Re: [Emc-users] Mini-mill Motors

Kirk Wallace wrote: > > > I'm trying to get pricing. If I get one I could send it to you. I was > hoping that this might be a source for DIY CNC priced brushless motors, > without resorting to the eBay crap shoot. > I should mention that I have been looking for a stock brushless motor to go wit

Re: [Emc-users] Mini-mill Motors

Kirk Wallace wrote: > I'm trying to get pricing. If I get one I could send it to you. I was > hoping that this might be a source for DIY CNC priced brushless motors, > without resorting to the eBay crap shoot. > It looks quite promising. Without an encoder, it has to be a six-step drive scheme

Re: [Emc-users] ilowpass filter

Stephen Wille Padnos wrote: > Jon Elson wrote: > > >> John Kasunich wrote: >> >> >> >>> Be careful here. You must ensure that the count and the timestamp are >>> >> >from the SAME encoder edge. That's why I like stuffing both values into >> >>> the same wide register. The

Re: [Emc-users] Mini-mill Motors

On Wed, 2009-04-08 at 21:17 -0500, Jon Elson wrote: ... snip > > This motor ( 86BLF04 ) is catching my eye: > > http://www.wantmotor.com/ProductsView.asp?id=181&pid=81 > > > This is a brushless motor, you need a drive for it. Note that it has no > provision for adding an encoder! You mean bey

Re: [Emc-users] Mini-mill Motors

Kirk Wallace wrote: > On Wed, 2009-04-08 at 14:34 -0700, Kirk Wallace wrote: > >> Japan Servo >> ?A x 24V = ?Watts >> >> I'd guess this is roughly a 50 W motor, too, for the continuous rating. > > This motor ( 86BLF04 ) is catching my eye: > http://www.wantmotor.com/ProductsView.asp?id=181&

Re: [Emc-users] ilowpass filter

Jon Elson wrote: >John Kasunich wrote: > > >>Be careful here. You must ensure that the count and the timestamp are >>from the SAME encoder edge. That's why I like stuffing both values into >>the same wide register. There are certainly other ways to ensure the >>same result. You already de

Re: [Emc-users] ilowpass filter

John Kasunich wrote: > > > Be careful here. You must ensure that the count and the timestamp are > from the SAME encoder edge. That's why I like stuffing both values into > the same wide register. There are certainly other ways to ensure the > same result. You already deal with that problem

Re: [Emc-users] Bug in stepconf?

> > > In all of my testing, I started a new config - all I did was click > forward on every page. If there's any error in the "try" block near > that set_buttons_sensitive call (like zero division if you have accel, > pitch, one of the gears ... set to 0, or if any of the value text entry > a

Re: [Emc-users] Bug in stepconf?

Chris Morley wrote: >>For all three versions, I tried the standard XYZ mill, and also tried an >>XYZA mill. In all cases, including one where I pre-positioned the mouse >>cursor over the spot where the Forward button would appear, repeatedly >>clicking Forward would get me through all of the p

Re: [Emc-users] Bug in stepconf?

> Chris Morley wrote: > > >The line: > >self.widgets.druid1.set_buttons_sensitive(1,0,1,1) > > > >in method: > >def update_pps(self, axis): > > > >seems to cause this behavior. (comment it out and the pages work as expected) > >Why I don't know - yet. > > > > > Well, according to the Gnome Dr

Re: [Emc-users] Bug in stepconf?

Chris Morley wrote: >The line: >self.widgets.druid1.set_buttons_sensitive(1,0,1,1) > >in method: >def update_pps(self, axis): > >seems to cause this behavior. (comment it out and the pages work as expected) >Why I don't know - yet. > > Well, according to the Gnome Druid information here

Re: [Emc-users] Bug in stepconf?

> For all three versions, I tried the standard XYZ mill, and also tried an > XYZA mill. In all cases, including one where I pre-positioned the mouse > cursor over the spot where the Forward button would appear, repeatedly > clicking Forward would get me through all of the pages, up to the fi

Re: [Emc-users] Bug in stepconf?

Peter blodow wrote: >P.S.: I am using hardy (so does Alex Joni) so it may be different from dapper. >P.Blodow > >Hello Chris, >since I am using the German version I don't exactly how the buttons are >named. The way to leave the mouse over the button works only when going back. > > I tried the

Re: [Emc-users] Bug in stepconf?

