My roli is not rolling. All arm and camera servos work fine, camera visual is fine. The robot can do the dance, left/right-wave, and clap sequences. Robot plays music and shows camera video on EZ Builder screen. I just can't get the tracks to move. Robot is not responding at all to the HBridge PWM arrow controls.
1) I checked the H-Bridge wiring to the EZ-B v4 at least six times.
2) I checked the internal H-Bridge wiring. It is exactly as shown in the tutorial photo. Push button is in the down position, VCC and ground are wired properly and the 20A fuse is fine (checked continuity-good)
3) Wifi connection to ARC is fine
Totally stumped now. Need help!