Programming Puzzle

[Ether]

Originally Posted by baronep

I think you misunderstand. If I was just using a simple comparator like > or < between setpoint and the analog input, and the cannon overshot past the wraparound, how do i force the cannon to go backwards instead of continuing another complete rotation to get back to the setpoint?

I understood you perfectly clearly. You need to add code to detect zero crossings. You do that with rate checks. If your sensor reads 0.1 in the current iteration, and it read 4.9 in the previous iteration, then the actual reading is 5.1, not 0.1

Can you work from there, or do you need a more detailed explanation?

Again, how large is the sensor's dead zone? You may need a new sensor.