@EmilyJane That would have been great, but it's seems very hard to find specs on these (this is an old post, but probably still true: Garage door safety sensors). Also,I'm assuming I would need a 3-wire since the sensors probably need more voltage then the MCU is capable of.
@LarryD My goal is to know when the end of the vehicle has cleared the plane of the garage door. I'm having trouble understanding how a distance sensor would do that?