[Emc-users] Modbus Serial Card CNC4PC
Anyone use the modbus serial card with EMC2? It has 4 bit analog input that could tell me my arc voltage... Also the control pendant they sell could be used with the modbus card... Any drawbacks to using this? Thanks John - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. 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] Spindle speed control with cnc4pc board
On Tuesday 25 December 2007, ben lipkowitz wrote: On Mon, 24 Dec 2007, Geert De Pecker wrote: To do threading on the lathe is the end goal. I'm still in the development phase for the encoder bit. Want to make it myself (see part of drawing at http://users.skynet.be/gedp/FILES/index.html). Geert, There are some .ps files floating around that can be used to print your own optical encoders, and since postscript is a programming language they are relatively easily modified to do weird stuff such as in http://fennetic.net/pub/irc/encoder-panelized.ps however i find postscript can be hard to understand sometimes, so i rewrote it in python: http://fennetic.net/pub/irc/draw_encoder.py Humm, I must not have enough python installed, it runs quickly with no errors to stdout, and makes a 491 byte file that acroread can't open, no pages found. I used to think I knew something about ps. I'll try that too. But that isn't the type I had in mind, this is digitizing. Looks great for that though. :) hope this proves useful to someone -fenn Thanks Ben. -- 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) Certainly the game is rigged. Don't let that stop you; if you don't bet, you can't win. -- Robert Heinlein, Time Enough For Love - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. 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] Spindle speed control with cnc4pc board
A while back, I tried printing an encoder with my CAD program. I didn't get very good results. My laser printer's resolution, which is great for printing documents, was lousy for encoders. What resolution and how small a disk is possible with your method? Although, I suppose for a spindle, a larger size and lower resolution is more appropriate. I am still looking into a magnetic encoder for clean but oily environments. On Tue, 2007-12-25 at 06:19 +, ben lipkowitz wrote: On Mon, 24 Dec 2007, Geert De Pecker wrote: To do threading on the lathe is the end goal. I'm still in the development phase for the encoder bit. Want to make it myself (see part of drawing at http://users.skynet.be/gedp/FILES/index.html). Geert, There are some .ps files floating around that can be used to print your own optical encoders, and since postscript is a programming language they are relatively easily modified to do weird stuff such as in http://fennetic.net/pub/irc/encoder-panelized.ps however i find postscript can be hard to understand sometimes, so i rewrote it in python: http://fennetic.net/pub/irc/draw_encoder.py hope this proves useful to someone -fenn -- Kirk Wallace (California, USA http://www.wallacecompany.com/machine_shop/ Hardinge HNC lathe, Bridgeport mill conversion, doing XY now, Zubal lathe conversion pending) - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. 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] Fw: EMC ignoring G2 codes
On Tue, Dec 25, 2007 at 09:17:49PM +0200, Alex Joni wrote: I only forward the email because the original post was too big to fit on the list, I removed the attached image, and put it up at: http://imagebin.org/12581 It will only be there for a couple of days though.. Thanks Alex! This apparent Z level sensitivity is interesting. The machine boundaries are set at (X -0.01, 6.67), (Y -2.73, 0.01), (Z -6.78, 0.01) putting the home origin in the top left upper corner. The part (G54) is then zeroed in absolute coord (X2.9361, Y-1.5052, Z-2.1691). All the tool paths appear well within the boundaries and I can see no logical reason for this dependency. I've restarted the program a number of times during these investigations and with the same z zero the errant behaviour is repeatable. I used exactly these values and still couldn't reproduce it. If it is repeatable right now on your system, would you tar up your whole configuration directory and send it to me please. The exact G54 offsets etc. will be preserved in the var file. - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. 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] Spindle speed control with cnc4pc board
I would feel confident printing 256 lines on a 2 inch diameter encoder, with my 600 dpi HP laserjet 1018, but I haven't tried it out with a sensor yet. At 512 lines, the spacing between lines starts to look uneven. A 7 inch disc with 1024 lines looks pretty good. Kinko's has 1200 dpi laser printers... Here is a sample output for anyone who has trouble running the python program: (60mm dia 256 lines) http://fennetic.net/pub/irc/encoder.pdf I'd be happy to run any set of parameters, just ask. On Tue, 25 Dec 2007, Kirk Wallace wrote: A while back, I tried printing an encoder with my CAD program. I didn't get very good results. My laser printer's resolution, which is great for printing documents, was lousy for encoders. What resolution and how small a disk is possible with your method? Although, I suppose for a spindle, a larger size and lower resolution is more appropriate. I am still looking into a magnetic encoder for clean but oily environments. On Tue, 2007-12-25 at 06:19 +, ben lipkowitz wrote: On Mon, 24 Dec 2007, Geert De Pecker wrote: To do threading on the lathe is the end goal. I'm still in the development phase for the encoder bit. Want to make it myself (see part of drawing at http://users.skynet.be/gedp/FILES/index.html). Geert, There are some .ps files floating around that can be used to print your own optical encoders, and since postscript is a programming language they are relatively easily modified to do weird stuff such as in http://fennetic.net/pub/irc/encoder-panelized.ps however i find postscript can be hard to understand sometimes, so i rewrote it in python: http://fennetic.net/pub/irc/draw_encoder.py hope this proves useful to someone -fenn - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. 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] Additional I/O Modbus card.
