[Emc-users] gcode variables question
Hello everyone, I have question about saving variables in *.var file after command.abort() If I abort program in a loop within variables are updated they are writen to file with values that they have after ending the loop. f.e. loop executed 10 times, abort() in 5 interaction, index variable was 5 but value that was writed to file was 10. Is this a correct behavior? Thanks Michal Poukładaj rozrzucone zabawki i zdobądź punkty! "Dziewczyńskie porządki" - nowa, niesamowita gra logiczna - Kliknij: http://klik.wp.pl/?adr=http%3A%2F%2Fadv.reklama.wp.pl%2Fas%2Fd74.html&sid=1021 - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] gcode variables question
Yes, that is behavior you should expect from emc. Except in a few special cases, the code in the .ngc file may be interpreted in advance, even up to the end of the file. Things like variable assignments, modal g- and m- settings, and the like may reflect the state of the interpreter hundreds of lines later than the one that was executing when you hit abort. This is a consequence of the way emc "queues up" many motions so that the real-time code is almost always guaranteed to have motion information available. Jeff - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Getting Hal prompt back? Also auto dialup?
Thanks to all who have replied and provided much appreciated help in overcoming the challenges I have encountered thus far in my EMC2 adventures. I have purchased an Actiontec 56K external modem to bypass the problems presented by my Winmodem and now have my dialup working. By the way is there any way of getting an automatic dialup when I open Firefox? Currently I must do System-Administration-Networking, select Modem, then select Activate to get it to dialup. And when I close the browser I must go through the same process and select Deactivate to get it to hang up the phone line. Jack Ensor Quoting Jeff Epler <[EMAIL PROTECTED]>: > If you get the message "realtime already running", then issue: > halcmd unload all > realtime stop > the second command may need a path: > /etc/init.d/realtime stop > > On my system (ubuntu 6.06, emc2.1-sim package, urxvt terminal) closing a > terminal window where halrun is running doesn't lead to any problems. - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Getting Hal prompt back? Also auto dialup?
Hello Jack Glad to hear you got connected. I've tried using the dial on demand stuff but have never gotten it to work for me. It seems to want to connect all the time. BTW those Ubuntu folk that wrote that widget have no clue about dialup. Yes it will fire up and close down a connection but it is not at all state based so if the dialup connection goes away it hasn't got a clue. Rayh On Fri, 2007-02-16 at 08:56 -0500, [EMAIL PROTECTED] wrote: > Thanks to all who have replied and provided much appreciated help in > overcoming > the challenges I have encountered thus far in my EMC2 adventures. > > I have purchased an Actiontec 56K external modem to bypass the problems > presented by my Winmodem and now have my dialup working. > > By the way is there any way of getting an automatic dialup when I open > Firefox? > Currently I must do System-Administration-Networking, select Modem, then > select > Activate to get it to dialup. And when I close the browser I must go through > the > same process and select Deactivate to get it to hang up the phone line. > > Jack Ensor > > Quoting Jeff Epler <[EMAIL PROTECTED]>: > > > If you get the message "realtime already running", then issue: > > halcmd unload all > > realtime stop > > the second command may need a path: > > /etc/init.d/realtime stop > > > > On my system (ubuntu 6.06, emc2.1-sim package, urxvt terminal) closing a > > terminal window where halrun is running doesn't lead to any problems. > > > > > - > Take Surveys. Earn Cash. Influence the Future of IT > Join SourceForge.net's Techsay panel and you'll get the chance to share your > opinions on IT & business topics through brief surveys-and earn cash > http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV > ___ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Hardware step generator for 5I20
On Thu, 15 Feb 2007, Jon Elson wrote:
_snip__
>>
> I had to go through all the same on my stepper controller. It isn't all
> that hard. Especially
> because direction reversals are always going to happen at low speeds, so
> a 20 us delay
> of the first step in the new direction is not likely to make a motor
> lose sync.
>
> Jon
Yes, thats usually the case but I have some really crappy Compumotor drivers
that require 125 uSec! Especially bad since they are 256 uStep/Step drives...
