Well, here I am again.
After trying to make my robot dog walk, and it fell over and had a pretty hard impact, one of the leg servos is no longer working. The servo with the issue has somewhat more resistance to being turned by hand than the others, when powered off. The servo is unresponsive when the robot’s base program is running (All the other motors lock up, but this one can still be turned by hand fairly easily.)
My wiring is a bit too complex to explain here, but here’s the basic idea:
Pins 2-13 of the Arduino Mega are connected to the 12 servos, which are powered by a LiPo battery separate from the Arduino.
Pins 30-35 are connected to the RC receiver.
Pin 24 is connected to 5v through a piezo speaker and a resistor to limit the current
The RC receiver is powered by the Arduino’s 5v pin
I think it’s a wiring issue, given that my wires are often times pulled on as the robot moves.