The KY031 knock sensor module is ideal for adding detection of shocks and impacts to your project.
It can detect an event based on percussion (typical knock-knock knock type) to activate a function, controlling a relay etc.
The sensor has a very light spring locked at one end the opposite end is suspended over a large contact plate.
When an event occurs like a knock, the spring moves inside its transparent case hitting the plate.
This event can be detected by the microcontroller as a trigger event.
- KY031 Knock Sensor
- Working voltage : 5 VDC
- Pin pitch : 2.54mm
- Size : 30mm x18mm x 6mm