Has anyone had trouble with the play in the J4 motor. There is about a 3 to 4 degree slop in that axis that is in the motor. I can turn the axis by hand and the motor spins about 3 to 4 degrees. The gear and belt are good but motor itself rotates. Any suggestions?
I read the build manual for the AR3 robot and found that during the build for the control box there is nowhere in the BOM does it mention the 5v PSU used in the build. Any specific PSU you'd recommend or any 5v PSU will work?