Tilt Sensor (Ball Switch)
A switch that opens or closes depending on its angle.
How it works
A tilt sensor is a small can with a rolling conductive ball inside. When upright the ball bridges two contacts; tip it past an angle and the ball rolls away, breaking the connection. It's a cheap way to detect orientation, knocks, or shaking.
Read it like a button with INPUT_PULLUP. It's bouncy, so debounce in code (a short delay or check twice).
Pins
- Leg 1
- To a digital pin (INPUT_PULLUP).
- Leg 2
- To GND.
Ratings
- Output
- Digital open/closed
- Read
- INPUT_PULLUP
Tips
- It chatters when moved — add a small debounce.
- Behavior is orientation-dependent; test which way is 'triggered'.