to 7i43 pins and look? Though it works with 7i48, who
knows... I might try that. And if the pulses are correct, it means
something wrong with 7i39 or my specific encoder cable to 7i39. But I
checked it all possible ways... And 5V on pin 6 confirms that I use the
correct pinout.
So I'm just stuck.

Andrew
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Re: [Emc-users] G540 Test Update

[Ron Ginger]

On 4/16/2012 12:04 AM, emc-users-requ...@lists.sourceforge.net wrote:
> My favorite fix so far is to recomend a buffer board on the parallel
> port. It's the only thing a user could add that would cover most every
> parallel port and the G540. A user would have a harder time fixing the
> G540 or the port. I need to find a loose buffer card around here and try
> that next. While I'm at it I'll check too see what happens with a slower
> pump.
>
>
> -- Kirk Wallace

But on the G540 that is going to lead to two optos in the line, which is 
likely to be a problem. And one of the G540s major selling features is 
that the breakout board is built-in.

Someone should get this info to Marriss. He is normally very responsive 
to problems like this, and Im sure he can either suggest a fix, or 
explain what is happening with these tests.

ron ginger

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Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors

[andy pugh]

On 16 April 2012 12:31, Andrew  wrote:

>  I tried that, but no quadrature pulses appear.

That's very odd. Have you noticed the zoom and position sliders in Halscope?

>  I'm afraid that this is
> 7i39 spoils the quadrature signal.

It works OK for me. (I have a couple of them, but only one type of encoder)

> Does it make sense to connect the encoder right to 7i43 pins and look

It is worth a try, as long as it is a 5V TTL single-ended encoder.

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Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors

[Andrew]

16 квітня 2012 р. 15:09 andy pugh  написав:

> On 16 April 2012 12:31, Andrew  wrote:
>
 > Does it make sense to connect the encoder right to 7i43 pins and look
>
> It is worth a try, as long as it is a 5V TTL single-ended encoder.
>
> Just did it. Perfect quadrature pulses
http://img214.imageshack.us/img214/6079/screenshothaloscillosco.png
And the position is correct, of course.

>  I'm afraid that this is 7i39 spoils the quadrature signal.
>
> It works OK for me. (I have a couple of them, but only one type of encoder)
>

I also have 2 of them, and all work the same. Then, it's either the cable
(I'll check it again now. No contact? Unsufficient power?) or something's
wrong with 7i39, can't imagine that.

Andrew
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Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors

[andy pugh]

16 April 2012 13:47, Andrew  wrote:

> I also have 2 of them, and all work the same. Then, it's either the cable
> (I'll check it again now. No contact? Unsufficient power?) or something's
> wrong with 7i39, can't imagine that.

I think the pins are

10 9
8 7
6 5
4 3
2 1

With pin 1 having a square pad.

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Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors

[Andrew]

16 квітня 2012 р. 15:09 andy pugh  написав:

> >  I'm afraid that this is
> > 7i39 spoils the quadrature signal.
>
> It works OK for me. (I have a couple of them, but only one type of encoder)
>
> Do you power 7i39 from 7i43 via 50 pin cable or from other sourse? Maybe
that's the point?

It seems that my 7i39 isn't compatible with this particular encoder, I
can't figure out anything else.
Just connected the encoder directly to 7i39 board connector with very same
pins it was successfully connected to 7i43. And this problem again. What
else can be wrong?


Andrew
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Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors

[andy pugh]

On 16 April 2012 14:18, Andrew  wrote:

> Just connected the encoder directly to 7i39 board connector with very same
> pins it was successfully connected to 7i43.

I am not clear what you are saying here?

Where on the 7i39 are you connecting the encoder?

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Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors

[Andrew]

16 квітня 2012 р. 16:18 andy pugh  написав:

> 16 April 2012 13:47, Andrew  wrote:
>
> > I also have 2 of them, and all work the same. Then, it's either the cable
> > (I'll check it again now. No contact? Unsufficient power?) or something's
> > wrong with 7i39, can't imagine that.
>
> I think the pins are
>
> 10 9
> 8 7
> 6 5
> 4 3
> 2 1
>
> With pin 1 having a square pad.
>
> That's what I think too. The square
And for me it's

6 - encoder 5V (and it's really 5V even with encoder connected)
7 - A (it is near 2.3V when moving the encoder, 0.6 or 4.2 when stopped -
looks like 50% duty cycle voltage)
8 - B (similar to A)
9 - Z (always 4.2V)
10 - GND (0V)

It's a mystery, then.

Andrew
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Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors

[Andrew]

16 квітня 2012 р. 16:31 andy pugh  написав:

> On 16 April 2012 14:18, Andrew  wrote:
>
> > Just connected the encoder directly to 7i39 board connector with very
> same
> > pins it was successfully connected to 7i43.
>
> I am not clear what you are saying here?
>
> Where on the 7i39 are you connecting the encoder?
>
> To small black 10pin connectors at the right side.

I mean that I exactly know where encoder pins A and B are, because I just
connected their wires to 7i43 and all worked.

Andrew
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Re: [Emc-users] Dave, Storebro260

[Dave]

OK, they must have had the Simoreg in a different configuration back 
then.   The Simoreg drive I have is a standalone unit and it has a small 
7 segement led display with a few keys to select parameters and change them.

Dave


On 4/16/2012 1:29 AM, Roger Holmquist wrote:
> 16 apr 2012 kl. 03:38 skrev emc-users-requ...@lists.sourceforge.net:
>
>
>> Is there a small keyboard on that Spindle drive with some led
>> displays?
>>
>>  
> Thanks for your response Dave!
>
> I don't think i have any such devices, there is some LED-lights but
> no displays on some cards and no visible keyboard.
> Where should it be situated, on one of the PCBs?
>
> The PCB-cards are stacked in a foldable rack interconnected with some
> flatcables, very servicefriendly.
> Included in ths rack are the thyristors for the spindle engine and
> maybe X and Z motors, I haven't checked that part up yet.
>
> Nor can I do it this week but I guess next, have some other buinesses
> to handle!
> On the other hand I have all the schematics and PCB-layouts
> available for the motor drive system.
>
> / Roger
>
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Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors

[andy pugh]

On 16 April 2012 14:34, Andrew  wrote:

> It's a mystery, then.

For fun, you could add a base thread (for extra halscope resolution)
and a software encoder counter linked to the GPIO pins (you would need
to add the 7i43 gpio read function to the base thread)

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Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors

[andy pugh]

On 16 April 2012 14:34, Andrew  wrote:

> 9 - Z (always 4.2V)

It might be that the encoder polarity is wrong. You could try
inverting the relevant 7i43 pins (I think that is possible).

-- 
atp
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Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors

[Andrew]

16 квітня 2012 р. 16:44 andy pugh  написав:

> On 16 April 2012 14:34, Andrew  wrote:
>
> > 9 - Z (always 4.2V)
>
> It might be that the encoder polarity is wrong. You could try
> inverting the relevant 7i43 pins (I think that is possible).
>

Thought about it. But for quadrature signal it does not matter much, does
it? Just would be inverse direction or something.
I guess I need the o-scope to look what's going on at 7i39 encoder
connector, not on 7i43 pins... the problem must be there. Because with
another encoder (the same model) I get some different pulse trails, with
almost-quadrature signal for one direction (wrong scale, though), but
opposite direction fails again.

In the last resort, I could connect the encoders to 7i43 pins directly. But
I would not like to cut the cable yet, it's just wrong. Maybe some other
solution comes up.

Andrew
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Re: [Emc-users] G540 Test Update

[Dave]

On 4/16/2012 7:59 AM, Ron Ginger wrote:
> On 4/16/2012 12:04 AM, emc-users-requ...@lists.sourceforge.net wrote:
>
>> My favorite fix so far is to recomend a buffer board on the parallel
>> port. It's the only thing a user could add that would cover most every
>> parallel port and the G540. A user would have a harder time fixing the
>> G540 or the port. I need to find a loose buffer card around here and try
>> that next. While I'm at it I'll check too see what happens with a slower
>> pump.
>>
>>
>> -- Kirk Wallace
>>  
> But on the G540 that is going to lead to two optos in the line, which is
> likely to be a problem. And one of the G540s major selling features is
> that the breakout board is built-in.
>
> Someone should get this info to Marriss. He is normally very responsive
> to problems like this, and Im sure he can either suggest a fix, or
> explain what is happening with these tests.
>
> ron ginger
>
>
>

I agree.  I think that Marris would be very interested in all of this.
Dan is a Geckodrive distributor, so it would probably make sense if he 
gave him a call.
Dan are you on this email list now??  (I sent him the list info.)

I called the Geckodrive support line about a month ago and talked with 
Marris for a good 20 minutes.
Geckodrive has some interesting new products on the way.

Dave


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Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors

[Peter C. Wallace]

On Mon, 16 Apr 2012, Andrew wrote:


Date: Mon, 16 Apr 2012 16:58:04 +0300
From: Andrew 
Reply-To: "Enhanced Machine Controller (EMC)"

To: "Enhanced Machine Controller (EMC)" 
Subject: Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors

16  2012 ??. 16:44 andy pugh  ??:



On 16 April 2012 14:34, Andrew  wrote:

> 9 - Z (always 4.2V)

It might be that the encoder polarity is wrong. You could try
inverting the relevant 7i43 pins (I think that is possible).




Thought about it. But for quadrature signal it does not matter much, does
it? Just would be inverse direction or something.
I guess I need the o-scope to look what's going on at 7i39 encoder
connector, not on 7i43 pins... the problem must be there. Because with
another encoder (the same model) I get some different pulse trails, with
almost-quadrature signal for one direction (wrong scale, though), but
opposite direction fails again.



In the last resort, I could connect the encoders to 7i43 pins directly. But
I would not like to cut the cable yet, it's just wrong. Maybe some other
solution comes up.



Andrew


Sure sounds like a pinout issue of some kind (the encoder input circuitry of 
the 7I39 is very simple , a ~1 Usec RC followed by a 74HCT14 Schmitt trigger)


I will check the manual later today and send you a schematic if you like.

Peter Wallace
Mesa Electronics
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[Emc-users] Has Anyone Heard From Stuart Stevenson?

[Kenneth Lerman]

Hi Stuart,

The weather reports from you neck of the woods have some of us worried.

Please let us know that all is well with you and yours.

Regards,

Ken

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Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors

[Ralph Stirling]

>> I think the pins are
>>
>> 10 9
>> 8 7
>> 6 5
>> 4 3
>> 2 1
>>
>> With pin 1 having a square pad.
>>
>> That's what I think too. The square
>And for me it's
>
>6 - encoder 5V (and it's really 5V even with encoder connected)
>7 - A (it is near 2.3V when moving the encoder, 0.6 or 4.2 when stopped -
>looks like 50% duty cycle voltage)
>8 - B (similar to A)
>9 - Z (always 4.2V)
>10 - GND (0V)

Are you looking at the top of the board or the bottom?
I believe the header should be

1 2
3 4
5 6
7 8
9 10

from the top of the board.  6 is +5, 7 is A, 8 is B, 9 is index,
and 10 is ground (as you observed).  If you have the pinout
reversed, though, then they are all connected to the wrong
pins.

I'm anxious for you to get beyond this encoder problem, because
I'm eager to learn about driving linear motors from LinuxCNC and 7I43's.
I hope to be doing that myself in a few weeks, with some small linear
motors I'm building.

-- Ralph
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Re: [Emc-users] G540 Test Update

[gene heskett]

On Monday, April 16, 2012 10:23:30 AM Peter Homann did opine:

> An BoB without opto-isolation will give you the same 24mA rail to rail
> output.
> 

You should refer to it by the URL, is this it?



That is not too bad a price either.  And I may have looked at it before, 
but because it comes from Australia, I have no clue what it would cost _me_ 
here in WV, USA.

When I first got interested in cnc, I bought some i/o cards that were being 
advertised at $39 USD, each giving 72 pins of programmable i/o from the 3 
82c55's on each card.  They were advertised as $39 USD, but when shipped 
were billed in AUD at that price.  By the time freight was added, I wound 
up paying about $90 USD each for the 3 cards I ordered. :(

Then it turned out I had to write my own driver (the claim was made that 
the driver was on the accompanying cd, it wasn't & emails were ignored), 
and eventually I actually did have it turning motors, very slowly and 
roughly due to my drivers non-access in real time.  An extreme case of 
latency.  It was about that time that I discovered 2 things, xylotex, and 
emc. I have since bought 3 of those and burned them up despite far more 
cooling than they should need, the last one, a 4 by, had a 4" fan in each 
end of a wooden box, old psu fans running on about 19 volts so they really 
did move lots of air & also made lots of noise.  Lasted about a year before 
the magic smoke came out at powerup, again.

> I just didn't see a need to pay for something that's not needed.

Neither do I Peter, so we agree on that point.
 
> But then, it's your choice. :)

Known pricing, and typically 3 day delivery by USPO was the deciding factor 
in my case.  I'm not fond of 2x surprises on C.O.D. labels, nor of 6-8 week 
delivery times.  None of that is your fault of course.

If I can't make that speed controller that I'll have in the next day or so, 
work, then one of yours is likely to be the next one tested.  Do you have a 
US based stocking distributor?  I see the one I would probably use is out 
of stock on your web page.

