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I found what the problem was. It seams that the pc was having a gound issue when I would start the spendle. I conected a wire from the computer case to the machine and that worked. Thank you for all...

I turned off the USB port power saving checked the cable and tried it again same thing uc100 not responding. I unhooked it from the breakout board and tried it and the blue light stayed on. I was...

I have been running my home built cnc router with a laptop with windows8 with no problems it has mach3 installed on it and a uc100 controller. I took older PC running windows7 64 bit installed mach3...