Automatically Feeds Cats
We have a circuit that cuts power to the 28BYJ48 motor and ULN2003AN driver board when it is not in use, to minimize overheating.
This uses a IRFZ44N N-Channel mosfet:
- Gate: Pin 2 on esp32
- Drain: Goes to the negative line on the ULN2003AN
- Source: Goes to the negative line for the 9V power supply
Important: make sure to include a ~10KΩ resistor between the gate and the source.
