I'm in the process of building my first machine with Mach and a Parallel port. I built one other machine running grbl. I have a issue with loosing steps on one of my dual x axis motors, so i wanted to take a look at the signal going to the drivers.
Notice the missed pulses..and the noise.. I can tell that both axis are missing steps, but i dont really have a good way to compare that one has x more than the other. (i wonder if the arduino interrupts would be fast enough to sample the pulses)
Im using the amazon special SainSmart BOB
I also looked a bit closer and found that they were not in sync. Not out by too much about 1.5us but im not sure how close they should be either.
So fellow CNC'er i ask you all for advice, what should i be looking at next, could it be a BOB issue, PC issue... Should i just bite the bullet and buy a smooth stepper board?
Mods, i looked for a troubleshooting thread but came up empty handed, if this needs to be moved, please do so.