[Biggermens]

Hello Everyone

I got a Smoothstepper ESS and a cnc4pc C6 board, Got it all hooked up and everything seams to work ok,
I test the output, the voltage go up when i increase the speed and voltage go down when i decrees the speed

Then i test the pot of the spindle like they say in the manual P1(Gnd) to P3 (reference voltage) I get 4.09 Volts P1 to P2(wiper) I get nothing
I connect the P1 to gnd and P2 to the output of the C6 Board

Here is the problem i am having
with the spindle hooked up to the C6, i turn on the spindle in mach, it revs up a bit then stops, mach said it triggered a limit switch
Everything run fine with the pot and i placed all the wiring at the same place to see if that make noise and everything is good
It only stops when it is connected to the C6 Board


Anyone have any idea ??