Cheers, Gene
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
My web page: 
He who steps on others to reach the top has good balance.

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Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors

[gene heskett]

On Monday, April 16, 2012 11:08:55 AM Andrew did opine:

> 16 ذ؛ذ²ر–ر‚ذ½رڈ 2012 ر€. 13:41 gene heskett  
ذ½ذ°ذ؟ذ¸رپذ°ذ²:
> > Looks like it is but those slow rise & fall times (looks to be slew
> > rate limited), coupled with the non-50% duty cycle, could be
> > problematic.
> > 
> > Who made that encoder?
> 
> Gene as far as I understand you can't measure too much with 1kHz
> sampling rate (that's what we have with HAL scope)

Huh?  Then why does it give you a choice of which thread to sample at?  It 
does you know. :)  When looking at those signals I used the base_thread.

Cheers, Gene
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
My web page: 
Duckies are fun!

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Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors

[gene heskett]

On Monday, April 16, 2012 11:14:57 AM Andrew did opine:

> 16 ذ؛ذ²ر–ر‚ذ½رڈ 2012 ر€. 15:09 andy pugh  
ذ½ذ°ذ؟ذ¸رپذ°ذ²:
> > On 16 April 2012 12:31, Andrew  wrote:
>  > Does it make sense to connect the encoder right to 7i43 pins and look
> > 
> > It is worth a try, as long as it is a 5V TTL single-ended encoder.
> > 
> > Just did it. Perfect quadrature pulses
> 
> http://img214.imageshack.us/img214/6079/screenshothaloscillosco.png
> And the position is correct, of course.
 
That is much better.  But are you turning the spindle by hand?  That is 
still a very uneven speed, showing at least 6/1 diffs in speed in just a 
fraction of a revolution.

Cheers, Gene
-- 
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 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
My web page: 
Those aren't WINOS -- that's my JUGGLER, my AERIALIST, my SWORD
SWALLOWER, and my LATEX NOVELTY SUPPLIER!!

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Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors

[andy pugh]

2012/4/16 gene heskett :

> Huh?  Then why does it give you a choice of which thread to sample at?  It
> does you know. :)  When looking at those signals I used the base_thread.

There is typically no base thread on a 7i43 system, and even if you
create one, the Hostmot2 read/.write isn't on it.
You can add Hostmot2 GPIO-only access to the base thread, but I am not
sure anyone ever does.

-- 
atp
The idea that there is no such thing as objective truth is, quite simply, wrong.

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Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors

[gene heskett]

On Monday, April 16, 2012 11:31:42 AM andy pugh did opine:

> 2012/4/16 gene heskett :
> > Huh?  Then why does it give you a choice of which thread to sample at?
> >  It does you know. :)  When looking at those signals I used the
> > base_thread.
> 
> There is typically no base thread on a 7i43 system, and even if you
> create one, the Hostmot2 read/.write isn't on it.
> You can add Hostmot2 GPIO-only access to the base thread, but I am not
> sure anyone ever does.

Ahh, that explains that then, its running in some sort of a servo mode.  

Thanks for the clarification Andy.

Cheers, Gene
-- 
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 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
My web page: 
Only God can make random selections.

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Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors

[Andrew]

16 квітня 2012 р. 17:45 Ralph Stirling написав:

> Are you looking at the top of the board or the bottom?
> I believe the header should be
>
> 1 2
> 3 4
> 5 6
> 7 8
> 9 10
>
> from the top of the board.  6 is +5, 7 is A, 8 is B, 9 is index,
> and 10 is ground (as you observed).  If you have the pinout
> reversed, though, then they are all connected to the wrong
> pins.
>

I look from the top, like shown in manual. And pin 1 it's in the right
bottom corner.
I have different voltage at pin groups exactly according the manual. And I
have 5V at left middle pin.
By the way what is SENSEA and SENSEB inputs?


>
> I'm anxious for you to get beyond this encoder problem, because
> I'm eager to learn about driving linear motors from LinuxCNC and 7I43's.
>

That's not a big deal, I guess. At least I know that Andy and Viesturs had
their encoders working. Maybe it's really a pinout, but I'm 99% sure it's
not. Maybe just some incompatibility, though it's hard to believe too... RC
+ Shmitt can't break the signal too much. If I do not find a solution, I
connect the encoder directly to 7i43

I hope to be doing that myself in a few weeks, with some small linear
> motors I'm building.
>

I should say I was surprised how simple are these motors. Just a rod with
magnets inside, and several coils in the forcer. And this motor with
20x250mm rod and 40x40x90mm lenght forcer they sell for $500 or smth.
Now I think about making them myself. So any details on this would be
useful. Any links for your motors.

Andrew
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Re: [Emc-users] G540 Test Update

[Peter Homann]

Hi Gene,

I wasn't pushing you to buy my breakout board. I'd assume you would have 
bought a C10 from CNC4PC. It's a plain signal buffered board. Not as good as 
mine of course. :)

As to the DC-03, I had a bit of a rush last week, so am putting another run 
through the pick and place machine this week.

As to shipping overseas tell me about it.

I used to ship by airmail, costing about $16.00 - $17.00 to the USA. Then I 
had a few rip me off claiming to Paypal that they didn't receive it.

The final straw was when a guy purchased something then after 12 days (parcels 
take 10-14 days to get to the USA) a got notification of a Paypal dispute.

I emailed him, both directly and through Paypal 7 or 8 times over  the 4 week 
claim period to try and confirm the delivery address, etc. He never responded 
to any email. So Paypal refunded the money as I couldn't prove it was sent and 
there was no tracking number.

So I updated the order in my database which automatically sends a copy to him. 
Within 30 seconds I got a response from him as he didn't like how I updated my 
database.

==
That's really professional. I didn't receive my merchandise. You failed to 
uphold your end of the transaction by failing to provide an online method for 
tracking the delivery of the purchase. Check the PayPal user agreement...



On Oct 9, 2010, at 5:53 PM, "homanndesigns.com"  wrote:

 > Dear xxx xx,
 >
 > Here is an update on your order #8416.
 >
 > -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
 >
 > Detailed Invoice:
 > 
http://homanndesigns.com/store/index.php?main_page=account_history_info&order_id=8416
 > Date Ordered: Friday 20 August, 2010
 >
 > Comments concerning your order:
 >
 > The customer scammed the order by using the Paypal dispute system.
 >
 > Do not accept orders from this customer.
 >
 > -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
 >
 > If you have any questions, please contact our customer service department at
 > serv...@yourstore.com.
 >
 > Sincerely,
 >
 > homanndesigns.com
 >
 > -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-



The thing that these Bozos don't understand is that after you've processed the 
first thousand orders, a scammer like this stands out like a beacon.

So now I only send by registered airmail or Express Post International as they 
are trackable but this adds to the cost.

And now there is a $9.00 surcharge levied as the USA requires every parcel 
over 1Kg to be X-rayed. Someone is making some serious money from this junket.

So in the end, my international sales suffer as the price too the door is 
uncompetitive. A DC-03 DigiSpeed is $38.00 and costs about $25.00 to ship to 
the USA, so it's hard to compete in the Global market place. :)

1:40am time for sleeep.

Cheers,

Peter






On 17/04/2012 1:07 AM, gene heskett wrote:
> On Monday, April 16, 2012 10:23:30 AM Peter Homann did opine:
>
>> An BoB without opto-isolation will give you the same 24mA rail to rail
>> output.
>>
>
> You should refer to it by the URL, is this it?
>
> 
>
> That is not too bad a price either.  And I may have looked at it before,
> but because it comes from Australia, I have no clue what it would cost _me_
> here in WV, USA.
>
> When I first got interested in cnc, I bought some i/o cards that were being
> advertised at $39 USD, each giving 72 pins of programmable i/o from the 3
> 82c55's on each card.  They were advertised as $39 USD, but when shipped
> were billed in AUD at that price.  By the time freight was added, I wound
> up paying about $90 USD each for the 3 cards I ordered. :(
>
> Then it turned out I had to write my own driver (the claim was made that
> the driver was on the accompanying cd, it wasn't&  emails were ignored),
> and eventually I actually did have it turning motors, very slowly and
> roughly due to my drivers non-access in real time.  An extreme case of
> latency.  It was about that time that I discovered 2 things, xylotex, and
> emc. I have since bought 3 of those and burned them up despite far more
> cooling than they should need, the last one, a 4 by, had a 4" fan in each
> end of a wooden box, old psu fans running on about 19 volts so they really
> did move lots of air&  also made lots of noise.  Lasted about a year before
> the magic smoke came out at powerup, again.
>
>> I just didn't see a need to pay for something that's not needed.
>
> Neither do I Peter, so we agree on that point.
>
>> But then, it's your choice. :)
>
> Known pricing, and typically 3 day delivery by USPO was the deciding factor
> in my case.  I'm not fond of 2x surprises on C.O.D. labels, nor of 6-8 week
> delivery times.  None of that is your fault of course.
>
> If I ca

Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors

[Viesturs Lācis]

2012/4/16 Andrew :
>
> I look from the top, like shown in manual. And pin 1 it's in the right
> bottom corner.
> I have different voltage at pin groups exactly according the manual. And I
> have 5V at left middle pin.
> By the way what is SENSEA and SENSEB inputs?

They are not used by 7i39, they are routed just right to the 50 pin
connector and are available on Your gpio pin. Basically You can put
some limit switch or something else there.
IIRC Peter had an idea for some potential use in future, so they
already gave the name for that, but I can be very wrong on this.
Anyway, sense pins are not used by 7i39 at the moment. I have a
adjusted firmware, where there are stepgen outputs on these 2 lines.
And it is working :)

Viesturs



>
>>
>> I'm anxious for you to get beyond this encoder problem, because
>> I'm eager to learn about driving linear motors from LinuxCNC and 7I43's.
>>
>
> That's not a big deal, I guess. At least I know that Andy and Viesturs had
> their encoders working. Maybe it's really a pinout, but I'm 99% sure it's
> not. Maybe just some incompatibility, though it's hard to believe too... RC
> + Shmitt can't break the signal too much. If I do not find a solution, I
> connect the encoder directly to 7i43
>
> I hope to be doing that myself in a few weeks, with some small linear
>> motors I'm building.
>>
>
> I should say I was surprised how simple are these motors. Just a rod with
> magnets inside, and several coils in the forcer. And this motor with
> 20x250mm rod and 40x40x90mm lenght forcer they sell for $500 or smth.
> Now I think about making them myself. So any details on this would be
> useful. Any links for your motors.
>
> Andrew
> --
> For Developers, A Lot Can Happen In A Second.
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Re: [Emc-users] G540 Test Update

[gene heskett]

On Monday, April 16, 2012 11:52:54 AM Peter Homann did opine:

> Hi Gene,
> 
> I wasn't pushing you to buy my breakout board. I'd assume you would have
> bought a C10 from CNC4PC. It's a plain signal buffered board. Not as
> good as mine of course. :)

Naturally.  ;-)

> As to the DC-03, I had a bit of a rush last week, so am putting another
> run through the pick and place machine this week.

Probably the DC05 combo, as it will be driving the board in a 7x12.
> 
> As to shipping overseas tell me about it.
> 
> I used to ship by airmail, costing about $16.00 - $17.00 to the USA.
> Then I had a few rip me off claiming to Paypal that they didn't receive
> it.
> 
> The final straw was when a guy purchased something then after 12 days
> (parcels take 10-14 days to get to the USA) a got notification of a
> Paypal dispute.
> 
> I emailed him, both directly and through Paypal 7 or 8 times over  the 4
> week claim period to try and confirm the delivery address, etc. He
> never responded to any email. So Paypal refunded the money as I
> couldn't prove it was sent and there was no tracking number.
> 
> So I updated the order in my database which automatically sends a copy
> to him. Within 30 seconds I got a response from him as he didn't like
> how I updated my database.

Chuckle.  I think you were being kind considering.

> 
> == That's really professional. I didn't receive my merchandise.
> You failed to uphold your end of the transaction by failing to provide
> an online method for tracking the delivery of the purchase. Check the
> PayPal user agreement...
> 
And just how does one go about tracking an order that is going half way 
around this ball of wet rock?  The Chinese try, but there is still a huge 
area of limbo that usually involves their choice of ocean going shippers.
So when I bought what I hope is a better set of drivers, I bought through 
fleabay where I might stand a small chance of fixing a bad vendor. 
> 
> On Oct 9, 2010, at 5:53 PM, "homanndesigns.com"  
> homanndesigns.com  Change at to @> wrote:
>  > Dear xxx xx,
>  > 
>  > Here is an update on your order #8416.
>  > 
>  > -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
>  > =-
> 
>  > Detailed Invoice:
> http://homanndesigns.com/store/index.php?main_page=account_history_info&;
> order_id=8416
> 
>  > Date Ordered: Friday 20 August, 2010
>  > 
>  > Comments concerning your order:
>  > 
>  > The customer scammed the order by using the Paypal dispute system.
>  > 
>  > Do not accept orders from this customer.
>  > 
>  > -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
>  > =-
>  > 
>  > If you have any questions, please contact our customer service
>  > department at serv...@yourstore.com.
>  > 
>  > Sincerely,
>  > 
>  > homanndesigns.com
>  > 
>  > -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
>  > =-
> 
> 
> 
> 
> 
> The thing that these Bozos don't understand is that after you've
> processed the first thousand orders, a scammer like this stands out
> like a beacon.
> 
Absolutely.

> So now I only send by registered airmail or Express Post International
> as they are trackable but this adds to the cost.
> 
> And now there is a $9.00 surcharge levied as the USA requires every
> parcel over 1Kg to be X-rayed. Someone is making some serious money
> from this junket.

Which can be done on a conveyor belt for $0.05 a package.  They do it to 
your pocket contents at the airport, using the economy of mass inspection.

And is not, IMO, enhancing either country's safety.  What they are really 
doing I suspect is looking for bricks of dope.  IMO it should be legalized, 
but subject to a $50k bounty paid for every pusher blown away caught 
selling your 14 year old a 'starter' sample.  We'd lose that sales channel 
right away, and at far less cost.  All this 'interdiction' does is put law 
enforcement into the drug dealing business on the side.  I know of one 
instance 30 years ago in Northern CA, where they cuffed 4 guys & collected 
734 lbs of coke they had just cooked up, the DEA set bail so they'd run 
like hell, & when they grabbed the 2 locals again at a drunk check 2 years 
later, they had to let them go because the evidence room was empty.  Draw 
your own conclusions as to where it went.  Right out on the streets like a 
bad case of diarrhea.  Some was used 'internally' of course.
 
> So in the end, my international sales suffer as the price too the door
> is uncompetitive. A DC-03 DigiSpeed is $38.00 and costs about $25.00 to
> ship to the USA, so it's hard to compete in the Global market place. :)
> 
> 1:40am time for sleeep.

Sleep well Peter.

Cheers, Gene
-- 
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 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
My web page: 

Re: [Emc-users] G540 Test Update

[Kirk Wallace]

On Tue, 2012-04-17 at 01:41 +1000, Peter Homann wrote:
> Hi Gene,
> 
> I wasn't pushing you to buy my breakout board. I'd assume you would have 
> bought a C10 from CNC4PC. It's a plain signal buffered board. Not as good as 
> mine of course. :)

I'm thinking the C26:
http://www.cnc4pc.com/Store/osc/product_info.php?cPath=33&products_id=203 

would be a closer match. It appears that the G540 was supposed to be an
all in one type of thing, so the buffer should only add what is needed.
I'm thinking a DSub, minimal board with SMT buffers, setup for output
only, fits in a backshell, with an external power input terminal. It
should be cheap enough that if it gets damaged, one tosses it and buys
another. Maybe make it a kit or board only.

-- 
Kirk Wallace
http://www.wallacecompany.com/machine_shop/
http://www.wallacecompany.com/E45/index.html
California, USA


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Re: [Emc-users] G540 Test Update

[Dave]

Peter,

How do the Chinese get stuff into the US so efficiently?
If you look at Ebay they are selling things in the US for less than $10 
and offering free delivery!
I ordered some cables once - about $100 worth - and the guy shipped them 
express mail from China for about $20.  This was probably two years ago 
or so.  I had the cables 2 or 3 days later.There is no way I could 
ship the same package to China for $20.

Ironically, I was considering buying a mill from Canada - probably 2000 
lbs or so (I'm about 100 miles from Canada) but the red tape that was 
required to get it across the border was severe - and the US customs 
people would not give me a straight answer even when I called them on 
the phone several times.   It was really bad.  So I abandoned the 
purchase.   So much for free trade between the US and Canada.

Apparently, we would prefer to trade with China!  :-/

Dave



On 4/16/2012 11:41 AM, Peter Homann wrote:
> Hi Gene,
>
> I wasn't pushing you to buy my breakout board. I'd assume you would have
> bought a C10 from CNC4PC. It's a plain signal buffered board. Not as good as
> mine of course. :)
>
> As to the DC-03, I had a bit of a rush last week, so am putting another run
> through the pick and place machine this week.
>
> As to shipping overseas tell me about it.
>
> I used to ship by airmail, costing about $16.00 - $17.00 to the USA. Then I
> had a few rip me off claiming to Paypal that they didn't receive it.
>
> The final straw was when a guy purchased something then after 12 days (parcels
> take 10-14 days to get to the USA) a got notification of a Paypal dispute.
>
> I emailed him, both directly and through Paypal 7 or 8 times over  the 4 week
> claim period to try and confirm the delivery address, etc. He never responded
> to any email. So Paypal refunded the money as I couldn't prove it was sent and
> there was no tracking number.
>
> So I updated the order in my database which automatically sends a copy to him.
> Within 30 seconds I got a response from him as he didn't like how I updated my
> database.
>
> ==
> That's really professional. I didn't receive my merchandise. You failed to
> uphold your end of the transaction by failing to provide an online method for
> tracking the delivery of the purchase. Check the PayPal user agreement...
>
>
>
> On Oct 9, 2010, at 5:53 PM, "homanndesigns.com" homanndesigns.com  Change at to @>  wrote:
>
>   >  Dear xxx xx,
>   >
>   >  Here is an update on your order #8416.
>   >
>   >  -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
>   >
>   >  Detailed Invoice:
>   >
> http://homanndesigns.com/store/index.php?main_page=account_history_info&order_id=8416
>   >  Date Ordered: Friday 20 August, 2010
>   >
>   >  Comments concerning your order:
>   >
>   >  The customer scammed the order by using the Paypal dispute system.
>   >
>   >  Do not accept orders from this customer.
>   >
>   >  -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
>   >
>   >  If you have any questions, please contact our customer service 
> department at
>   >  serv...@yourstore.com.
>   >
>   >  Sincerely,
>   >
>   >  homanndesigns.com
>   >
>   >  -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
> 
>
>
> The thing that these Bozos don't understand is that after you've processed the
> first thousand orders, a scammer like this stands out like a beacon.
>
> So now I only send by registered airmail or Express Post International as they
> are trackable but this adds to the cost.
>
> And now there is a $9.00 surcharge levied as the USA requires every parcel
> over 1Kg to be X-rayed. Someone is making some serious money from this junket.
>
> So in the end, my international sales suffer as the price too the door is
> uncompetitive. A DC-03 DigiSpeed is $38.00 and costs about $25.00 to ship to
> the USA, so it's hard to compete in the Global market place. :)
>
> 1:40am time for sleeep.
>
> Cheers,
>
> Peter
>
>
>
>
>
>
> On 17/04/2012 1:07 AM, gene heskett wrote:
>
>> On Monday, April 16, 2012 10:23:30 AM Peter Homann did opine:
>>
>>  
>>> An BoB without opto-isolation will give you the same 24mA rail to rail
>>> output.
>>>
>>>
>> You should refer to it by the URL, is this it?
>>
>> 
>>
>> That is not too bad a price either.  And I may have looked at it before,
>> but because it comes from Australia, I have no clue what it would cost _me_
>> here in WV, USA.
>>
>> When I first got interested in cnc, I bought some i/o cards that were being
>> advertised at $39 USD, each giving 72 pins of programmable i/o from the 3
>> 82c55's on each card.  They were advertised as $39 USD, but when shipped
>> were billed in AUD at that price.  By t

Re: [Emc-users] C Compiler - MPLAB

[Cathrine Hribar]

Hi  Erik:

well i downloaded MPLAB X from microchip.

Tried to run the install program but the Ubuntu system says that I don't have 
the software installed needed to run the MPLAB X install file.

Any suggestions of what I need to get and where to get it?

Thanks:

Bill

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Re: [Emc-users] Has Anyone Heard From Stuart Stevenson?

[Stuart Stevenson]

No damage here. It seems as if the wind and rain went around us on both
sides. There was some water in the parking lot that floated a few 55 gal.
drums to the fence but both building sit high enough there was no water
inside. Did not even lose electric power.

On Mon, Apr 16, 2012 at 9:45 AM, Kenneth Lerman
wrote:

>
> Hi Stuart,
>
> The weather reports from you neck of the woods have some of us worried.
>
> Please let us know that all is well with you and yours.
>
> Regards,
>
> Ken
>
>
> --
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Re: [Emc-users] G540 Test Update

[Dave]

On 4/16/2012 12:21 PM, Kirk Wallace wrote:
> On Tue, 2012-04-17 at 01:41 +1000, Peter Homann wrote:
>
>> Hi Gene,
>>
>> I wasn't pushing you to buy my breakout board. I'd assume you would have
>> bought a C10 from CNC4PC. It's a plain signal buffered board. Not as good as
>> mine of course. :)
>>  
> I'm thinking the C26:
> http://www.cnc4pc.com/Store/osc/product_info.php?cPath=33&products_id=203
>
> would be a closer match. It appears that the G540 was supposed to be an
> all in one type of thing, so the buffer should only add what is needed.
> I'm thinking a DSub, minimal board with SMT buffers, setup for output
> only, fits in a backshell, with an external power input terminal. It
> should be cheap enough that if it gets damaged, one tosses it and buys
> another. Maybe make it a kit or board only.
>
>

Perhaps Marris should consider adding this to the G540 and doing a USB 
port power steal to drive the electronics?

Dave

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Re: [Emc-users] G540 Test Update

[Eric Keller]

On Mon, Apr 16, 2012 at 12:23 PM, Dave  wrote:

> Peter,
>
> How do the Chinese get stuff into the US so efficiently?
>
My conclusion is that it is heavily subsidized.  There certainly is an
economy of scale, but I find it hard to believe that explains everything.
I was just joking with someone earlier that we should send stuff to Europe
through China.
Eric
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Re: [Emc-users] G540 Test Update

[andy pugh]

On 16 April 2012 17:58, Dave  wrote:

> Perhaps Marris should consider adding this to the G540 and doing a USB
> port power steal to drive the electronics?

Why not use some of the stepper motor power supply?
(probably isolated and re-referenced to p-port GND using a DC/DC converter)

-- 
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The idea that there is no such thing as objective truth is, quite simply, wrong.

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Re: [Emc-users] G540 Test Update

[Dave]

On 4/16/2012 1:05 PM, andy pugh wrote:
> On 16 April 2012 17:58, Dave  wrote:
>
>
>> Perhaps Marris should consider adding this to the G540 and doing a USB
>> port power steal to drive the electronics?
>>  
> Why not use some of the stepper motor power supply?
> (probably isolated and re-referenced to p-port GND using a DC/DC converter)
>
>

Expense.A USB cable is cheap and that eliminates the DC-DC converter 
cost since the power is coming from the proper side of the optos.

Dave

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Re: [Emc-users] C Compiler - MPLAB

[Erik Friesen]

http://embeddedfun.blogspot.com/2011/05/installing-mplabx-on-ubuntu-1104.html

http://microchip.wikidot.com/mplab:install-on-linux-bin

On Mon, Apr 16, 2012 at 12:42 PM, Cathrine Hribar wrote:

>
>
>
> Hi  Erik:
>
> well i downloaded MPLAB X from microchip.
>
> Tried to run the install program but the Ubuntu system says that I don't
> have
> the software installed needed to run the MPLAB X install file.
>
> Any suggestions of what I need to get and where to get it?
>
> Thanks:
>
> Bill
>
>
> --
> For Developers, A Lot Can Happen In A Second.
> Boundary is the first to Know...and Tell You.
> Monitor Your Applications in Ultra-Fine Resolution. Try it FREE!
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Re: [Emc-users] G540 Test Update

[Stephen Dubovsky]

> Expense.A USB cable is cheap and that eliminates the DC-DC converter
> cost since the power is coming from the proper side of the optos.
>
>
But w/ cheap comes low reliability?  The USB can be power up/down by the
host.  A USB fault will turn the power off.  I don't know if a fault on
another channel turns them all off or not.  Would be bad if you plugged a
bad usb key in and crashed the running machine.  I know w/ my phone plugged
into my work machine to charge (admittedly win7), the charging restarts
once in a while.  Not sure if its the phone (android) or something going on
w/ the usb port.

Little dc/dc converters or wall-warts power supplies are cheap too;)
Probably better just to grab 5V directly off the PCs power supply than to
use USB.  Wire up a cable to plug into a spare floppy/CDR power connector.

SMD
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[Emc-users] machine shop advice

[Erik Friesen]

Has anyone here use e-machine shop, or anything like it?  I am needing to
outsource some cnc work, but not sure where to go.  One of the guys on this
project had mentioned www.mfg.com, but I am pretty leery of it.  It is all
plastic machining, pvc sheet.  Here
is one of three, dimensions
are 4" x 2.35"
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Re: [Emc-users] G540 Test Update

[Jon Elson]

gene heskett wrote:
> On Monday, April 16, 2012 12:05:22 AM Jon Elson did opine:
>
>   
>> It was described earlier that the charge pump input to the G540 is
>> capacitively
>> coupled, and apparently has a large coupling cap.  If it is driving the
>> base of a
>> BJT with the cap, that would require a pretty big one.
>>
>> Jon
>> 
>  
> Gee Jon, its been yonks, as in 2+ decades since I last played with a BJT.  
> Do I properly recall that the triggering voltage is more than a normal NPN 
> transistor would have?
>   
BJT is shorthand for Bipolar Junction Transistor, and they can be either 
PNP or NPN.
Many decades ago there were unijuction transistors, you can't get those 
anymore.
Perhaps that is what you were thinking of.  But, I was thinking of a 
generic PNP or NPN
transistor, but the person who described the circuit a few days ago did 
not say
whether it was junction transistor or a FET.

