Garage Door Sensor

This is designed to sense whether or not my garage door is open. Since the door doesn't always stop at the same place when rolled up a magnetic sensor wouldn't work.

The friction between the sensor arm and the plastic pin causes by the microswitch roller sometimes keeps the arm from falling back down so I added a nut for weight that is held on by a small screw. This version includes a hole in the sensor arm for the screw.