User Manual

22
Lesson 5 Knock Sensor
Introduction
A knock sensor (as shown below) is similar to the shock switch except that it's more sensitive.
It can feel small amplitude vibration.
Components
- 1 * SunFounder Uno board
- 1 * USB data cable
- 1 * Knock sensor module
- Several jumper wires
Experimental Principle
The principle is similar to that of the shock switch. Connect the knock switch sensor pin S to
D3 to build a simple circuit. When the knock switch sensor inducts knock signals, the LED
attached to pin 13 will light up.
Experimental Procedures
Step 1: Build the circuit
Knock Sensor Module SunFounder Uno
S ----------------------------------------D3
- ------------------------------------- GND
+ --------------------------------------- 5V
Step 2: Program (Please refer to the example code in LEARN -> Get Tutorial on our website)
Step 3: Compile
Step 4: Upload the sketch to SunFounder Uno
SunFounder