I want to demo the BrickPi at our annual brick show in Christchurch but I don't seem to be able to get the motors to work. I am using a BrickPi 3 with a fresh image from the server. I tried to run the motors in scratch using the examples with no success. I then used the Python examples and I also have no success. The motor encoder is read and printed, but the motor cannot be switched on or off. I tried different ports and different motors. I also checked the voltages with the Python script. Given that the encoder information is coming through, the motor must attached correctly. The touch sensor works fine, so the motor python example should also work. But it does not. I have no idea what is going wrong.
Here is a video of the problem: https://youtu.be/_2lA2Hld_sE
Can you please help me quickly?