Jon

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Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors

[Peter C. Wallace]

Looked at the 7I39 manual and schematics (and our 7I39 test cabling)
and dont see any errors there.

freeby/mesanet.com/7i39icon.pdf
freeby/mesanet.com/7i39quad.pdf

are the input connector and quadrature input sections of the 7I39 if you want 
to trace the signals.

Peter Wallace
Mesa Electronics

(\__/)
(='.'=) This is Bunny. Copy and paste bunny into your
(")_(") signature to help him gain world domination.


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Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors

[Peter C. Wallace]

sorry thats:

freeby.mesanet.com/7i39icon.pdf
freeby.mesanet.com/7i39quad.pdf

Peter Wallace
Mesa Electronics

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Re: [Emc-users] G540 Test Update

[Dave]

On 4/16/2012 1:30 PM, Stephen Dubovsky wrote:
>> Expense.A USB cable is cheap and that eliminates the DC-DC converter
>> cost since the power is coming from the proper side of the optos.
>>
>>
>>  
> But w/ cheap comes low reliability?  The USB can be power up/down by the
> host.  A USB fault will turn the power off.  I don't know if a fault on
> another channel turns them all off or not.  Would be bad if you plugged a
> bad usb key in and crashed the running machine.  I know w/ my phone plugged
> into my work machine to charge (admittedly win7), the charging restarts
> once in a while.  Not sure if its the phone (android) or something going on
> w/ the usb port.
>
> Little dc/dc converters or wall-warts power supplies are cheap too;)
> Probably better just to grab 5V directly off the PCs power supply than to
> use USB.  Wire up a cable to plug into a spare floppy/CDR power connector.
>
> SMD
>

>>But w/ cheap comes low reliability?

If you believe that to be true, what are you doing using LinuxCNC?  ;-)

You should not put a USB stick into a running machine.   Bad things may 
happen.  Both Windows (definitely) and Linux (sometimes) has a problem 
with USB insertions and removals.

Sometimes simple is the best solution.

>>Wire up a cable to plug into a spare floppy/CDR power connector.
You are assuming the customer is qualified to open the PC case...  :-)

The G540 is a very low cost product.  Marris is going to do some serious nail 
biting before he adds any cost to his product.

Dave


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Re: [Emc-users] machine shop advice

[James Louis]

Erik,

A few years ago I used e-machine shop.  Their CAD software, which you must 
download and install, was very basic.  It worked well and the CNC machining was 
reasonably priced.  The whole process is transparent down to your cost and ship 
date before you even purchase your part(s).  You can back out with nothing lost 
but your CAD time.
I was very happy with the tolerances held too.

http://www.emachineshop.com

Jim

-Original Message-
From: Erik Friesen [mailto:e...@aercon.net]
Sent: Monday, April 16, 2012 12:36 PM
To: Enhanced Machine Controller (EMC)
Subject: [Emc-users] machine shop advice

Has anyone here use e-machine shop, or anything like it?  I am needing to
outsource some cnc work, but not sure where to go.  One of the guys on this
project had mentioned www.mfg.com, but I am pretty leery of it.  It is all
plastic machining, pvc sheet.  Here
is one of three, dimensions
are 4" x 2.35"
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contain information that is privileged and confidential. If you are not the 
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or use hereof is prohibited. If you have received this communication in error, 
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Re: [Emc-users] C Compiler - MPLAB

[Dave]

Where is a good website that describes the software and hardware tool 
chain required to develop and program Pic controllers?

I've looked at the Willem programmers available on Ebay but I have no 
idea if those are compatible with the newest software development tools 
or not?

Dave

On 4/16/2012 1:15 PM, Erik Friesen wrote:
> http://embeddedfun.blogspot.com/2011/05/installing-mplabx-on-ubuntu-1104.html
>
> http://microchip.wikidot.com/mplab:install-on-linux-bin
>
> On Mon, Apr 16, 2012 at 12:42 PM, Cathrine Hribarwrote:
>
>
>>
>>
>> Hi  Erik:
>>
>> well i downloaded MPLAB X from microchip.
>>
>> Tried to run the install program but the Ubuntu system says that I don't
>> have
>> the software installed needed to run the MPLAB X install file.
>>
>> Any suggestions of what I need to get and where to get it?
>>
>> Thanks:
>>
>> Bill
>>
>>
>> --
>> For Developers, A Lot Can Happen In A Second.
>> Boundary is the first to Know...and Tell You.
>> Monitor Your Applications in Ultra-Fine Resolution. Try it FREE!
>> http://p.sf.net/sfu/Boundary-d2dvs2
>> ___
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>> https://lists.sourceforge.net/lists/listinfo/emc-users
>>
>>  
> --
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>
>


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Re: [Emc-users] machine shop advice

[Dave]

On 4/16/2012 1:35 PM, Erik Friesen wrote:
> Has anyone here use e-machine shop, or anything like it?  I am needing to
> outsource some cnc work, but not sure where to go.  One of the guys on this
> project had mentioned www.mfg.com, but I am pretty leery of it.  It is all
> plastic machining, pvc sheet.  Here
> is one of three, dimensions
> are 4" x 2.35"
> --
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>
>

How many do you need?

Dave

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Re: [Emc-users] machine shop advice

[Erik Friesen]

Around 50 pieces each.

On Mon, Apr 16, 2012 at 2:34 PM, Dave  wrote:

> On 4/16/2012 1:35 PM, Erik Friesen wrote:
> > Has anyone here use e-machine shop, or anything like it?  I am needing to
> > outsource some cnc work, but not sure where to go.  One of the guys on
> this
> > project had mentioned www.mfg.com, but I am pretty leery of it.  It is
> all
> > plastic machining, pvc sheet.  Here
> > is one of three, dimensions
> > are 4" x 2.35"
> >
> --
> > For Developers, A Lot Can Happen In A Second.
> > Boundary is the first to Know...and Tell You.
> > Monitor Your Applications in Ultra-Fine Resolution. Try it FREE!
> > http://p.sf.net/sfu/Boundary-d2dvs2
> > ___
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> > Emc-users@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/emc-users
> >
> >
>
> How many do you need?
>
> Dave
>
>
> --
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Re: [Emc-users] G540 Test Update

[Kirk Wallace]

On Mon, 2012-04-16 at 12:16 -0500, Jon Elson wrote:
... snip
> But, I was thinking of a generic PNP or NPN transistor, but the person
> who described the circuit a few days ago did not say whether it was
> junction transistor or a FET.
> 
> Jon

Most of the components on the G540 are SMT and too small to have
markings, so I could only guess about what they are. I have some close
up pictures of the area in question, but my camera's cable has woken up
and run off somewhere. I'll post the pictures when I get this sorted
out.

On the other hand I'm thinking I'll need to deal with the G540 as it is.

I'm still concerned that the G540's 10x microstepping would put it out
of the parallel port arena. It seems a 5i25 would be more appropriate,
plus taking into account other savings the 5i25 might provide, might
make it cost similar to a PCI parallel port and buffer board. Trying a
Pluto-P is on my to-do list.

-- 
Kirk Wallace
http://www.wallacecompany.com/machine_shop/
http://www.wallacecompany.com/E45/index.html
California, USA


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Re: [Emc-users] machine shop advice

[John Thornton]

I can't see much on the pdf, do you have a cad drawing or 3d model of 
the part?

John Thornton

On 4/16/2012 1:42 PM, Erik Friesen wrote:
> Around 50 pieces each.
>
> On Mon, Apr 16, 2012 at 2:34 PM, Dave  wrote:
>
>> On 4/16/2012 1:35 PM, Erik Friesen wrote:
>>> Has anyone here use e-machine shop, or anything like it?  I am needing to
>>> outsource some cnc work, but not sure where to go.  One of the guys on
>> this
>>> project had mentioned www.mfg.com, but I am pretty leery of it.  It is
>> all
>>> plastic machining, pvc sheet.  Here
>>> is one of three, dimensions
>>> are 4" x 2.35"
>>>
>> --
>>> For Developers, A Lot Can Happen In A Second.
>>> Boundary is the first to Know...and Tell You.
>>> Monitor Your Applications in Ultra-Fine Resolution. Try it FREE!
>>> http://p.sf.net/sfu/Boundary-d2dvs2
>>> ___
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>>> Emc-users@lists.sourceforge.net
>>> https://lists.sourceforge.net/lists/listinfo/emc-users
>>>
>>>
>> How many do you need?
>>
>> Dave
>>
>>
>> --
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>> Boundary is the first to Know...and Tell You.
>> Monitor Your Applications in Ultra-Fine Resolution. Try it FREE!
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>>
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Re: [Emc-users] C Compiler - MPLAB

[Erik Friesen]

My advice is to buy microchip tools.  They are very little more, and you
get support.  MplabX is finicky enough, I wouldn't try other tools at this
point.

I don't know any website right off.  I think you are best off buying a
starter kit like the pickit3 debug express.  The initial learning curve can
be frustrating unless you have outside help, or prior experience.

On Mon, Apr 16, 2012 at 2:33 PM, Dave  wrote:

> Where is a good website that describes the software and hardware tool
> chain required to develop and program Pic controllers?
>
> I've looked at the Willem programmers available on Ebay but I have no
> idea if those are compatible with the newest software development tools
> or not?
>
> Dave
>
> On 4/16/2012 1:15 PM, Erik Friesen wrote:
> >
> http://embeddedfun.blogspot.com/2011/05/installing-mplabx-on-ubuntu-1104.html
> >
> > http://microchip.wikidot.com/mplab:install-on-linux-bin
> >
> > On Mon, Apr 16, 2012 at 12:42 PM, Cathrine Hribar >wrote:
> >
> >
> >>
> >>
> >> Hi  Erik:
> >>
> >> well i downloaded MPLAB X from microchip.
> >>
> >> Tried to run the install program but the Ubuntu system says that I don't
> >> have
> >> the software installed needed to run the MPLAB X install file.
> >>
> >> Any suggestions of what I need to get and where to get it?
> >>
> >> Thanks:
> >>
> >> Bill
> >>
> >>
> >>
> --
> >> For Developers, A Lot Can Happen In A Second.
> >> Boundary is the first to Know...and Tell You.
> >> Monitor Your Applications in Ultra-Fine Resolution. Try it FREE!
> >> http://p.sf.net/sfu/Boundary-d2dvs2
> >> ___
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> >> Emc-users@lists.sourceforge.net
> >> https://lists.sourceforge.net/lists/listinfo/emc-users
> >>
> >>
> >
> --
> > For Developers, A Lot Can Happen In A Second.
> > Boundary is the first to Know...and Tell You.
> > Monitor Your Applications in Ultra-Fine Resolution. Try it FREE!
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> > https://lists.sourceforge.net/lists/listinfo/emc-users
> >
> >
>
>
>
> --
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Re: [Emc-users] C Compiler - MPLAB

[Kirk Wallace]

On Mon, 2012-04-16 at 14:33 -0400, Dave wrote:
> Where is a good website that describes the software and hardware tool 
> chain required to develop and program Pic controllers?
> 
> I've looked at the Willem programmers available on Ebay but I have no 
> idea if those are compatible with the newest software development tools 
> or not?
> 
> Dave

I don't mean to offend anybody, but AVR's are cheap and fall down easy
to get started with. Why bother with PIC's? The only reason I can think
of, is to fill time with the challenge at hand.

-- 
Kirk Wallace
http://www.wallacecompany.com/machine_shop/
http://www.wallacecompany.com/E45/index.html
California, USA


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Re: [Emc-users] G540 Test Update

[andy pugh]

On 16 April 2012 19:43, Kirk Wallace  wrote:

> I'm still concerned that the G540's 10x microstepping would put it out
> of the parallel port arena. It seems a 5i25 would be more appropriate,
> plus taking into account other savings the 5i25 might provide, might
> make it cost similar to a PCI parallel port and buffer board.

There is a firmware for the 5i25 that connects pin-to-pin with a G540,
and then you still have 25 more pins that can do almost anything,
including adding a few hundred more IO drivers via SmarSerial.

>  Trying a Pluto-P is on my to-do list.

But you clearly relish a frustrating challenge….

-- 
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Re: [Emc-users] machine shop advice

[Erik Friesen]

The 3d pdf's created by alibre are a little flaky.

DXF 
PDF 
Alibre 


On Mon, Apr 16, 2012 at 2:47 PM, John Thornton  wrote:

> I can't see much on the pdf, do you have a cad drawing or 3d model of
> the part?
>
> John Thornton
>
> On 4/16/2012 1:42 PM, Erik Friesen wrote:
> > Around 50 pieces each.
> >
> > On Mon, Apr 16, 2012 at 2:34 PM, Dave  wrote:
> >
> >> On 4/16/2012 1:35 PM, Erik Friesen wrote:
> >>> Has anyone here use e-machine shop, or anything like it?  I am needing
> to
> >>> outsource some cnc work, but not sure where to go.  One of the guys on
> >> this
> >>> project had mentioned www.mfg.com, but I am pretty leery of it.  It is
> >> all
> >>> plastic machining, pvc sheet.  Here
> >>> is one of three, dimensions
> >>> are 4" x 2.35"
> >>>
> >>
> --
> >>> For Developers, A Lot Can Happen In A Second.
> >>> Boundary is the first to Know...and Tell You.
> >>> Monitor Your Applications in Ultra-Fine Resolution. Try it FREE!
> >>> http://p.sf.net/sfu/Boundary-d2dvs2
> >>> ___
> >>> Emc-users mailing list
> >>> Emc-users@lists.sourceforge.net
> >>> https://lists.sourceforge.net/lists/listinfo/emc-users
> >>>
> >>>
> >> How many do you need?
> >>
> >> Dave
> >>
> >>
> >>
> --
> >> For Developers, A Lot Can Happen In A Second.
> >> Boundary is the first to Know...and Tell You.
> >> Monitor Your Applications in Ultra-Fine Resolution. Try it FREE!
> >> http://p.sf.net/sfu/Boundary-d2dvs2
> >> ___
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> >> Emc-users@lists.sourceforge.net
> >> https://lists.sourceforge.net/lists/listinfo/emc-users
> >>
> >
> --
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> > Boundary is the first to Know...and Tell You.
> > Monitor Your Applications in Ultra-Fine Resolution. Try it FREE!
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> > ___
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> > Emc-users@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/emc-users
>
>
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Re: [Emc-users] C Compiler - MPLAB

[Erik Friesen]

I have heard AVR's are easier.  I think once you get used to the complete
picture, none are that much harder than the others.  I know AVR has had
some issues with their supply chain.  Microchip doesn't do much
handholding, I think their bread and butter is supplying the automotive.  I
have their tools, so I tend to stick with their lineup.  I have been
tempted with AVR's though.

On Mon, Apr 16, 2012 at 2:51 PM, Kirk Wallace
wrote:

> On Mon, 2012-04-16 at 14:33 -0400, Dave wrote:
> > Where is a good website that describes the software and hardware tool
> > chain required to develop and program Pic controllers?
> >
> > I've looked at the Willem programmers available on Ebay but I have no
> > idea if those are compatible with the newest software development tools
> > or not?
> >
> > Dave
>
> I don't mean to offend anybody, but AVR's are cheap and fall down easy
> to get started with. Why bother with PIC's? The only reason I can think
> of, is to fill time with the challenge at hand.
>
> --
> Kirk Wallace
> http://www.wallacecompany.com/machine_shop/
> http://www.wallacecompany.com/E45/index.html
> California, USA
>
>
>
> --
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> Boundary is the first to Know...and Tell You.
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>
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Re: [Emc-users] C Compiler - MPLAB

[Stephen Dubovsky]

> I don't mean to offend anybody, but AVR's are cheap and fall down easy
> to get started with. Why bother with PIC's? The only reason I can think
> of, is to fill time with the challenge at hand.
>
>
Haha.  I think the same thing now, but my suggestion is ARM.  We've used
PIC for over a decade at the office (+ TI dsp, + Motorola/freescale, +etc)
and have recently gone 100% ARM.  The Cortex M4(F) is bigger, faster &
cheaper than a TI 28xx fixed pt dsp and the Cortex M0 is faster & cheaper
than a tiny freescale HC08.  Whatever peripherals you need, someone prob
makes an ARM w/ just what you want.
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Re: [Emc-users] C Compiler - MPLAB

[Kenneth Lerman]

On 4/16/2012 3:06 PM, Stephen Dubovsky wrote:
>> I don't mean to offend anybody, but AVR's are cheap and fall down easy
>> to get started with. Why bother with PIC's? The only reason I can think
>> of, is to fill time with the challenge at hand.
>>
>>
> Haha.  I think the same thing now, but my suggestion is ARM.  We've used
> PIC for over a decade at the office (+ TI dsp, + Motorola/freescale, +etc)
> and have recently gone 100% ARM.  The Cortex M4(F) is bigger, faster&
> cheaper than a TI 28xx fixed pt dsp and the Cortex M0 is faster&  cheaper
> than a tiny freescale HC08.  Whatever peripherals you need, someone prob
> makes an ARM w/ just what you want.
As far as I can tell, ARMs are in a different class. (Price, complexity, 
performance, etc.)

Ken

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Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors

[Andrew]

16 квітня 2012 р. 21:17 Peter C. Wallace  написав:

> sorry thats:
>
> freeby.mesanet.com/7i39icon.pdf
> freeby.mesanet.com/7i39quad.pdf
>
> Thanks Peter, I can trace the signals when my oscilloscope arrives. I
can't see... after 74HCT14 the encoder signals must go right to 50 pin
connector?

But it can't wait long, now I'll cut the cable and continue setting up 7i39
and asking questions.

Andrew
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Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors

[andy pugh]

On 16 April 2012 20:29, Andrew  wrote:

> But it can't wait long, now I'll cut the cable and continue setting up 7i39
> and asking questions.

Cable is cheap.


-- 
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Re: [Emc-users] machine shop advice

[John Thornton]

Erik,

I get invalid or incomplete for the dxf and bad file for the ad_prt 
file. Can you save the file as step or iges?

thanks
John

On 4/16/2012 2:00 PM, Erik Friesen wrote:
> The 3d pdf's created by alibre are a little flaky.
>
> DXF
> PDF
> Alibre
>
>
> On Mon, Apr 16, 2012 at 2:47 PM, John Thornton  wrote:
>
>> I can't see much on the pdf, do you have a cad drawing or 3d model of
>> the part?
>>
>> John Thornton
>>
>> On 4/16/2012 1:42 PM, Erik Friesen wrote:
>>> Around 50 pieces each.
>>>
>>> On Mon, Apr 16, 2012 at 2:34 PM, Dave   wrote:
>>>
 On 4/16/2012 1:35 PM, Erik Friesen wrote:
> Has anyone here use e-machine shop, or anything like it?  I am needing
>> to
> outsource some cnc work, but not sure where to go.  One of the guys on
 this
> project had mentioned www.mfg.com, but I am pretty leery of it.  It is
 all
> plastic machining, pvc sheet.  Here
> is one of three, dimensions
> are 4" x 2.35"
>
>> --
> For Developers, A Lot Can Happen In A Second.
> Boundary is the first to Know...and Tell You.
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> https://lists.sourceforge.net/lists/listinfo/emc-users
>
>
 How many do you need?

 Dave



>> --
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 Boundary is the first to Know...and Tell You.
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Re: [Emc-users] C Compiler - MPLAB

[Dave]

On 4/16/2012 2:51 PM, Kirk Wallace wrote:
> On Mon, 2012-04-16 at 14:33 -0400, Dave wrote:
>
>> Where is a good website that describes the software and hardware tool
>> chain required to develop and program Pic controllers?
>>
>> I've looked at the Willem programmers available on Ebay but I have no
>> idea if those are compatible with the newest software development tools
>> or not?
>>
>> Dave
>>  
> I don't mean to offend anybody, but AVR's are cheap and fall down easy
> to get started with. Why bother with PIC's? The only reason I can think
> of, is to fill time with the challenge at hand.
>
>

Kirk,

Excellent point.  I already have plenty of things to fill my time.  :-)

Thanks!

Dave


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Re: [Emc-users] C Compiler - MPLAB

[Greg Bernard]

I started out with AVR's beginning with an Arduino. Being a beginner 
programmer, this was a great introduction. But now I am preparing to start with 
PIC's for the simple reason that I can find a lot more motion control libraries 
which is my primary interest right now. I've read all sorts of raves about the 
merits of one over the other but to me they are both just tools and I will use 
whichever works best for the task at hand. Yes, there is a small cost 
difference but if you're talking about a couple of bucks for a single project 
it seems inconsequential. 


 
We are like tenant farmers chopping down the fence around our house for 
fuel when we should be using Nature's inexhaustible sources of energy -- sun, 
wind and tide. ... I'd put my money on the sun and solar energy. 
What a source of power! I hope we don't have to wait until oil and coal 
run out before we tackle that. -Thomas Edison, inventor (1847-1931) 



>
> From: Kirk Wallace 
>To: Enhanced Machine Controller (EMC)  
>Sent: Monday, April 16, 2012 1:51 PM
>Subject: Re: [Emc-users] C Compiler - MPLAB
> 
>On Mon, 2012-04-16 at 14:33 -0400, Dave wrote:
>> Where is a good website that describes the software and hardware tool 
>> chain required to develop and program Pic controllers?
>> 
>> I've looked at the Willem programmers available on Ebay but I have no 
>> idea if those are compatible with the newest software development tools 
>> or not?
>> 
>> Dave
>
>I don't mean to offend anybody, but AVR's are cheap and fall down easy
>to get started with. Why bother with PIC's? The only reason I can think
>of, is to fill time with the challenge at hand.
>
>-- 
>Kirk Wallace
>http://www.wallacecompany.com/machine_shop/
>http://www.wallacecompany.com/E45/index.html
>California, USA
>
>
>--
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>Boundary is the first to Know...and Tell You.
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 Ultra-Fine Resolution. Try it FREE!
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>
>
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Re: [Emc-users] C Compiler - MPLAB

[andy pugh]

On 16 April 2012 21:06, Dave  wrote:

> Excellent point.  I already have plenty of things to fill my time.  :-)

In that case, Arduino is a very convenient set of programmer,
(free/Free Linux) compiler and proto-board, and isn't ruiniously
expensive for one-offs.

-- 
atp
The idea that there is no such thing as objective truth is, quite simply, wrong.

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Re: [Emc-users] machine shop advice

[Joseph Chiu]

I've recently got a bunch of parts from FirstCut (Part of ProtoLabs,
which started out as ProtoMold) that turned out well.  Years ago, I
used Rapid Sheet Metal for sheet work, and was very happy.  Their
affiliate company, Rapid Machining, is working on a piece for me right
now.  Their prices were better than FirstCut for 5-days turns, while
FC was better for 1-3 day turns.

With FC and RM, they used my exported STEP 214 files from Alibre.
With FC, I use their online system to call out the threads.  With RM,
I had a separate .pdf calling out my threads.

Both places have a +/- 0.005" as a standard tolerance; but usually
achieves much better than that.  FC only supports a limited number of
threads.  RM appears to be more flexible.

One thing about FC -- they claim they have a bed size limit of 7" x
10" -- but it turns out for thinner parts, the supported bed size can
be much bigger, depending on thickness.

On Mon, Apr 16, 2012 at 12:46 PM, John Thornton  wrote:
> Erik,
>
> I get invalid or incomplete for the dxf and bad file for the ad_prt
> file. Can you save the file as step or iges?
>
> thanks
> John
>
> On 4/16/2012 2:00 PM, Erik Friesen wrote:
>> The 3d pdf's created by alibre are a little flaky.
>>
>> DXF
>> PDF
>> Alibre
>>
>>
>> On Mon, Apr 16, 2012 at 2:47 PM, John Thornton  wrote:
>>
>>> I can't see much on the pdf, do you have a cad drawing or 3d model of
>>> the part?
>>>
>>> John Thornton
>>>
>>> On 4/16/2012 1:42 PM, Erik Friesen wrote:
 Around 50 pieces each.

 On Mon, Apr 16, 2012 at 2:34 PM, Dave   wrote:

> On 4/16/2012 1:35 PM, Erik Friesen wrote:
>> Has anyone here use e-machine shop, or anything like it?  I am needing
>>> to
>> outsource some cnc work, but not sure where to go.  One of the guys on
> this
>> project had mentioned www.mfg.com, but I am pretty leery of it.  It is
> all
>> plastic machining, pvc sheet.  Here
>> is one of three, dimensions
>> are 4" x 2.35"
>>
>>> --
>> For Developers, A Lot Can Happen In A Second.
>> Boundary is the first to Know...and Tell You.
>> Monitor Your Applications in Ultra-Fine Resolution. Try it FREE!
>> http://p.sf.net/sfu/Boundary-d2dvs2
>> ___
>> Emc-users mailing list
>> Emc-users@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/emc-users
>>
>>
> How many do you need?
>
> Dave
>
>
>
>>> --
> For Developers, A Lot Can Happen In A Second.
> Boundary is the first to Know...and Tell You.
> Monitor Your Applications in Ultra-Fine Resolution. Try it FREE!
> http://p.sf.net/sfu/Boundary-d2dvs2
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>
>>> --
 For Developers, A Lot Can Happen In A Second.
 Boundary is the first to Know...and Tell You.
 Monitor Your Applications in Ultra-Fine Resolution. Try it FREE!
 http://p.sf.net/sfu/Boundary-d2dvs2
 ___
 Emc-users mailing list
 Emc-users@lists.sourceforge.net
 https://lists.sourceforge.net/lists/listinfo/emc-users
>>>
>>> --
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>>> Boundary is the first to Know...and Tell You.
>>> Monitor Your Applications in Ultra-Fine Resolution. Try it FREE!
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>>>
>> --
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>> Boundary is the first to Know...and Tell You.
>> Monitor Your Applications in Ultra-Fine Resolution. Try it FREE!
>> http://p.sf.net/sfu/Boundary-d2dvs2
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>> https://lists.sourceforge.net/lists/listinfo/emc-users
>
> --
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> https

Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors

[Peter C. Wallace]

On Mon, 16 Apr 2012, Andrew wrote:


Date: Mon, 16 Apr 2012 22:29:46 +0300
From: Andrew 
Reply-To: "Enhanced Machine Controller (EMC)"

To: "Enhanced Machine Controller (EMC)" 
Subject: Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors

16  2012 ??. 21:17 Peter C. Wallace  
??:



sorry thats:

freeby.mesanet.com/7i39icon.pdf
freeby.mesanet.com/7i39quad.pdf

Thanks Peter, I can trace the signals when my oscilloscope arrives. I
can't see... after 74HCT14 the encoder signals must go right to 50 pin
connector?

