Problem motor serwo
Hi, I have a problem to buy an A3 engraver and the electronics do not work correctly. The servo motors do not move. Only after removing one motor will the second motor rotate properly.
The software was changed and it did not work.
I changed the electronike from another A3 engraver and then the engraver works fine.
Please answer what might be wrong with that electronics
Hi, i have the same problem.
Fixed it with Infos from this post:
I'm glad you fixed it, was the motor current too low?
For future reference the drive motors are not servo's they are stepper motors. A small hobby servo is used on the Egg and Draw machines to control the pen.
Servo's are generally DC motors with encoders (smooth operation with positional feedback).
Stepper motors are cheaper and do not have feedback so can "lose" steps. They jump in distinct steps (pulses), hence the name.