It is a very wierd problem which I don't understand.
I'm currently calibrating my printer and I have problem with Z axis.
I currently have a MixG1 printer with RAMPS and pololu drivers. My two Z axis motor are connected to two 4-pins under Z axis stepper driver. They are connected in parallel.
I' played with the trimpot a little bit, but this problem seems to be back after some movements (less than 100mm)
The same motor is always blocking after a while, it gets very hard to rotate, even by hand. The other one is quite fine and easy to rotate. When I manually turn the «hard» one, the other one tend to rotate too, like if it was receiving pulses. Both motors runs very cold, nothing to worry about temperatures.
What is wrong?
I'm currently calibrating my printer and I have problem with Z axis.
I currently have a MixG1 printer with RAMPS and pololu drivers. My two Z axis motor are connected to two 4-pins under Z axis stepper driver. They are connected in parallel.
I' played with the trimpot a little bit, but this problem seems to be back after some movements (less than 100mm)
The same motor is always blocking after a while, it gets very hard to rotate, even by hand. The other one is quite fine and easy to rotate. When I manually turn the «hard» one, the other one tend to rotate too, like if it was receiving pulses. Both motors runs very cold, nothing to worry about temperatures.
What is wrong?