Sure and thats in the manual



But it can't wait long, now I'll cut the cable and continue setting up 7i39
and asking questions.



Andrew


Peter Wallace
Mesa Electronics--
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Re: [Emc-users] C Compiler - MPLAB

[Neil]

Hi guys,

Lurker waking up with this thread.  I use PIC's day and night for 
commercial use, and want to chime in also...

Depending on what you want to do, PICs are great.  AVR's and PIC's 
generally fit the same application space, but Atmel (the AVR folks) 
still struggling to make a profit after several years, so I cannot put 
them into production for anything.  Microchip has never discontinued a 
PIC to date AFAIK.  Atmel has gone more hobbyist in recent years and has 
gained popularity because of the Arduino.  Microchip continues to target 
the commercial markets, so yes you can expect less direct support from 
them.  But IME Atmel's support has been poor and Microchip will respond 
directly to me when I need.  Still though, there is great forum support 
for both.

Atmel has pretty much touted C as the language of choice for years now, 
while Microchip has pushed assembly and is more recently starting to 
push C.  Your choice depends on what you want to do, but I still use 
assembly quite a bit for serious bit-banging.  C of course is much 
quicker to program in.  Atmel offers their C compiler for free, while 
Microchip offers their non-optimizing version for free.  In my tests, 
that still produces great code, but if you want to do a one-off project 
in C and optimize the hell out of it, then Atmel may be the choice for you.

ARM processors fit a different space (that require a bit more processing 
power), but if you know how to code it's amazing what you can do with a 
PIC32.  For example, look at the Chipkit, which is a PIC32 clone of the 
Arduino running at 80Mhz and 32-bit processor, and it runs rings around 
the Arduino while being code compatible.  ARM's may sound nicer because 
of speed and power, but for commercial use, cost becomes a big factor.  
For a one-off, spending a couple extra bucks is no issue.

Anyway, my point here is that smaller microcontrollers like PICs and 
AVRs are a great choice depending on what you want to do, and the time 
and money you want to invest in it.

Cheers,
-Neil.



On 4/16/2012 3:06 PM, Stephen Dubovsky wrote:
>> I don't mean to offend anybody, but AVR's are cheap and fall down easy
>> to get started with. Why bother with PIC's? The only reason I can think
>> of, is to fill time with the challenge at hand.
>>
>>
> Haha.  I think the same thing now, but my suggestion is ARM.  We've used
> PIC for over a decade at the office (+ TI dsp, + Motorola/freescale, +etc)
> and have recently gone 100% ARM.  The Cortex M4(F) is bigger, faster&
> cheaper than a TI 28xx fixed pt dsp and the Cortex M0 is faster&  cheaper
> than a tiny freescale HC08.  Whatever peripherals you need, someone prob
> makes an ARM w/ just what you want.
> --
> For Developers, A Lot Can Happen In A Second.
> Boundary is the first to Know...and Tell You.
> Monitor Your Applications in Ultra-Fine Resolution. Try it FREE!
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Re: [Emc-users] machine shop advice

[Erik Friesen]

Try these again.The ad_prt is an alibre file.  I intend to get iges/step
exporting, but currently only have alibre pe.

For some reason, fireftp isn't doing its job, and was uploading incomplete
files.

> DXF
> PDF
> Alibre



On Mon, Apr 16, 2012 at 4:26 PM, Joseph Chiu  wrote:

> I've recently got a bunch of parts from FirstCut (Part of ProtoLabs,
> which started out as ProtoMold) that turned out well.  Years ago, I
> used Rapid Sheet Metal for sheet work, and was very happy.  Their
> affiliate company, Rapid Machining, is working on a piece for me right
> now.  Their prices were better than FirstCut for 5-days turns, while
> FC was better for 1-3 day turns.
>
> With FC and RM, they used my exported STEP 214 files from Alibre.
> With FC, I use their online system to call out the threads.  With RM,
> I had a separate .pdf calling out my threads.
>
> Both places have a +/- 0.005" as a standard tolerance; but usually
> achieves much better than that.  FC only supports a limited number of
> threads.  RM appears to be more flexible.
>
> One thing about FC -- they claim they have a bed size limit of 7" x
> 10" -- but it turns out for thinner parts, the supported bed size can
> be much bigger, depending on thickness.
>
> On Mon, Apr 16, 2012 at 12:46 PM, John Thornton  wrote:
> > Erik,
> >
> > I get invalid or incomplete for the dxf and bad file for the ad_prt
> > file. Can you save the file as step or iges?
> >
> > thanks
> > John
> >
> > On 4/16/2012 2:00 PM, Erik Friesen wrote:
> >> The 3d pdf's created by alibre are a little flaky.
> >>
> >> DXF
> >> PDF
> >> Alibre
> >>
> >>
> >> On Mon, Apr 16, 2012 at 2:47 PM, John Thornton
>  wrote:
> >>
> >>> I can't see much on the pdf, do you have a cad drawing or 3d model of
> >>> the part?
> >>>
> >>> John Thornton
> >>>
> >>> On 4/16/2012 1:42 PM, Erik Friesen wrote:
>  Around 50 pieces each.
> 
>  On Mon, Apr 16, 2012 at 2:34 PM, Dave   wrote:
> 
> > On 4/16/2012 1:35 PM, Erik Friesen wrote:
> >> Has anyone here use e-machine shop, or anything like it?  I am
> needing
> >>> to
> >> outsource some cnc work, but not sure where to go.  One of the guys
> on
> > this
> >> project had mentioned www.mfg.com, but I am pretty leery of it.
>  It is
> > all
> >> plastic machining, pvc sheet.  Here
> >> is one of three, dimensions
> >> are 4" x 2.35"
> >>
> >>>
> --
> >> For Developers, A Lot Can Happen In A Second.
> >> Boundary is the first to Know...and Tell You.
> >> Monitor Your Applications in Ultra-Fine Resolution. Try it FREE!
> >> http://p.sf.net/sfu/Boundary-d2dvs2
> >> ___
> >> Emc-users mailing list
> >> Emc-users@lists.sourceforge.net
> >> https://lists.sourceforge.net/lists/listinfo/emc-users
> >>
> >>
> > How many do you need?
> >
> > Dave
> >
> >
> >
> >>>
> --
> > For Developers, A Lot Can Happen In A Second.
> > Boundary is the first to Know...and Tell You.
> > Monitor Your Applications in Ultra-Fine Resolution. Try it FREE!
> > http://p.sf.net/sfu/Boundary-d2dvs2
> > ___
> > Emc-users mailing list
> > Emc-users@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/emc-users
> >
> >>>
> --
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> >>>
> >>>
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> >>> Boundary is the first to Know...and Tell You.
> >>> Monitor Your Applications in Ultra-Fine Resolution. Try it FREE!
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> >>>
> >>
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> >> Boundary is the first to Know...and Tell You.
> >> Monitor Your Applications in Ultra-Fine R

Re: [Emc-users] C Compiler - MPLAB

[Stephen Dubovsky]

> As far as I can tell, ARMs are in a different class. (Price, complexity,
> performance, etc.)
>
> Ken
>

They ARE in a different class:)  They're cheaper AND faster.  The ARM
support community is bigger than any PIC/TI/AVR/etc. (probably bigger than
anything but the x86.)

As examples:
1) NXP LPC (Cortex M0) is <$0.50 in qty.  Digikey has for ~$2 for
singles.  Its cheaper then a HC08QT/QY w/ more pins, more speed, lower
power, more memory, 32bit vs 8, etc, etc.

2) ST STM32F407 (Cortex M4F) is ~$5 in qty (depends on memory).  Digikey
has for ~$11 for single in VET6 pkg.  200MIPS, Ethernet MAC, USB, 192kB
RAM, 512kB FLASH, 24x 12bit ADC (~7MSPS in some modes) and *SINGLE CYCLE*
IEEE754 single-precision floating point multiply or add.  MAC is 2cyc.
Divides and SQRT instructions take only 14 cycles.

Just doing a quick digikey ATmega search finds the AVR ATMega2560 (maybe
not the best comparison but Im in a hurry).  $18ea, 8kB RAM, 256kB flash,
16MIPS, 8-bit processor.  Not even on the same continent.

Like I said, we've used them all at work (we have millions of units
shipped).  We were fairly dedicated PIC fans until we needed something w/
more memory than a PIC18.  That lead us to ARM after a fairly exhaustive
comparison of EVERYTHING.  The icing on the cake was the tiny processors
like the LPC that were *WAY* better and (marginally) cheaper than the
HC08s we use on our super low end products (the equivalent of a
'toaster':)).  It REALLY opened our eyes.  We had no idea ARMs had
penetrated so low end into the mkt.  There are dozens of companies making
thousands of ARM processor variations.  One will have the
peripherial/memory flavor at the price point you need.  The code is mostly
compatible from the top to bottom of the cortex line (and *WAY* more than
porting from TI to AVR to PIC, etc)

Stephen
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Re: [Emc-users] C Compiler - MPLAB

[Bill Hill]

On 16 Apr 2012, at 21:09, Greg Bernard wrote:

> I started out with AVR's beginning with an Arduino. Being a beginner 
> programmer, this was a great introduction. But now I am preparing to start 
> with PIC's for the simple reason that I can find a lot more motion control 
> libraries which is my primary interest right now. I've read all sorts of 
> raves about the merits of one over the other but to me they are both just 
> tools and I will use whichever works best for the task at hand. Yes, there is 
> a small cost difference but if you're talking about a couple of bucks for a 
> single project it seems inconsequential. 

Hi,
You've seen grbl? http://grbl.tumblr.com Which speaks a little gcode and runs 
on arduino (treats it like an avr, though). Or the reprap controller? 
http://reprap.org/wiki/G-code
Bill
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Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors

[Andrew]

16 квітня 2012 р. 22:43 andy pugh  написав:

> On 16 April 2012 20:29, Andrew  wrote:
>
> > But it can't wait long, now I'll cut the cable and continue setting up
> 7i39
> > and asking questions.
>
> Cable is cheap.
>

And its every wire proved multi-cored. I thought it's solid.

The encoder is connected, as well as X axis motor. I also connected
bldc.0.init to estop

net estop-out <=  iocontrol.0.user-enable-out
net estop-out =>  bldc.0.init
net x-is-init =>  iocontrol.0.emc-enable-in
*
*
I start Linuxcnc and nothing happens. After I push estop button, there's
some pause, and that's all. The motor power is connected, but the motor
seems dead. Since I enabled 3pwmgens two orange LEDs light on 7i39 when the
machine is started. And one green LED is always on.
What might be wrong?

Here's the beginning of HAL:

loadrt trivkins
loadrt [EMCMOT]EMCMOT servo_period_nsec=[EMCMOT]SERVO_PERIOD
num_joints=[TRAJ]AXES
loadrt probe_parport
loadrt hostmot2
loadrt hm2_7i43 config="firmware=hm2/7i43-4/SVST4_4_7i39.BIT num_encoders=3
num_pwmgens=0 num_3pwmgens=3 num_stepgens=0"
setp hm2_7i43.0.3pwmgen.frequency 2
setp hm2_7i43.0.watchdog.timeout_ns 1000

loadrt pid names=pid.x,pid.y,pid.z
loadrt bldc cfg=q,q,q

addf hm2_7i43.0.read servo-thread
addf motion-command-handler servo-thread
addf motion-controller servo-thread
addf pid.x.do-pid-calcs servo-thread
addf pid.y.do-pid-calcs servo-thread
addf pid.z.do-pid-calcs servo-thread
addf bldc.0 servo-thread
addf bldc.1 servo-thread
addf bldc.2 servo-thread
addf hm2_7i43.0.write servo-thread
addf hm2_7i43.0.pet_watchdog   servo-thread

#***
#  AXIS X
#***

# -- BLDC setup --
setp   bldc.0.drive-offset   0
setp   bldc.0.rev0
setp   bldc.0.scale  200
setp   bldc.0.poles  4
net x-a-value   bldc.0.A-value => hm2_7i43.0.3pwmgen.00.A-value
net x-b-value   bldc.0.B-value => hm2_7i43.0.3pwmgen.00.B-value
net x-c-value   bldc.0.C-value => hm2_7i43.0.3pwmgen.00.C-value

net x-pos-rawcounts bldc.0.rawcounts
#net x-index-enable bldc.0.index-enable
net x-bldc-current bldc.0.out
net x-meas-anglebldc.0.phase-angle
net x-outputbldc.0.value
#net x-enable   bldc.0.init
net x-is-init   bldc.0.init-done

setp   pid.x.Pgain [AXIS_0]P
setp   pid.x.Igain [AXIS_0]I
setp   pid.x.Dgain [AXIS_0]D
setp   pid.x.bias  [AXIS_0]BIAS
setp   pid.x.FF0   [AXIS_0]FF0
setp   pid.x.FF1   [AXIS_0]FF1
setp   pid.x.FF2   [AXIS_0]FF2
setp   pid.x.deadband  [AXIS_0]DEADBAND
setp   pid.x.maxoutput [AXIS_0]MAX_OUTPUT

#net x-index-enable  <=>  pid.x.index-enable
net x-enable   => pid.x.enable
net x-output   => pid.x.output
net x-pos-cmd  => pid.x.command
net x-vel-fb   => pid.x.command-deriv
net x-pos-fb   => pid.x.feedback

# ---TPPWM Generator signals/setup---
setp hm2_7i43.0.3pwmgen.00.scale 200
setp hm2_7i43.0.3pwmgen.00.enable 1
setp hm2_7i43.0.3pwmgen.00.fault-invert 1

# ---Encoder feedback signals/setup---
setphm2_7i43.0.encoder.00.counter-mode 0
setphm2_7i43.0.encoder.00.filter 1
#setphm2_7i43.0.encoder.00.index-invert 0
#setphm2_7i43.0.encoder.00.index-mask 0
#setphm2_7i43.0.encoder.00.index-mask-invert 0
setphm2_7i43.0.encoder.00.scale  [AXIS_0]ENCODER_SCALE

net x-pos-fb   <=  hm2_7i43.0.encoder.00.position
net x-vel-fb   <=  hm2_7i43.0.encoder.00.velocity
net x-pos-fb   =>  axis.0.motor-pos-fb
#net x-index-enableaxis.0.index-enable  <=>
 hm2_7i43.0.encoder.02.index-enable
net x-pos-rawcounts<=  hm2_7i43.0.encoder.00.rawcounts

In ini file all PID parameters set to 0, except P = 1.
The motors coils looks OK, when I short UVW wires there's significant
resistance to move the forcer.

