Hi all, I’m trying to stop a horizontal rotating arm powered by stepper motors at certain points on a table. When the program starts, I want it to rotate until it sees some sort of emitter or reflector, stops and performs a function, and continues on its way.
My question is, what is the best sensor, or emitter and receiver setup to do this? The arm is inside a shallow cylinder, (think roll of tape but much larger and thin) so I could put some sort of reflector tape on the wall to trigger the sensor. I thought about using timings with the motor, but the wheels I’m using slip often and sometimes come up short of the target. I’d like to hear your take to see what you think would work best for this.