> > Chris, I see this too. Both on 228 dapper and now on beta2 hardy. > > When I first get to the X axis screen, I cannot press forward unless I > first move my mouse into the main part of the window. Once I do this (I > do not even have to click), the forward button becomes enabled. Then I

Re: [Emc-users] Bug in stepconf?

hay i have an idea how about you bend your dumb ass over and let me fuck you in it and then im going to make you suck it off From: Leslie Newell To: Enhanced Machine Controller (EMC) Sent: Wednesday, April 8, 2009 1:56:47 PM Subject: Re: [Emc-users] Bug in st

Re: [Emc-users] Mini-mill Motors

On Wed, 2009-04-08 at 14:34 -0700, Kirk Wallace wrote: > On Wed, 2009-04-08 at 07:27 -0500, Ray Henry wrote: > > IMO a half horse is way overkill. I used 110 Inch Ounce steppers and > > 3/1 belt ratio with 5 TPI screws on a Grizz about that size years ago. > > Just to prove to myself that it could

Re: [Emc-users] Mini-mill Motors

On Wed, 2009-04-08 at 07:27 -0500, Ray Henry wrote: > IMO a half horse is way overkill. I used 110 Inch Ounce steppers and > 3/1 belt ratio with 5 TPI screws on a Grizz about that size years ago. > Just to prove to myself that it could be done. The down side was about > 30 IPM max rapid. > > Ray

Re: [Emc-users] Bug in stepconf?

If I run stepconf in 6.06 the Forward button works until I get to the X axis page then I have to move the mouse off the button then back on to get it to go to the next page. It was like that in 2.2 and is still the same in 2.3 beta and on 8.04. If you back up and go again it works as I expect

Re: [Emc-users] Mini-mill Motors

On Wed, 2009-04-08 at 11:36 -0500, Jon Elson wrote: ... snip > http://pico-systems.com/japservo.html > I don't know the rated power output of this motor, but it is WAY below > 200 W, maybe more like 50 W. > You won't get ito too much trouble with a slightly larger motor, but > 200-300 W (continuo

Re: [Emc-users] Mini-mill Motors

On Wed, 2009-04-08 at 09:05 -0400, John Guenther wrote: > They did one in 2008 at the Cabin Fever show using Fred > Smiths http://www.imsrv.com servo system and ball screws from KDN tool. > The servos are normally used on Sherline machines and the X2 mini mill > worked just fine and had very good

Re: [Emc-users] Bug in stepconf?

There is a gnome bug where if you disable a button then enable it, you need to move the mouse off of the button then back on before it will accept clicks. Les Michał Geszkiewicz wrote: > I read somewhere that this is GNOME bug not stepconf. > Here on dapper I have same buggy behaviour > > regar

Re: [Emc-users] Bug in stepconf?

Chris, I see this too. Both on 228 dapper and now on beta2 hardy. When I first get to the X axis screen, I cannot press forward unless I first move my mouse into the main part of the window. Once I do this (I do not even have to click), the forward button becomes enabled. Then I can move back a

Re: [Emc-users] Bug in stepconf?

I read somewhere that this is GNOME bug not stepconf. Here on dapper I have same buggy behaviour regards Michael On Wed, 08 Apr 2009 22:36:01 +0200, Peter blodow wrote: > Hello Chris, > since I am using the German version I don't exactly how the buttons are > named. The way to leave the mouse o

Re: [Emc-users] Bug in stepconf?

Hello Chris, since I am using the German version I don't exactly how the buttons are named. The way to leave the mouse over the button works only when going back. Peter Blodow At 20:52 08.04.2009, you wrote: >On Wed, Apr 08, 2009 at 06:11:51PM +0200, Peter blodow wrote: > > > When you go through

Re: [Emc-users] Bug in stepconf?

P.S.: I am using hardy (so does Alex Joni) so it may be different from dapper. P.Blodow Hello Chris, since I am using the German version I don't exactly how the buttons are named. The way to leave the mouse over the button works only when going back. Peter Blodow At 20:52 08.04.2009, you wrote

Re: [Emc-users] Bug in stepconf?

