I recently bought a JD ezrobot and I have been trying to make it work properly for a few days now.
I built the robot twice already (with the motors facing the right way) and have connceted the wires, again, twice.
I also calibrated the motors, as said in the calibrating lesson so basically I did every thing I could.
Now, I have encountered a few problems:
1. There is an almost permanent buzzing sound coming probably from the motors. Sometimes it stops, but most of the time it keeps on going.
2. JD seems not to walk straight (truns slowly to his right). It walks good backwards though.
If anyone could give me a helping hand and explain where I went wrong, I will be really apreciating it.
Here is the video: