[Emc-users] gcode inkscape plugin
Hi, I have patched the gcode generation plugin for inkscape, ( http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?InkscapeHowto ), in order to fix a bug that prevent the lift of the tool on the Z-axis while engraving a text. Here is the patched version http://daubau.it/log/wp-content/uploads/2008/02/gcode.py More information here http://daubau.it/log/una-fresatrice-a-controllo-numerico-cnc ( in italian language) . Fabrizio - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] resolver/encoder converter
The Analog Devices 2S2105 resolver to digital chip with encoder emulation shows a max latency of 125 us. It is supposed to track at 1000 r/s. These are about $20 chips and not the top of the line. HTH Dave On Feb 6, 2008, at 8:05 AM, Alex Joni wrote: These introduce a 50 ms delay in the feedback signal. Is this acceptable? I think, probably not. My question is this. Do I need to install encoders on the motors? Questions, thoughts, comments welcome. 50msec is waay too much, but reading the http://www.amci.com/pdfs/accessories/RD141S_rev_1.0.pdf I can't find it... are you sure it wasn't 50ns ? Regards, Alex -- --- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] plasma-thc-sim
Hi I'm new with EMC2. I'm interested about EMC2 and I'm trying to learn how it works, but now I have a problem where I will need a little help. Does plasma-thc-sim work for you? When I try to run it I always get joint 0 following error. I also get some realtime errors because I have not yet found proper configuration for my machine (even I have tried quite hard). I'm not sure but I think that this following error is not side effect of those realtime errors. Of course it is also possible that I operate the system in a wrong way. What I do is: - start EMC2 with plasma-thc-sim - release ESTOP - turn machine ON - push Home All - push Begin Execution After a few seconds I get that following error. I have tried to read all information what I have found about THC, but still I don't completely understand the operation. Can somebody give me a little advice. 1) what is meaning of Travel Height 2) how Z axis should be controlled in the G-code file? Does THC logic control Z axis totally so that there is no need for Z moves in G-code, only M3/M5 command are needed or how does it work. In the example file there are many Z moves and no M3/M5 commands. Is arc turned somehow off between cutting letters or not. So, as you see, I'm a little bit confused. Petri ps. with configuration sim/axis-mm (for example) everything seems to work fine, but at this time I'm especially interested about that plasma control system pps. I'm using version 2.2.3 installed from live CD - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Running on a G4 MAc (new world)
Hi Jason On Wednesday 06 February 2008 02:59, Jason Cox wrote: As i started this thread, i should put my hand up, but there are a few problems at the moment. I have just started uni (after 10 years) and I would need a guide for setting up a development environment on OSX. All you need is xcode which should be on your installation CD (or DVD), if not, you can easily download it from the Apple Developer's site at http://developer.apple.com/ - You'll probably need to create a user account first.. The xcode package provides all the tools and libraries needed to get started, even an IDE if you don't like the command line. Regards, Paul. - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] resolver/encoder converter
Gene Heskett wrote: On Wednesday 06 February 2008, Alex Joni wrote: These introduce a 50 ms delay in the feedback signal. Is this acceptable? I think, probably not. My question is this. Do I need to install encoders on the motors? Questions, thoughts, comments welcome. 50msec is waay too much, but reading the http://www.amci.com/pdfs/accessories/RD141S_rev_1.0.pdf I can't find it... are you sure it wasn't 50ns ? I doubt if its that fast. With a 5khz carrier, I'd assume it takes a full cycle to come up with an angle and then convert, and the angle will take .2 milliseconds if its done in a single full cycle of the carrier. Or do I not understand how these work? I've studied the Analog Devices units. They have a tracking PLL that attempts to track the velocity of the resolver. So, it doesn't quite do a complete conversion from scratch every cycle (or half-cycle) of the sensor excitation. It is more like it generates an estimate of position from the PLL and then refines the error. Also, using the AD chip, you can set the frequency to whatever you want. My guess is that AMTI clunker has a PIC micro with A/D in it, and not much else, and costs them $15 to make. I didn't see what Stuart had to pay for them. But, if that 50 ms lag is correct, they are of VERY limited usefulness. Jon - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] resolver/encoder converter