> On Wed, Apr 08, 2009 at 06:11:51PM +0200, Peter blodow wrote: > >> When you go through the pages to configure X, Y, Z etc., clicking on >> Continue has no effect unless you at least touched one (clicked into one) >> of the fill-in-boxes of that page. This behaviour is useless, and you >> can't >

Re: [Emc-users] EMC at NAMES 2009--banner & update

Hi, Dale. CDs =ARE= complete and sitting beside me, waiting for a 15-minute break when I can wrap'em in bubble-wrap, weigh the box, and get it up to the UPS drop box. On Tue, Apr 7, 2009 at 5:12 PM, Dale Grover wrote: > NAMES 2009 is a week and half away in Toledo, OH. (A few folks will > be d

Re: [Emc-users] Bug in stepconf?

On Wed, Apr 08, 2009 at 06:11:51PM +0200, Peter blodow wrote: > When you go through the pages to configure X, Y, Z etc., clicking on > Continue has no effect unless you at least touched one (clicked into one) > of the fill-in-boxes of that page. This behaviour is useless, and you can't > make m

Re: [Emc-users] ilowpass filter

Jon Elson wrote: > So, this just records the time of the LAST count, not ALL counts since > you read the encoder status last? Yes. >> My approach to the "ideal encoder counter" is to allocate the register >> space between counts and timestamp. Unfortunately there is no single >> split that i

Re: [Emc-users] ilowpass filter

John Kasunich wrote: > Jon Elson wrote: > >> Certainly does look nice, but you can't do this with a standard encoder >> counter. >> > > Define "standard counter". A position counter for a quadrature encoder. When asked, it reports position, and that is IT. No velocity of any sort. > Th

Re: [Emc-users] ilowpass filter

Peter C. Wallace wrote: > > > As you mentioned before, raising the sample rate alleviates some of these > problems. Especially for torque or voltage mode amps. 100 Hz might be OK for > a > velocity mode amplifier where most or all of the D term is handled in the > motor drive, but would create

Re: [Emc-users] emc2.3.0 beta2 - odd behavior with G64 P-

Jeff Epler wrote: > On Tue, Apr 07, 2009 at 10:29:51PM -0500, Jon Elson wrote: > >> I can't answer this, but I think we need a lot more info on what the >> G-code for these holes looks like. >> > > Please ignore my dumb response in that message, I *READ* it was for a plasma cutter and

Re: [Emc-users] Latest Axis lathe questions

Steve Blackmore wrote: > >>> Also when slowing down, spindle overshoots badly then comes back to >>> commanded speed. >>> >> The signal out of EMC isn't doing this, so you will have to look >> into how to fix it on whatever drive electronics you have. >> Sometimes there is a setting. >>

Re: [Emc-users] Mini-mill Motors

Kirk Wallace wrote: > I am looking into converting an X2 class mini-mill: > http://www.harborfreight.com/cpi/ctaf/Displayitem.taf?itemnumber=44991 > > I'd like to get a feel for the appropriate size for the axis motors. If > anyone has their X2 motor wattage and/or peek/constant torque specs > hand

Re: [Emc-users] USDigital encoders

On Wed, 2009-04-08 at 13:58 +, Tom wrote: > Kirk Wallace writes: > > > > Current pricing seems to be about $50 for each axis if you make your own > > disk hubs and sensor mounts. I have my encoders on the end of my 5TPI > > ballscrews, giving 5 pulses/1". > > > > Thanks Kirk

Re: [Emc-users] ilowpass filter

Tom wrote: > Jon Elson writes: > > - I just kind of feel my way and eventually get a > >> response I can live with, but I know it would be better with a bit more >> damping. But, if I turn D up any higher, it becomes unstable. There >> obviously is a phase shift somewhere in the system, I

Re: [Emc-users] Bug in stepconf?

Gentlemen, since I was using stepconfig a lot these weeks (!) I noticed a little feature that made frequent configuring of Z or A axis a little tedious. A friend of mine told me that it was still present at 2.3. which I haven't tested so far. When you go through the pages to configure X, Y, Z e

[Emc-users] Bug in stepconf?