One simple way that might work for decent drives is to punt and only update
DIR on the opposite DDS edge from the step edge.
>
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Mesa Electronics
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Re: [Emc-users] Hardware step generator for 5I20
On Thu, 15 Feb 2007, John Prentice wrote:
> Date: Thu, 15 Feb 2007 19:07:44 -
> From: John Prentice <[EMAIL PROTECTED]>
> Reply-To: "Enhanced Machine Controller (EMC)"
>
> To: "Enhanced Machine Controller (EMC)"
> Subject: Re: [Emc-users] Hardware step generator for 5I20
>
> Hi
>
> From: <[EMAIL PROTECTED]>
>> "Peter C. Wallace" <[EMAIL PROTECTED]> wrote:
>>
>>
>> On the step/dir side: some drives require setup and/or hold times for the
>> dir line with respect to the step line. Others have minumum step pulse
>> lengths. Do the generators support this? Min pulse length isn't that
>> hard,
>> but setup and hold time can be a pain.
>>
>> Example: You were running along at +10 steps/sec, then you switch to -10
>> steps/sec. 99.999% of the time that is fine. But if you make the change
>> a microsecond after the DDS has generated an "up" step, it will want to
>> generate a "down" step a microsecond later. (The DDS accumulator will
>> have only added a tiny amount, so once you switch directions, it will only
>> have to subtract a tiny amount.) The HAL software stepgen has more code
>> (crufty code at that) to ensure setup and hold times than is required for
>> the DDS itself.
>
> You probably have this in hand but I grappled with it a while ago. The
> project never got into production but I did lots of 'scope tests and I think
> the module works properly in the file at:
>
> www.castlewoodconsultants.com/Misc/PulseGen.v
>
> It has a simple pulse generator and a ShapeSetupHold module that enforces
> times defined in two registers.
>
> HTH
Thanks, looks about like what I was imagining and probably some things I
missed...
>
> John Prentice
>
>
>
>
>
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Re: [Emc-users] Auto dialup?
Well I think I have found a more convienient way of handling the dialup. After going through the activation procedure, after closing the browser I just turn off the modem power. When I want to go on line I restore the power to the modem and shortly thereafter it begins dialing in. Another convienience I found. To get numlock enabled on boot add the following to the /etc/Xll/xinit/xinitrc file: . /usr/bin/numlockx on I had to go to sudo to do this. But now numlock is on when I boot up like I am used to. Jack Ensor Quoting Ray Henry <[EMAIL PROTECTED]>: > > Hello Jack > > Glad to hear you got connected. I've tried using the dial on demand > stuff but have never gotten it to work for me. It seems to want to > connect all the time. BTW those Ubuntu folk that wrote that widget have > no clue about dialup. Yes it will fire up and close down a connection > but it is not at all state based so if the dialup connection goes away > it hasn't got a clue. > > Rayh > > > On Fri, 2007-02-16 at 08:56 -0500, [EMAIL PROTECTED] wrote: > > Thanks to all who have replied and provided much appreciated help in > overcoming > > the challenges I have encountered thus far in my EMC2 adventures. > > > > I have purchased an Actiontec 56K external modem to bypass the problems > > presented by my Winmodem and now have my dialup working. > > > > By the way is there any way of getting an automatic dialup when I open > Firefox? > > Currently I must do System-Administration-Networking, select Modem, then > select > > Activate to get it to dialup. And when I close the browser I must go > through the > > same process and select Deactivate to get it to hang up the phone line. > > > > Jack Ensor > > > > Quoting Jeff Epler <[EMAIL PROTECTED]>: > > > > > If you get the message "realtime already running", then issue: > > > halcmd unload all > > > realtime stop > > > the second command may need a path: > > > /etc/init.d/realtime stop > > > > - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] Home Made Encoder Ideas