Message: 7 Date: Wed, 6 Feb 2008 18:05:51 +0200 From: Alex Joni [EMAIL PROTECTED] Subject: Re: [Emc-users] resolver/encoder converter To: Enhanced Machine Controller \(EMC\) emc-users@lists.sourceforge.net Message-ID: [EMAIL PROTECTED] Content-Type: text/plain; format=flowed; charset=iso-8859-1; reply-type=original These introduce a 50 ms delay in the feedback signal. Is this acceptable? I think, probably not. My question is this. Do I need to install encoders on the motors? Questions, thoughts, comments welcome. 50msec is waay too much, but reading the http://www.amci.com/pdfs/accessories/RD141S_rev_1.0.pdf I can't find it... are you sure it wasn't 50ns ? The 50 ms came from a conversation with Matt in tech support at AMCI. I wrote it down as he was saying it. He said the converter was developed in concert with Rockwell specifically to replace the servo amp I have with a different servo amp. The converter had too much delay to work in the application it was being developed for. I will probably try to return them if they will not work. Regards, Alex -- Message: 8 Date: Wed, 6 Feb 2008 08:22:52 -0800 From: Dave Engvall [EMAIL PROTECTED] Subject: Re: [Emc-users] resolver/encoder converter To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net Message-ID: [EMAIL PROTECTED] Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed The Analog Devices 2S2105 resolver to digital chip with encoder emulation shows a max latency of 125 us. It is supposed to track at 1000 r/s. These are about $20 chips and not the top of the line. HTH I will definitely check this out. thanks Stuart - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] Guy that sell sevomotors MADE IN CHINA on last year EMC2 show?
Hi I want to ask if anyone know phone number for guy from Chine that sell servomotors on last year EMC2 show at Cardinal Engineering. I think he can bring some bench top CNC machine made in China to be retrofitted and etc. Thank you Aram - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] plasma-thc-sim
On 6 Feb 2008 at 9:30, [EMAIL PROTECTED] wrote: Petri I'm building a cnc plasma machine at the moment... I get errors too when trying to run a file... If I come up with a solution I'll holler back at you... If you want to discuss plasma ideas feel free to e mail me. John Hi I'm new with EMC2. I'm interested about EMC2 and I'm trying to learn how it works, but now I have a problem where I will need a little help. Does plasma-thc-sim work for you? When I try to run it I always get joint 0 following error. I also get some realtime errors because I have not yet found proper configuration for my machine (even I have tried quite hard). I'm not sure but I think that this following error is not side effect of those realtime errors. Of course it is also possible that I operate the system in a wrong way. What I do is: - start EMC2 with plasma-thc-sim - release ESTOP - turn machine ON - push Home All - push Begin Execution After a few seconds I get that following error. I have tried to read all information what I have found about THC, but still I don't completely understand the operation. Can somebody give me a little advice. 1) what is meaning of Travel Height 2) how Z axis should be controlled in the G-code file? Does THC logic control Z axis totally so that there is no need for Z moves in G-code, only M3/M5 command are needed or how does it work. In the example file there are many Z moves and no M3/M5 commands. Is arc turned somehow off between cutting letters or not. So, as you see, I'm a little bit confused. Petri ps. with configuration sim/axis-mm (for example) everything seems to work fine, but at this time I'm especially interested about that plasma control system pps. I'm using version 2.2.3 installed from live CD - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Guy that sell sevomotors MADE IN CHINA on last year EMC2 show?
[EMAIL PROTECTED] wrote: Hi I want to ask if anyone know phone number for guy from Chine that sell servomotors on last year EMC2 show at Cardinal Engineering. I think he can bring some bench top CNC machine made in China to be retrofitted and etc. http://www.kelinginc.net/ Jon - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
