For the last two weeks, the motor hasn't been doing exactly what it should be doing. The black wheel would turn for a couple degrees but then it seemed to get stuck and just bounce back a forth. We first went through the code printing the position of the motor and everything seemed to be working correctly on the serial monitor. When it would get stuck, it seemed like it usually happened at 180 degrees which is the maximum value the motor can reach.
After looking at the code, we decided to look at the motor itself. When the wheel began to wobble, applying the slightest pressure to the bottom of the outside of the wheel seemed to stop the wobbling and allowed the wheel to turn in either direction. After troubleshooting, it was discovered that the wheel was slightly off balance and when it turned just right, it began to wobble back and forth. (RESONANCE!)
To further test this issue, we put a pipe cleaner that was spiraled enough to sit on the wood and to reach the wheel so that it could apply slight pressure as the wheel turned. This seemed to work and proved that the wheel is slightly off-balance and may need supports to work properly.
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