I have just built 4 picstep V4 20Mhz boards and the 4 axis interface by PMINMO.
I have all 4 working using a 35V supply and 2.8A powermaxII motors. I am using Turbocnc
I can run all 4 fine at low speeds but as I crank up the speed they run fine in one direction but loose steps and stop spinning all together in the opposite direction.
This is the same on all four boards I can get them running at up to 105 IPM in one direction before losing steps but only around 60 IPM in the opposite direction.
I have tried every combo of wiring up the steppers. I have tried in all step modes. I have tried a different computer and different software
all with the same results. I can get the motors to working well in both directions but only by changing the step active HI\LO option in Turbocnc but once again they will only run WELL in one direction.
Once I get these things working properly I can get my first CNC router table running so I am very eager to get this figured out. VERY frustrating :boxing:
Thanks guys