Hi All,
I finished installing J2 and J3 stepper motors (Lots of work left). J1 and J3 turn smoothly, while J2 is not smooth and actually vibrates when being manually turned. I removed the motor and inspected the inside but nothing seems misaligned. My knowledge of stepper motors is certainly at the beginning phase so I'm not sure what to look for except via general observation.
Thoughts?
Hey Chris,
Your answer was correct. When the wire leads were taped together and shorted there was interference, which led to a rough ride within the stepper motor. Having fun building the kit with my students. Wish we could put one of these in all schools! Have a great weekend!