1.Product Introduction

Human infrared sensor is used to detect the infrared radiation emitted by the human or animal body module, when someone or other hot objects enter the sensor’s sensing range, the object will cause changes in the infrared radiation.

Its characteristic is that only when the external radiation causes its own temperature to change, it gives a corresponding electrical signal, when the temperature change tends to be stable, there will be no signal output, so it is only sensitive to the moving human body.

Application reference: human body sensor light, automatic door, automatic faucet, automatic stair lighting, etc.

2.Parameter Specification

3.Wiring Diagram

4.Sample Code

1//www.acebott.com
2void setup() {
3pinMode(7,INPUT);//Set pin 7 to input mode
4Serial.begin(9600);//Set baud rate to 9600
5}
6void loop() {
7Serial.println(digitalRead(7));// Read the state of pin 7and print it to the serial monitor
8delay(1000);
9}

5.Test Result

After uploading the code to the controller board, open the serial port monitor of the Arduino IDE, set the baud rate to 9600, and switch to scroll mode.

When we move, the sensor returns data 1; When we are at rest, the sensor returns data 0.

6.Related Resources

PDF and Code