On Friday 06 November 2015 00:10:53 MC Cason wrote: > On 11/05/2015 09:31 PM, Gene Heskett wrote: > > On Thursday 05 November 2015 21:55:00 MC Cason wrote: > >> Gene, > >> > >> I uploaded some pictures to Flickr, to show you how I have mine > >> done: > >> https://www.flickr.com/photos/46689581@N03/albums/72157660780465122 > > > > Neat. But I'll need to come up with a more compact mounting for a > > bunch of them to run a tool changer. Perf-board likely will be > > about ideal but I'll need to find space on that size of perf-board > > for at least a 5 pack of those. I can still conserve I/O pins on a > > 5i25 by useing 3 bits as an address generator and 3 more for > > enable/step/dir. I don't see more than one motor moving at a time, > > but with conventional wiring, a 5 motor setup is 15 output pins. I > > think I can beat that down to 6 if only one motor at a time is to be > > moving. 3 to address which motor gets the signals, and 3 for > > enable,dir,step. All dir and step can be shared, but the 3 bit > > address only enables the one addressed. > > I don't have a tool changer, so my comment may not work, but why > not have LinuxCNC send a signal out to a microcontroller, let the > microcontroller do it's job, and then have the microcontroller send a > signal back to LinuxCNC to tell it when it's done? I do not consider > myself a programmer, but I'm still able to make the Arduino software > give me what I want. > > If a stock Arduino board doesn't have enough pins, the Teensy > series of boards have more pins available. For me, $20.00 for the > 3.2, and $12.00 for the LC, was fairly cheap, considering what other > boards on the market cost. Both of them use the Arduino software > (with addon sofware) as it's IDE. > https://www.pjrc.com/teensy/teensy31.html > https://www.pjrc.com/teensy/teensyLC.html
I've considered that approach, but its a new language to learn. But for a $20 bill, maybe worth the effort. > This is how the RepRap guys mount their boards: > http://reprap.org/wiki/A4988_vs_DRV8825_Chinese_Stepper_Driver_Boards > > The perf board is just for prototyping, and I'm a couple of mods > beyond the one in the pictures. When I'm finally satisfied, I will > have a few circuit boards made. I know two people here locally that > are interested in their own boards. $48.00 for 3 from OSH Park, or > $47.00 for 10 directly from China. Decisions, decisions... > > > But I'm going to be out of pocket for a bit, tomorrow I get the > > brakes redone on my GMC, If amazon manages to deliver Saturday, I'll > > be busy putting our local AM'er back on the air at full power. > > Monday I am scheduled for a pair of saddle block shots in whats left > > of my back, and if amazon doesn't deliver till Monday, I'll have to > > see if I can finish that transmitter after I get back from the > > shots. Might not be able to pull that off till after the shots have > > taken effect. I was informed I'd need a driver. Last time I drove > > myself home. But that was 2 years ago. As a friend was fond of > > saying, I'm not the man I once was, even once. ;-) > > > > Thanks, MC Cason. > > > > Cheers, Gene Heskett > > I know what you mean about having back problems. I've been > disabled for 14 years now, and live in constant pain. I bought all of > my machine tools to keep me from going crazy. Thanks, MC Cason Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
