My team and I are creating a robot using 4 stepper motors with mecanum wheels and an Arduino Uno. The code appears to be correct, and the motors seem to run just fine on their own, but once we screw on the mecanum wheels they can no longer turn. If we unscrew the mecanum wheels until they are not at all gripping the motor shaft, they wheels will turn with the motors but then we have the issue of the wheels falling off. We are running out of time to complete this robot, and we are struggling with mobility right now due to the inconsistency of the motors with the wheels. Any ideas as to why they won't turn properly?
Can post code if needed. Motors do turn by hand.