Hi, Just a quick not before I head bush for the Christmas camping trip. For additional I/O via Modbus have a look at the ModIO. It has discrete inputs and outputs, analog inputs, a 20x4 character LCD interface, plus a few other interfaces. http://homanndesigns.com/store/index.php?main_page=product_infocPath=2products_id=4 Currently I have been adding toolchanger modules including one for the EMCO toolchanger and one for a Hardinge toolchanger. Cheers, Peter. -- -- Web: www.homanndesigns.com email: [EMAIL PROTECTED] Phone: +61 421 601 665 www.homanndesigns.com/ModIO.html - Modbus Interface Unit www.homanndesigns.com/DigiSpeedDeal.html - DC Spindle control www.homanndesigns.com/TurboTaig.html - Taig Mill Upgrade board - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. 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] Spindle speed control with cnc4pc board
Good try. KPR is a photoresist made by Kodak. It is good enough to do wafers. It needs reasonably energetic UV to polymerize and then toluene to dissolve off the non-polymerized part for etching. D On Dec 25, 2007, at 4:15 PM, Kirk Wallace wrote: KPR? Kentucky Paranormal Research Kawartha Pine Ridge District Public School Board On Tue, 2007-12-25 at 15:42 -0800, Dave Engvall wrote: If anyone wants to etch a disc I can probably find an 30 mL or so of KPR. For best resolution make a 4X image and then photoreduce 4X on to film and use that to expose the KPR. It makes beautiful circuit boards that way. Dave Another thought that comes to mind is that, when I was looking into making my own encoders, my design used a disk and two masks. The masks were a portion of the disk placed one half line width apart on the disk, such that one or the other went black at half line intervals. This allows you to have a large sensing area, and average out disk image errors. This doesn't account for the index though. I guess you would need a separate short lined section and another mask. -- Kirk Wallace (California, USA http://www.wallacecompany.com/machine_shop/ Hardinge HNC lathe, Bridgeport mill conversion, doing XY now, Zubal lathe conversion pending) -- --- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. 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 2005. 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] Spindle speed control with cnc4pc board
Dave Engvall wrote: If anyone wants to etch a disc I can probably find an 30 mL or so of KPR. KPR is abominable to work with. I have DuPont Riston dry film photoresist. I have laminated it onto .005 and .003 brass shim stock with my dry film laminator machine. It has heated Silicone-coated rollers that press the film onto the substrate. I have to shim the bottom side with cardboard as the machine was set for .062 PC board material. I make two mirror-image films on my photoplotter and align them on a light box before wrapping them around the laminated shim stock, then expose, develop and etch like a PC board. I still get some undercutting, my ferric chloride may be worn out. I've been using this to make solder paste stencils for SMT circuit boards, but one could make an encoder with similar technology. Jon - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. 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] Spindle speed control with cnc4pc board
Kirk Wallace wrote: KPR? Kentucky Paranormal Research Kawartha Pine Ridge District Public School Board Kodak Photo Resist, a Xylene-based organic photo resist that is hardened by exposure to UV light. It is very old school and not only requires nasty chemicals, but is quite fragile. The aqueous-based developer for Riston photo resist is washing soda, and the stripper is a weak lye solution, I get both on my hands without harm. Jon - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. 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
