Some of the CW 230 and CW 8060 micro stepping motor drivers coming from china have mislabeled CP and CW pin outs printed on top. CW+ and CW- should be CP+ and CP-. If you are wiring up these stepper drivers to a USB-CNC controller, and your motors will not work, swap the CP & CW wires. See picture below. It took me two days of trying all kinds of things to get the motors to step. I could not get my stepper drivers to work at all until I put the USB-CNC board on my scope . After I got through making sure the USB-CNC board was OK, and it was OK. I decided to try swapping the CP and CW wires to see what would happen. I plugged in the the CNC board and pressed the jog keys and it worked. I hope this will help anyone who may have had this problem. Cheers. GHB Attached files