I'm building an automated cat feeder. Right now there's no feedback to the pi to even know the motor is there, let alone spun or that actual food was dispensed.
I could monitor the rotation of the motor and hope food came out if it spun.
I could try to use some kind of sensor to capture the fact that food went by?
I could try to weigh the food before final dispensing?
I'd be interested in any suggestions on the best way to confirm food got to the monsters.