User Manual

20
Lesson 4 Shock Switch
Introduction
A shock switch (as shown below), also vibration switch, spring switch or shock sensor, is an
electronic switch which senses vibration amplitude and transfers the signals to circuit device
thus switching on the circuit. It composes of conductive vibration spring, switch, trigger pin,
packaging agent and so on.
Components
- 1 * SunFounder Uno board
- 1 * USB data cable
- 1 * Shock switch module
- Jumper wires
Experimental Principle
The shock switch works like this: the conductive vibration spring and trigger pin are precisely
placed in the switch and fixed by adhesive. Normally, the spring and the trigger pin are
separated. Once the sensor detects shock, the spring will vibrate and contact with the trigger
pin, thus conducting and generating trigger signals.
With the LED attached to pin 13 already, connect the shock switch to digital pin 8. When the
shock switch induces shock signals, the LED will light up.
Experimental Procedures
Step 1: Build the circuit
Shock Switch Module SunFounder Uno
S ---------------------------------------- D8
- --------------------------------------- GND
+ ---------------------------------------- 5V
SunFounder