I just got a GoPiGo yesterday for Christmas. After putting it together and running basic_test_all.py, one motor seems to run slower than the other and sometimes stalls out and doesn’t move at all. I can also sometimes see the motor speed “pulse” (it’ll speed up and then slow down) as if its trying to catch up.
Looking at the GoPiGo from the top, it is the left motor. I have tried switching the connections of the left and right motors and the problem moves to the right motor so it doesn’t look like a motor problem. In addition, I only see the problem when moving forward or backwards and not when turning. This might imply a power issue?
I even see the problem when if I disconnect the right motor and just have the “slower” motor running.
I’ve seen the problem from the first time I ran basic_test_all and I’m using fresh batteries.
Any other suggestions on things to try or possible causes?