My last circuit board for my EV showed up! Just gotta populate, program, and wire it. Slides in to the slot the transmission ECU vacated.

I'll 3D print an enclosure for it, but the tabs sticking out the side will protrude since they act like "rails", same as the ECU it's replacing.

This is really the last piece to the puzzle to really unlock the full potential of this project. It will read the pedal position in a more reliable way that I am now, so drive will be smoother, and it will also control the transmission so I can use both gears. It will completely transform the driving experience!

Finally, it will read the key position so that I don't need to use a laptop to start and stop the car.