This may be off topic, but due to the open source nature of linux and EMC, I'll take a chance. I have been trying to figure out a method that a typical EMC user could use to make encoders. One method might be to use Lighscribe to burn a rotary scale image to a CDR disk, but cd's are reflective and practical encoders need to be transmissive. Maybe an emulsion used for circuit board etching could be used on a clear CDROM? Two disks would be needed, one for the scale and another for a mask. Another thought is that if a CDRW laser assembly could be modified to scan a stationary target, you could apply the magic CDR coating to a substrate and then use the CDRW scanner to write and read absolute position data to a rotary or linear scale. Sort of like the helical scan for magnetic tape used for video or data backup. The main idea is to trade effort for cost in the pursuit of accurate position feedback for EMC motion control. Any thoughts on this? Kirk - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] Hal command failure
In going through the Hal tutorial again in paragraph 2.3.3 "Making realtime code run" after entering the command: loadrt threads name1=test-thread period=100 I get the following: insmod: error inserting '/usr/realtime-2.6.15-magma/modules/emc2/thread.ko'; -1 Unknown symbol in module HAL:6: ERROR: systemv failed, returned 1 HAL:6: ERROR: insmod failed, returned -1 I didn't get this the first time I went through the tutorial. Appearently something needs to be reset. Any ideas on this? Jack Ensor - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Hal command failure
[EMAIL PROTECTED] wrote: >In going through the Hal tutorial again in paragraph 2.3.3 "Making realtime >code >run" after entering the command: > >loadrt threads name1=test-thread period=100 > > That should be period1, not period. - Steve - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Home Made Encoder Ideas
> One method might be to use Lighscribe to burn a rotary scale image > to a > CDR disk, but cd's are reflective and practical encoders need to be > transmissive. Maybe an emulsion used for circuit board etching could > be > used on a clear CDROM? Two disks would be needed, one for the scale > and > another for a mask. well, if you're already acustomed to lightscribe disks, look at the inside of the disk. You'll see markings that are perfect for an encoder, you just need to find (mouse?) 2 optos to work with that. The markings are pretty visible in this picture I took: http://dsplabs.cs.utt.ro/~juve/dropbox/lightscribe/IMG_9645.JPG Regards, Alex - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Hal command failure
Also forgot to mention that when the command show param is issued, I only see siggen.0.update.time siggen.0.update.tmax I don't see the following parameters: siggen.0.amplitude siggen.0.frequency siggen.0.offset Jack Ensor - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Hal command failure
You're right, Steve. It worked when I entered the command correctly. Thanks. Jack Ensor Quoting Stephen Wille Padnos <[EMAIL PROTECTED]>: > [EMAIL PROTECTED] wrote: > > >In going through the Hal tutorial again in paragraph 2.3.3 "Making realtime > code > >run" after entering the command: > > > >loadrt threads name1=test-thread period=100 > > > > > That should be period1, not period. > > - Steve - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Hal command failure
When issuing the command save all saved.hal I get: HAL:18: Can't open 'save' destination 'saved.hal' What needs to be done now? Jack Ensor - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Hal command failure
you want to issue: halcmd save all > saved.hal Also make sure you're in a folder where you have write access (or use a full path for the filename). Regards, Alex - Original Message - From: <[EMAIL PROTECTED]> To: "Enhanced Machine Controller (EMC)" Sent: Friday, February 16, 2007 11:38 PM Subject: Re: [Emc-users] Hal command failure > When issuing the command > > save all saved.hal > > I get: > > HAL:18: Can't open 'save' destination 'saved.hal' > > What needs to be done now? > > Jack Ensor > > - > Take Surveys. Earn Cash. Influence the Future of IT > Join SourceForge.net's Techsay panel and you'll get the chance to > share your > opinions on IT & business topics through brief surveys-and earn cash > http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV > ___ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > -- > No virus found in this incoming message. > Checked by AVG Free Edition. > Version: 7.5.441 / Virus Database: 268.18.0/689 - Release Date: > 15.2.2007 17:40 > > - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Home Made Encoder Ideas
