We’ve spent a lot of time this season confused by that Motor Port 1. It was always the wrong direction in our program. We went through lots of theories: the the Cortex Microcontroller was broke, the motor was wired wrong, our programming was wrong, etc. None seemed right, so we dealt with it. We inverted it and it worked.
We finally figured it out. Good news is that nothing is broken. Motor Port 1 flipped is flipped. On the attached image, the ‘notch’ on port 1 is opposite from the other ports.
So we’ve always been diligent about ‘red to red, black to black’. We also made sure all black wires were on the same side in the Cortex Ports. Now we know that, Port 1 should actually be flipped and be the ‘lone’ red wire on that side.
So, mystery solved! We thought that we’d share.