Gentlemen, for a long time I was missing the familar singing or humming sound of stepper motors due to my using stepconfig - "test this axis" program for their setup. I learned that there are faults in it so the 5/4 beat can't be eliminated. Now I'm working with Axis, although it takes more time

Re: [Emc-users] ilowpass filter

Jon Elson wrote: > John Kasunich wrote: >> The software encoder counter generates its velocity output by looking >> at not only how many counts arrived, but _when_ they arrived (with base >> period time resolution). I'm pretty sure the latest hostmot2 driver >> does the same - in that case i

Re: [Emc-users] Latest Axis lathe questions

Steve Blackmore wrote: >On Tue, 7 Apr 2009 19:59:17 -0500, you wrote: > > >>On Wed, Apr 08, 2009 at 12:22:52AM +0100, Steve Blackmore wrote: >> >> >>>A couple of questions though, using halscope, pulses are clean and even, >>>but custom panel spindle speed indicator readout jumps about quite

Re: [Emc-users] ilowpass filter

On Wed, 8 Apr 2009, Jon Elson wrote: > Date: Wed, 08 Apr 2009 01:12:46 -0500 > From: Jon Elson > Reply-To: "Enhanced Machine Controller (EMC)" > > To: "Enhanced Machine Controller (EMC)" > Subject: Re: [Emc-users] ilowpass filter > > Sebastian Kuzminsky wrote: >> >> >> If the encoder count

Re: [Emc-users] USDigital encoders

Kirk Wallace writes: > > Current pricing seems to be about $50 for each axis if you make your own > disk hubs and sensor mounts. I have my encoders on the end of my 5TPI > ballscrews, giving 5 pulses/1". > Thanks Kirk. Is that the E6 model? Tom --

Re: [Emc-users] Mini-mill Motors

Hi John Thanks for the addition. I've seen Fred's Sherline conversions at a couple of shows. Several years ago now I set up a test mill for Abdul Rafik at Vital Systems using surplus Pittman printer motors and got 150 IPM from a stock Sherline. We didn't think the leadscrews would last very

Re: [Emc-users] emc2.3.0 beta2 - odd behavior with G64 P-

On Tue, Apr 07, 2009 at 10:29:51PM -0500, Jon Elson wrote: > I can't answer this, but I think we need a lot more info on what the > G-code for these holes looks like. The gcode that causes these problems can be as simple as G0 X??? Y??? G3 I1 F100 M2 i.e., a full circle of radius 1 wi

Re: [Emc-users] Mini-mill Motors

They did one in 2008 at the Cabin Fever show using Fred Smiths http://www.imsrv.com servo system and ball screws from KDN tool. The servos are normally used on Sherline machines and the X2 mini mill worked just fine and had very good rapid speeds. I don't remember exactly whet they were but it wa

Re: [Emc-users] Mini-mill Motors

IMO a half horse is way overkill. I used 110 Inch Ounce steppers and 3/1 belt ratio with 5 TPI screws on a Grizz about that size years ago. Just to prove to myself that it could be done. The down side was about 30 IPM max rapid. Rayh On Tue, 2009-04-07 at 23:28 -0700, Kirk Wallace wrote: > I

Re: [Emc-users] Latest Axis lathe questions

> > Stepconf did the configuration, I assume it just reads the index signal? You know what they say about "assuming".. :) I think to figure out a problem like this, you really should try to understand how things work (or are supposed to work). > Doesn't happen with Mach as it uses acceleration/d

Re: [Emc-users] Spindle Turns off on starting program?

Yup, just that. Regards, Alex > Yay! Does this also mean the spindle won't turn off when you touch off? > > Les > >> Another answer is that this (turning off the spindle when switching >> modes) is a goofy default that is now fixed in the upcoming EMC2.3. >> --

Re: [Emc-users] Spindle Turns off on starting program?

Yay! Does this also mean the spindle won't turn off when you touch off? Les > Another answer is that this (turning off the spindle when switching > modes) is a goofy default that is now fixed in the upcoming EMC2.3. > --

Re: [Emc-users] Latest Axis lathe questions

On Tue, 7 Apr 2009 19:59:17 -0500, you wrote: >On Wed, Apr 08, 2009 at 12:22:52AM +0100, Steve Blackmore wrote: >> >> A couple of questions though, using halscope, pulses are clean and even, >> but custom panel spindle speed indicator readout jumps about quite a >> bit? > >How are you generating