I'd appreciate any help,
Andrew
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Re: [Emc-users] machine shop advice

[John Thornton]

The dxf and pdf came through this time but too much detail is missing. 
The alibre web site says the software can export to STL which I can open.

John

On 4/16/2012 3:36 PM, Erik Friesen wrote:
> Try these again.The ad_prt is an alibre file.  I intend to get iges/step
> exporting, but currently only have alibre pe.
>
> For some reason, fireftp isn't doing its job, and was uploading incomplete
> files.
>
>> DXF
>> PDF
>> Alibre
>
>
> On Mon, Apr 16, 2012 at 4:26 PM, Joseph Chiu  wrote:
>
>> I've recently got a bunch of parts from FirstCut (Part of ProtoLabs,
>> which started out as ProtoMold) that turned out well.  Years ago, I
>> used Rapid Sheet Metal for sheet work, and was very happy.  Their
>> affiliate company, Rapid Machining, is working on a piece for me right
>> now.  Their prices were better than FirstCut for 5-days turns, while
>> FC was better for 1-3 day turns.
>>
>> With FC and RM, they used my exported STEP 214 files from Alibre.
>> With FC, I use their online system to call out the threads.  With RM,
>> I had a separate .pdf calling out my threads.
>>
>> Both places have a +/- 0.005" as a standard tolerance; but usually
>> achieves much better than that.  FC only supports a limited number of
>> threads.  RM appears to be more flexible.
>>
>> One thing about FC -- they claim they have a bed size limit of 7" x
>> 10" -- but it turns out for thinner parts, the supported bed size can
>> be much bigger, depending on thickness.
>>
>> On Mon, Apr 16, 2012 at 12:46 PM, John Thornton  wrote:
>>> Erik,
>>>
>>> I get invalid or incomplete for the dxf and bad file for the ad_prt
>>> file. Can you save the file as step or iges?
>>>
>>> thanks
>>> John
>>>
>>> On 4/16/2012 2:00 PM, Erik Friesen wrote:
 The 3d pdf's created by alibre are a little flaky.

 DXF
 PDF
 Alibre


 On Mon, Apr 16, 2012 at 2:47 PM, John Thornton
>>   wrote:
> I can't see much on the pdf, do you have a cad drawing or 3d model of
> the part?
>
> John Thornton
>
> On 4/16/2012 1:42 PM, Erik Friesen wrote:
>> Around 50 pieces each.
>>
>> On Mon, Apr 16, 2012 at 2:34 PM, Davewrote:
>>
>>> On 4/16/2012 1:35 PM, Erik Friesen wrote:
 Has anyone here use e-machine shop, or anything like it?  I am
>> needing
> to
 outsource some cnc work, but not sure where to go.  One of the guys
>> on
>>> this
 project had mentioned www.mfg.com, but I am pretty leery of it.
>>   It is
>>> all
 plastic machining, pvc sheet.  Here
 is one of three, dimensions
 are 4" x 2.35"

>> --
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>>> How many do you need?
>>>
>>> Dave
>>>
>>>
>>>
>> --
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>>>
>> --
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>
>> --
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>
>> -

Re: [Emc-users] machine shop advice

[Erik Friesen]

Ok, hadn't thought that far.  www.aercon.net/Public/Pumpitems.zip

On Mon, Apr 16, 2012 at 5:13 PM, John Thornton  wrote:

> The dxf and pdf came through this time but too much detail is missing.
> The alibre web site says the software can export to STL which I can open.
>
> John
>
> On 4/16/2012 3:36 PM, Erik Friesen wrote:
> > Try these again.The ad_prt is an alibre file.  I intend to get iges/step
> > exporting, but currently only have alibre pe.
> >
> > For some reason, fireftp isn't doing its job, and was uploading
> incomplete
> > files.
> >
> >> DXF
> >> PDF
> >> Alibre
> >
> >
> > On Mon, Apr 16, 2012 at 4:26 PM, Joseph Chiu
>  wrote:
> >
> >> I've recently got a bunch of parts from FirstCut (Part of ProtoLabs,
> >> which started out as ProtoMold) that turned out well.  Years ago, I
> >> used Rapid Sheet Metal for sheet work, and was very happy.  Their
> >> affiliate company, Rapid Machining, is working on a piece for me right
> >> now.  Their prices were better than FirstCut for 5-days turns, while
> >> FC was better for 1-3 day turns.
> >>
> >> With FC and RM, they used my exported STEP 214 files from Alibre.
> >> With FC, I use their online system to call out the threads.  With RM,
> >> I had a separate .pdf calling out my threads.
> >>
> >> Both places have a +/- 0.005" as a standard tolerance; but usually
> >> achieves much better than that.  FC only supports a limited number of
> >> threads.  RM appears to be more flexible.
> >>
> >> One thing about FC -- they claim they have a bed size limit of 7" x
> >> 10" -- but it turns out for thinner parts, the supported bed size can
> >> be much bigger, depending on thickness.
> >>
> >> On Mon, Apr 16, 2012 at 12:46 PM, John Thornton
>  wrote:
> >>> Erik,
> >>>
> >>> I get invalid or incomplete for the dxf and bad file for the ad_prt
> >>> file. Can you save the file as step or iges?
> >>>
> >>> thanks
> >>> John
> >>>
> >>> On 4/16/2012 2:00 PM, Erik Friesen wrote:
>  The 3d pdf's created by alibre are a little flaky.
> 
>  DXF
>  PDF
>  Alibre
> 
> 
>  On Mon, Apr 16, 2012 at 2:47 PM, John Thornton
> >>   wrote:
> > I can't see much on the pdf, do you have a cad drawing or 3d model of
> > the part?
> >
> > John Thornton
> >
> > On 4/16/2012 1:42 PM, Erik Friesen wrote:
> >> Around 50 pieces each.
> >>
> >> On Mon, Apr 16, 2012 at 2:34 PM, Davewrote:
> >>
> >>> On 4/16/2012 1:35 PM, Erik Friesen wrote:
>  Has anyone here use e-machine shop, or anything like it?  I am
> >> needing
> > to
>  outsource some cnc work, but not sure where to go.  One of the
> guys
> >> on
> >>> this
>  project had mentioned www.mfg.com, but I am pretty leery of it.
> >>   It is
> >>> all
>  plastic machining, pvc sheet.  Here
>  is one of three,
> dimensions
>  are 4" x 2.35"
> 
> >>
> --
>  For Developers, A Lot Can Happen In A Second.
>  Boundary is the first to Know...and Tell You.
>  Monitor Your Applications in Ultra-Fine Resolution. Try it FREE!
>  http://p.sf.net/sfu/Boundary-d2dvs2
>  ___
>  Emc-users mailing list
>  Emc-users@lists.sourceforge.net
>  https://lists.sourceforge.net/lists/listinfo/emc-users
> 
> 
> >>> How many do you need?
> >>>
> >>> Dave
> >>>
> >>>
> >>>
> >>
> --
> >>> For Developers, A Lot Can Happen In A Second.
> >>> Boundary is the first to Know...and Tell You.
> >>> Monitor Your Applications in Ultra-Fine Resolution. Try it FREE!
> >>> http://p.sf.net/sfu/Boundary-d2dvs2
> >>> ___
> >>> Emc-users mailing list
> >>> Emc-users@lists.sourceforge.net
> >>> https://lists.sourceforge.net/lists/listinfo/emc-users
> >>>
> >>
> --
> >> For Developers, A Lot Can Happen In A Second.
> >> Boundary is the first to Know...and Tell You.
> >> Monitor Your Applications in Ultra-Fine Resolution. Try it FREE!
> >> http://p.sf.net/sfu/Boundary-d2dvs2
> >> ___
> >> Emc-users mailing list
> >> Emc-users@lists.sourceforge.net
> >> https://lists.sourceforge.net/lists/listinfo/emc-users
> >
> >>
> --
> > For Developers, A Lot Can Happen In A Sec

Re: [Emc-users] G540 Test Update

[Kirk Wallace]

I got a close up of the pump input area and marked up what I think is on
the board:
http://wallacecompany.com/machine_shop/G540/G540_upper_bottom_z-1b.png 

So, I think C is the capacitor coupler. Then the signal drives one SMT
diode and across another (filter?) capacitor and the opto-c LED with
limit resistor.

Searching KL4 got this as a possible component:
http://www.datasheets.org.uk/indexdl/Datasheet-093/DSA0063378.pdf 


-- 
Kirk Wallace
http://www.wallacecompany.com/machine_shop/
http://www.wallacecompany.com/E45/index.html
California, USA


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Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors

[andy pugh]

On 16 April 2012 22:10, Andrew  wrote:

> I'd appreciate any help,

I would try:

halrun
source 
unlinkp hm2_7i43.0.3pwmgen.00.A-value
unlinkp hm2_7i43.0.3pwmgen.00.B-value
unlinkp hm2_7i43.0.3pwmgen.00.C-value

setp hm2_7i43.0.3pwmgen.00.A-value 0.1

(and so on)
and see what happens.

-- 
atp
The idea that there is no such thing as objective truth is, quite simply, wrong.

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Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors

[Peter C. Wallace]

>On Tue, 17 Apr 2012, Andrew wrote:
>
>loadrt hm2_7i43 config="firmware=hm2/7i43-4/SVST4_4_7i39.BIT num_encoders=3


What bitfile is this? I don have anything similar here...

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Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors

[Andrew]

17 квітня 2012 р. 00:47 Peter C. Wallace  написав:

> >On Tue, 17 Apr 2012, Andrew wrote:
> >
> >loadrt hm2_7i43 config="firmware=hm2/7i43-4/SVST4_4_7i39.BIT
> num_encoders=3
>
>
> What bitfile is this? I don have anything similar here...
>
> That's how I renamed svsttp4_4_7I39.bit
Is it what I need?

Andrew
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Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors

[Peter C. Wallace]

On Tue, 17 Apr 2012, Andrew wrote:


Date: Tue, 17 Apr 2012 00:57:26 +0300
From: Andrew 
Reply-To: "Enhanced Machine Controller (EMC)"

To: "Enhanced Machine Controller (EMC)" 
Subject: Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors

17  2012 ??. 00:47 Peter C. Wallace  
??:



>On Tue, 17 Apr 2012, Andrew wrote:
>
>loadrt hm2_7i43 config="firmware=hm2/7i43-4/SVST4_4_7i39.BIT
num_encoders=3


What bitfile is this? I don have anything similar here...

That's how I renamed svsttp4_4_7I39.bit

Is it what I need?

Andrew


Its funny because it has the stepgen outputs but otherwise it should work

Peter Wallace
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Re: [Emc-users] C Compiler - MPLAB

[Przemek Klosowski]

On Mon, Apr 16, 2012 at 3:20 PM, Kenneth Lerman
 wrote:
> On 4/16/2012 3:06 PM, Stephen Dubovsky wrote:
>>> I don't mean to offend anybody, but AVR's are cheap and fall down easy
>>> to get started with. Why bother with PIC's? The only reason I can think
>>> of, is to fill time with the challenge at hand.
>>>
>>>
>> Haha.  I think the same thing now, but my suggestion is ARM.  We've used
>> PIC for over a decade at the office (+ TI dsp, + Motorola/freescale, +etc)
>> and have recently gone 100% ARM.  The Cortex M4(F) is bigger, faster&
>> cheaper than a TI 28xx fixed pt dsp and the Cortex M0 is faster&  cheaper
>> than a tiny freescale HC08.  Whatever peripherals you need, someone prob
>> makes an ARM w/ just what you want.
> As far as I can tell, ARMs are in a different class. (Price, complexity,
> performance, etc.)

