It is not enough to hold the hand into the driving force of the motor line cutting step
Maybe your voltage is too high. The inner ring of the motor is burned again. If you make a circle, it's likely to go wrong. (I've touched it before.)What's more, the resistance in the machine tool is broken. The big resistance that connects the step is found in the line. (my 2 phase is so connected)Either the motor line is short circuited and the pulse electric can not control the motor normallyI only know that. I hope it will help you
It's the line of the stepping motor. If there is no problem, that is, the stepper motor burned, or the control panel of the stepper chip burned, this situation I have encountered
Can you move with your hand? If so, see if any of the wires are broken