You can get reflective optocouplers as well as transmissive ones, although using a disk as you describe it might require an analog comparator on the front end to clean up the signal. Transmissive is easier, since the only linear part is at the edge of the openings. You can get reflective optocouplers from both mouser.com and and digikey.com. Javid - Original Message - From: "Alex Joni" <[EMAIL PROTECTED]> To: "Enhanced Machine Controller (EMC)" Sent: Friday, February 16, 2007 3:17 PM Subject: Re: [Emc-users] Home Made Encoder Ideas >> One method might be to use Lighscribe to burn a rotary scale image >> to a >> CDR disk, but cd's are reflective and practical encoders need to be >> transmissive. Maybe an emulsion used for circuit board etching could >> be >> used on a clear CDROM? Two disks would be needed, one for the scale >> and >> another for a mask. > > well, if you're already acustomed to lightscribe disks, look at the > inside of the disk. > You'll see markings that are perfect for an encoder, you just need to > find (mouse?) 2 optos to work with that. > > The markings are pretty visible in this picture I took: > http://dsplabs.cs.utt.ro/~juve/dropbox/lightscribe/IMG_9645.JPG > > Regards, > Alex > > > - > Take Surveys. Earn Cash. Influence the Future of IT > Join SourceForge.net's Techsay panel and you'll get the chance to share > your > opinions on IT & business topics through brief surveys-and earn cash > http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV > ___ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Home Made Encoder Ideas
I think mice parts a alex has mentioned are the cheapest. lawrenceG has done some extensive testing http://members.shaw.ca/swstuff/mouse.html I have played with this also - http://www.electronicsam.com/images/KandT/servostart/Fastermouse.png They work very well. My limit at the time was how fast the computer could count. We ended up going with usdigital parts - wheel and sensor as you can get both for under $50 http://www.electronicsam.com/images/KandT/servostart/Encoder.JPG sam On Fri, 16 Feb 2007 13:03:06 -0800 Kirk Wallace <[EMAIL PROTECTED]> wrote: > This may be off topic, but due to the open source nature > of linux and > EMC, I'll take a chance. > > I have been trying to figure out a method that a typical > EMC user could > use to make encoders. > > One method might be to use Lighscribe to burn a rotary > scale image to a > CDR disk, but cd's are reflective and practical encoders > need to be > transmissive. Maybe an emulsion used for circuit board > etching could be > used on a clear CDROM? Two disks would be needed, one for > the scale and > another for a mask. > > Another thought is that if a CDRW laser assembly could be > modified to > scan a stationary target, you could apply the magic CDR > coating to a > substrate and then use the CDRW scanner to write and read > absolute > position data to a rotary or linear scale. Sort of like > the helical scan > for magnetic tape used for video or data backup. > > The main idea is to trade effort for cost in the pursuit > of accurate > position feedback for EMC motion control. > > Any thoughts on this? > > Kirk > > > - > Take Surveys. Earn Cash. Influence the Future of IT > Join SourceForge.net's Techsay panel and you'll get the > chance to share your > opinions on IT & business topics through brief > surveys-and earn cash > http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV > ___ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Home Made Encoder Ideas
A quick search on Froogle for "lightscribe drive" and I found a number of drives in the price range of $25 USD. Since the index marks on the Lightscribe disk are in a separate region of the disk I think they are read by a separate sensor. In other words it should not be hard to convert a drive into an encoder if you do not mind sacrificing a drive for that purpose and have the soldering skills. You might still need to do some signal conditioning, depending on where you tap into the sensors. This is an interesting idea. If I get time I'll play with it some and post my results. Javid - Original Message - From: "Alex Joni" <[EMAIL PROTECTED]> To: "Enhanced Machine Controller (EMC)" Sent: Friday, February 16, 2007 3:17 PM Subject: Re: [Emc-users] Home Made Encoder Ideas >> One method might be to use Lighscribe to burn a rotary scale image >> to a >> CDR disk, but cd's are reflective and practical encoders need to be >> transmissive. Maybe an emulsion used for circuit board etching could >> be >> used on a clear CDROM? Two disks would be needed, one for the scale >> and >> another for a mask. > > well, if you're already acustomed to lightscribe disks, look at the > inside of the disk. > You'll see markings that are perfect for an encoder, you just need to > find (mouse?) 2 optos to work with that. > > The markings are pretty visible in this picture I took: > http://dsplabs.cs.utt.ro/~juve/dropbox/lightscribe/IMG_9645.JPG > > Regards, > Alex > > > - > Take Surveys. Earn Cash. Influence the Future of IT > Join SourceForge.net's Techsay panel and you'll get the chance to share > your > opinions on IT & business topics through brief surveys-and earn cash > http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV > ___ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Home Made Encoder Ideas