Not really---LPC1xxx are well under 1$, and the Cortex M parts are
quite integrated and don't need external memory or peripherals.
OK, I give you one advantage---probably the smallest package I have
ever seen for ARM is QFN-32 pin; no 8-pin DILs.
The complexity does come in because there are so many of them: NXP,
ST, TI, Broadcom, Marvell and Atmel, each one a little different; but
if you are looking for low price/complexity, just stick to one of
them, for instance NXP LPC series.

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Re: [Emc-users] C Compiler - MPLAB

[Przemek Klosowski]

On Mon, Apr 16, 2012 at 3:40 PM, Neil  wrote:
> Hi guys,
>
> Lurker waking up with this thread.  I use PIC's day and night for
> commercial use, and want to chime in also...
...
> ARM processors fit a different space (that require a bit more processing
> power), but if you know how to code it's amazing what you can do with a
> PIC32.  For example, look at the Chipkit, which is a PIC32 clone of the
> Arduino running at 80Mhz and 32-bit processor, and it runs rings around
> the Arduino while being code compatible.  ARM's may sound nicer because
> of speed and power, but for commercial use, cost becomes a big factor.

Cool, but PIC32 is just Microchip's licensed MIPS core, so it really
is in the same class as the ARM microcontrollers. I see that the price
point is 1-2$, and packaging of 30 or more pins. Microchip has a
really disjointed product line: they recommend assembler while having
a whole bunch of binary-incompatible product lines
(PIC-12,14,16.17,18,24,28,32... surely I forgot something). On the
other hand, you have to give them props for excellent execution (no
shortages) and long term support of their product line.

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Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors

[Peter C. Wallace]

Just verified SVSTTP4_4_7I39.bit md5 = 656b450f9af742af80c41487cd51772b

encoder and PWM work as expected


Andrew
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Peter Wallace
Mesa Electronics

(\__/)
(='.'=) This is Bunny. Copy and paste bunny into your
(")_(") signature to help him gain world domination.


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Re: [Emc-users] C Compiler - MPLAB

[Stephen Dubovsky]

> The complexity does come in because there are so many of them: NXP,
> ST, TI, Broadcom, Marvell and Atmel, each one a little different; but
> if you are looking for low price/complexity, just stick to one of
> them, for instance NXP LPC series.
>

8 pin DIP?!  Does anyone release (new) though hole parts anymore? :)  SMT
is just something everyone has to get use to.  Its not going away.  I don't
mind the leadless pkgs but we shy away from BGAs so far.  Rework is
difficult and we have no xray for inspection.  As I told you when you were
here, the IR DirectFETs is the closest thing we use to hidden pads but it
has huge contacts.  You can even do a fair job of them by hand squirting
paste and throwing in the reflow oven.

Agreed, each processor vendor has different peripherals.  The CMSIS
libraries abstract that.  Its not 100% universal (yet), but you can spend a
little time fixing and abstracting the HAL as much as you need.  The cores
are 100% identical though.  We've had very little trouble moving stuff
to/from a M0 to M4.  We're using the M0 as smart I2C I/O expanders w/ a M4
motherboard and the com code is the same in both.  So yes, still a little
different but 1000x more common than different processor families.

Stephen
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Re: [Emc-users] C Compiler - MPLAB

[Przemek Klosowski]

On Mon, Apr 16, 2012 at 6:36 PM, Stephen Dubovsky  wrote:

> 8 pin DIP?!  Does anyone release (new) though hole parts anymore? :)  SMT
> is just something everyone has to get use to.

What was the lowest pin-count ARM that you're aware of? Sometimes 4
pins is all you need :)

BTW, DIPs are still coming out, e.g. from Microchip, for prototyping
on breadboards etc. I agree that it doesn't make much sense anymore,
except maybe they are an established formfactor for small pin counts
(8-14-20). Not that you couldn't do 8-pin SMT.

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Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors

[Andrew]

17 квітня 2012 р. 00:40 andy pugh  написав:

> halrun
> source 
> unlinkp hm2_7i43.0.3pwmgen.00.A-value
> unlinkp hm2_7i43.0.3pwmgen.00.B-value
> unlinkp hm2_7i43.0.3pwmgen.00.C-value
>
> setp hm2_7i43.0.3pwmgen.00.A-value 0.1
>
> (and so on)
> and see what happens.
>

It's not so simple, because ini file is not loaded.
But I started entering first relevant strings from HAL, and when it came to
3pwmgen.00.A-value 0.1 , nothing happens again.

I seem to do some big stupid mistake, but which?
Again, any working config would be appreciated. I can even try config with
index or something. Let it at least start moving on init, then it will be
better.

Andrew

Andrew
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Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors

[Andrew]

17 квітня 2012 р. 01:48 Andrew  написав:

> It's not so simple, because ini file is not loaded.
> But I started entering first relevant strings from HAL, and when it came
> to 3pwmgen.00.A-value 0.1 , nothing happens again.
>


Well, I created very simplified HAL

loadrt trivkins
loadrt motmod servo_period_nsec=100 num_joints=3
loadrt probe_parport
loadrt hostmot2
loadrt hm2_7i43 config="firmware=hm2/7i43-4/SVST4_4_7i39.BIT num_encoders=1
num_pwmgens=0 num_3pwmgens=1 num_stepgens=0"
setp hm2_7i43.0.3pwmgen.frequency 1
setp hm2_7i43.0.watchdog.timeout_ns 1000

addf hm2_7i43.0.read servo-thread
addf motion-command-handler servo-thread
addf motion-controller servo-thread
addf hm2_7i43.0.write servo-thread
addf hm2_7i43.0.pet_watchdog   servo-thread

#***
#  AXIS X
#***

setp hm2_7i43.0.3pwmgen.00.scale 200
setp hm2_7i43.0.3pwmgen.00.enable 1
setp hm2_7i43.0.3pwmgen.00.fault-invert 1
setp hm2_7i43.0.3pwmgen.00.A-value 0.5
setp hm2_7i43.0.3pwmgen.00.B-value 0.3
setp hm2_7i43.0.3pwmgen.00.C-value 0.6

And nothing happens at all. Does it mean 3pwmgen is not working?
The only noticeable thing is when the machine starts, it becomes a little
bit harder to move the forcer. When it shuts down - it releases.
BTW I work with 2.5.0 from the flash drive.

Andrew
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Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors

[Peter C. Wallace]

On Tue, 17 Apr 2012, Andrew wrote:


Date: Tue, 17 Apr 2012 02:08:46 +0300
From: Andrew 
Reply-To: "Enhanced Machine Controller (EMC)"

To: "Enhanced Machine Controller (EMC)" 
Subject: Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors

17  2012 ??. 01:48 Andrew  
??:



It's not so simple, because ini file is not loaded.
But I started entering first relevant strings from HAL, and when it came
to 3pwmgen.00.A-value 0.1 , nothing happens again.




Well, I created very simplified HAL

snip



And nothing happens at all. Does it mean 3pwmgen is not working?
The only noticeable thing is when the machine starts, it becomes a little
bit harder to move the forcer. When it shuts down - it releases.
BTW I work with 2.5.0 from the flash drive.

Andrew


What is the 7I39 motor voltage ?

What are the motor ratings (current /voltage)?

Do the encoders work now (because not working  encoders suggests a 
wiring/cable error)


Peter Wallace
Mesa Electronics

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Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors

[andy pugh]

On 17 April 2012 00:08, Andrew  wrote:

> Well, I created very simplified HAL
>
> loadrt trivkins
> loadrt motmod servo_period_nsec=100 num_joints=3
> loadrt probe_parport
> loadrt hostmot2
> loadrt hm2_7i43 config="firmware=hm2/7i43-4/SVST4_4_7i39.BIT num_encoders=1
> num_pwmgens=0 num_3pwmgens=1 num_stepgens=0"
> setp     hm2_7i43.0.3pwmgen.frequency 1
> setp     hm2_7i43.0.watchdog.timeout_ns 1000
>
> addf hm2_7i43.0.read servo-thread
> addf motion-command-handler servo-thread
> addf motion-controller servo-thread
> addf hm2_7i43.0.write         servo-thread
> addf hm2_7i43.0.pet_watchdog   servo-thread

Anything in dmesg?

When I do that sort of thing, I don't use motomod, I loadrt threads
and addf thread1.

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Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors

[andy pugh]

show parameters might indicate any fault statuses…


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Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors

[Andrew]

17 квітня 2012 р. 02:27 Peter C. Wallace  написав:

> What is the 7I39 motor voltage ?
>
> What are the motor ratings (current /voltage)?
>
> Do the encoders work now (because not working  encoders suggests a
> wiring/cable error)
>

I give 44V to 7i39. But tomorrow I better use 24V PSU.
Calculated motor voltage is near 45-50V at 1m/s, peak current is 4.5A.
The motor jerks very strong when I touch its wires to power line.
Encoders work (not in this short config, of course).

Along with strange encoders that might look like 7i39 malfunction, but 2
broken cards... not probable.

17 квітня 2012 р. 02:27 andy pugh  написав:

> Anything in dmesg?
>

Nothing particular. No errors, just pins and usual loading messages.

Thanks Andy and Peter. I'll try again tomorrow.

Andrew
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[Emc-users] Hardinge HNC

[Terry Christophersen]

Hi all,
I have a Hardinge HNC that I am toying with the idea of retrofitting.I know 
there is 
a few on this list that have done so,I would like to know the amp/motor combos 
that are
in use.I have one that I put a Centroid on a few years ago but I dont have the 
workload
for another 10K kit for this one.I would just use it for a rush job so I dont 
have to tear down the 
other HNC.
 
I would assume that the origional axis motors would be usable as they were 
working when I
shut it off 5yrs ago.Maybe Jon Elsons amps would be a good choice?
 
Thanks
 
Terry

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Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors

[Peter C. Wallace]

On Tue, 17 Apr 2012, Andrew wrote:


Date: Tue, 17 Apr 2012 03:00:48 +0300
From: Andrew 
Reply-To: "Enhanced Machine Controller (EMC)"

To: "Enhanced Machine Controller (EMC)" 
Subject: Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors

17  2012 ??. 02:27 Peter C. Wallace  
??:



What is the 7I39 motor voltage ?

What are the motor ratings (current /voltage)?

Do the encoders work now (because not working  encoders suggests a
wiring/cable error)




I give 44V to 7i39. But tomorrow I better use 24V PSU>.
Calculated motor voltage is near 45-50V at 1m/s, peak current is 4.5A.
The motor jerks very strong when I touch its wires to power line.
Encoders work (not in this short config, of course).


I would not start at a voltage so close to the limits when first testing


Along with strange encoders that might look like 7i39 malfunction, but 2
broken cards... not probable.


What I am asking is if the 7I39 encoder inputs work normally now
If not, this still suggests a wiring error of some kind.



Peter Wallace
Mesa Electronics--
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Re: [Emc-users] G540 Test Update

[Peter Homann]

Oh, I don't think it is that cheap, just the west is so expensive. UPS want 
$70+ to ship 500g by air.

I get charged US$80.00 for 0.4m3 @ 350kgs shipped by sea from China. So that's 
$200.00 per cubic metre.


A 40ft container has a volume of 67.7 m3. So that's $13,540.00  for shipping a 
container of small  volumes.


And, how many containers does a slow boat from China hold

Cheers,

Peter


On 17/04/2012 2:23 AM, Dave wrote:
> Peter,
>
> How do the Chinese get stuff into the US so efficiently?

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Re: [Emc-users] G540 Test Update

[Peter Homann]

On 17/04/2012 2:17 AM, gene wrote:

> Probably the DC05 combo, as it will be driving the board in a 7x12.


Basically, the DC-05 is a DC-03 but without the microprocessor. The 
microprocessor' main job is to convert a low frequency PWM to a higher one to 
cross the opto-isolator. It means that the hot side of the circuit can use 
more efficient components.

The DC-05 works best with PWM frequencies of 1Kz and up.

Cheers,

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Re: [Emc-users] Voltage to frequency for analog input

[Thomas Powderly]

re reading analog input
make that
http://code.google.com/p/sector67-sandbox/wiki/FrequencyBasedAnalogInput
thx
tomp\

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Re: [Emc-users] Hardinge HNC

[Ian McMahon]

I'm using the original motors and original amps with good success.

Sent from my iPhone

On Apr 16, 2012, at 8:17 PM, Terry Christophersen  wrote:

> Hi all,
> I have a Hardinge HNC that I am toying with the idea of retrofitting.I know 
> there is 
> a few on this list that have done so,I would like to know the amp/motor 
> combos that are
> in use.I have one that I put a Centroid on a few years ago but I dont have 
> the workload
> for another 10K kit for this one.I would just use it for a rush job so I dont 
> have to tear down the 
> other HNC.
>  
> I would assume that the origional axis motors would be usable as they were 
> working when I
> shut it off 5yrs ago.Maybe Jon Elsons amps would be a good choice?
>  
> Thanks
>  
> Terry
> 
> --
> Better than sec? Nothing is better than sec when it comes to
> monitoring Big Data applications. Try Boundary one-second 
> resolution app monitoring today. Free.
> http://p.sf.net/sfu/Boundary-dev2dev
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