Introduction

This is a simple to use motion sensor. Power it up and wait 1-2 seconds for the sensor to get a snapshot of the still room. If anything moves after that period, the 'alarm' pin will go low.

Specification

• Type: Digital
• Supply Voltage: 3～5V
• Current: 50μA
• Working temperature: 0℃～＋70℃
• Output level(HIGH): 4V
• Output level(LOW): 0.4V
• Detect angle: 110 Degree
• Detect distance: 7 meters
• Size: 28mm×36mm
• Weight: 25g

Application

• Automatic door
• Infrared burglar alarm
• The highway vehicle traffic counter

Pinout

Tutorial

Connection Diagram

Sample Code

 const int buttonPin = 2;
  const int ledPin =  13;
  void setup() {
    pinMode(ledPin, OUTPUT);
    pinMode(buttonPin, INPUT);
  }
  void loop()
  {
     if (digitalRead(buttonPin) == HIGH)
     {
       digitalWrite(ledPin, HIGH);
     }
     else {
       digitalWrite(ledPin, LOW);
     }
  }

Result

When sensors detect people closed, the light will be lighted.

More Documents

• Schematic SEN0018