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Help Needed From the CNC Guys
75Plus:
--- Quote from: vtsteam on December 23, 2014, 09:11:22 PM ------ or is it like a clock signal generator, to get around the lag problems with windows......??
--- End quote ---
This is the stated reason Steve, Windows lag due to Windows multitasking during operation.
vtsteam:
Well Mach uses software methods to get around the latency problem and drives the controllers directly, as Swarfer was saying. That's if you use Windows.
Another, more rudimentary possibility is to use TurboCNC under DOS if your computer is old enough to run DOS. DOS avoids most of the lag problems and the interrupts are set to favor the CNC program.
I used to use that, but switched to Linux since I use that as my everyday OS.
I use LinuxCNC under Ubuntu on a dedicated computer. LinuxCNC gets around the lag problem (with a suitable computer -- some aren't) by using a special Real Time Linux kernel. The program also includes a latency test program to check if your computer is suitable. You can get LiveCD versions of LinuxCNC that don't require installing to your hard drive (at least to test it out).
But most people in the hobby world seem to use Mach.
vtsteam:
75Plus, maybe you have an intact Flashcut system after all.
Check to see if you have anything connected between pins 2 and 6 of the MBC10641's -- that would be the pulse generator. Doesn't seem like it would be a very complicated circuit -- it's just a clock.
Swarfing:
These really do look like typical drivers, the latest ones according to the site are mains input. The clock generator they refer to i believe is just what the resolution (microsteps) are set to, this would be done from Switch one and stepper current from the VR. The parallel connector is just standard bi directional setup so would just plug in and give one of the freebies a go. Nothing to lose and would give a starting point to work from.
vtsteam:
Swarfing, should be possible. Also If it does have a hardware clock signal already, can't Mach can work with that too.?
Pretty sure LinuxCNC can, as well, so either way, it looks do-able.
I think a hardware clock signal is better than software generated, if the generator is still there.
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