This AT407 basic tilt switch can easily be used to detect orientation. Inside the can are a pair of balls that make contact with the pins when the case is upright. Tilt the case over and the balls don't touch, thus not making a connection.
There are numerous uses for these basic sensors, but keep in mind you might need to use some debouncing code, as the sensor isn't immune to small vibrations and such.
- Additional Information
Type Tilt IC Name No IC Manufacturer No Input Voltage (DC) 3.5V to 24V Supply Current (Maximum) 6 mA Output Interface Digital Object Distance (Range) No