I just bought a drive with Lightscribe and I didn't bother to look at the CD's that came with it. It looks like there are about 400 lines per rev. and 80 lines per inch. I was hoping for a 2000 lines per rev. class design. Googling got me a link to Agilent's AEDR-8300 reflective sensor. My first guess is that 80 lines per inch is the maximum resolution for this sensor. Another guess is that they are using geewiz interpolation to get the resolution they need for Lightscribe. Kirk On Fri, 2007-02-16 at 23:17 +0200, Alex Joni wrote: > > One method might be to use Lighscribe to burn a rotary scale image > > to a > > CDR disk, but cd's are reflective and practical encoders need to be > > transmissive. Maybe an emulsion used for circuit board etching could > > be > > used on a clear CDROM? Two disks would be needed, one for the scale > > and > > another for a mask. > > well, if you're already acustomed to lightscribe disks, look at the > inside of the disk. > You'll see markings that are perfect for an encoder, you just need to > find (mouse?) 2 optos to work with that. > > The markings are pretty visible in this picture I took: > http://dsplabs.cs.utt.ro/~juve/dropbox/lightscribe/IMG_9645.JPG > > Regards, > Alex - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Home Made Encoder Ideas
There are different versions of that sensor, one of which has a 75 line/in resolution. The highest resolution they make is 180 line/in. - Original Message - From: "Kirk Wallace" <[EMAIL PROTECTED]> To: "Enhanced Machine Controller (EMC)" ; "Alex Joni" <[EMAIL PROTECTED]> Sent: Friday, February 16, 2007 4:36 PM Subject: Re: [Emc-users] Home Made Encoder Ideas >I just bought a drive with Lightscribe and I didn't bother to look at > the CD's that came with it. It looks like there are about 400 lines per > rev. and 80 lines per inch. I was hoping for a 2000 lines per rev. class > design. Googling got me a link to Agilent's AEDR-8300 reflective sensor. > My first guess is that 80 lines per inch is the maximum resolution for > this sensor. Another guess is that they are using geewiz interpolation > to get the resolution they need for Lightscribe. > > Kirk > > On Fri, 2007-02-16 at 23:17 +0200, Alex Joni wrote: >> > One method might be to use Lighscribe to burn a rotary scale image >> > to a >> > CDR disk, but cd's are reflective and practical encoders need to be >> > transmissive. Maybe an emulsion used for circuit board etching could >> > be >> > used on a clear CDROM? Two disks would be needed, one for the scale >> > and >> > another for a mask. >> >> well, if you're already acustomed to lightscribe disks, look at the >> inside of the disk. >> You'll see markings that are perfect for an encoder, you just need to >> find (mouse?) 2 optos to work with that. >> >> The markings are pretty visible in this picture I took: >> http://dsplabs.cs.utt.ro/~juve/dropbox/lightscribe/IMG_9645.JPG >> >> Regards, >> Alex > > > > - > Take Surveys. Earn Cash. Influence the Future of IT > Join SourceForge.net's Techsay panel and you'll get the chance to share > your > opinions on IT & business topics through brief surveys-and earn cash > http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV > ___ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Hal command failure
On Fri, Feb 16, 2007 at 04:20:23PM -0500, [EMAIL PROTECTED] wrote: > Also forgot to mention that when the command show param is issued, I only see > siggen.0.update.time > siggen.0.update.tmax > > I don't see the following parameters: > siggen.0.amplitude > siggen.0.frequency > siggen.0.offset These three were changed into pins during the development cycle, but the documentation apparently wasn't updated. Someone probably needs to actually re-record all the sample sessions in the documentation so that they match the current implementation... any volunteers? Jeff - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
