PIR Motion sensor module

PIR（Passive Infrared Detection）are used to detect motion of human movement. This version has a large lens which can support long range and wide angle. 2.54mm standard connector is easy to fix it anywhere.

Model:SEN116A2B

Features

Long range
Wide angle
Low consumption
DC 3.0-5.5V power supplier

Specifications

Input Voltage: DC3.0-5.5V
Current: 100uA(max)
Detecting distance: 9m(max)
Output signal: 0,VCC (Output high when motion detected)
Sentry Angle: 120°
Connector:3Pin 2.54mm pitch
Size： L36*W26*H21(mm)

Usage

The following sketch demonstrates a simple application of sensing montion. When someone moves in its detecting range, it will output High through its SIG pin and the LED will light. Otherwise, it will output LOW. Then you can use it to detect the motion of people.

Programming

Includes important code snippet. Demo code like :

 
/*******************************************************************************/
/*macro definitions of PIR motion sensor pin and LED pin*/
#define PIR_MOTION_SENSOR 8//Use pin 8 to receive the signal from the module 
#define LED	4//the Grove - LED is connected to D4 of Arduino

void setup()
{
	pinsInit();
}

void loop() 
{
	if(isPeopleDetected())//if it detects the moving people?
		turnOnLED();
	else
		turnOffLED();
}
void pinsInit()
{
	pinMode(PIR_MOTION_SENSOR, INPUT);
	pinMode(LED,OUTPUT);
}
void turnOnLED()
{
	digitalWrite(LED,HIGH);
}
void turnOffLED()
{
	digitalWrite(LED,LOW);
}
/***************************************************************/
/*Function: Detect whether anyone moves in it's detecting range*/
/*Return:-boolean, ture is someone detected.*/
boolean isPeopleDetected()
{
	int sensorValue = digitalRead(PIR_MOTION_SENSOR);
	if(sensorValue == HIGH)//if the sensor value is HIGH?
	{
		return true;//yes,return ture
	}
	else
	{
		return false;//no,return false
	}
}

Version Tracker

Revision	Picture	Descriptions	Release
v0.9b	http://www.seeedstudio.com/wiki/images/1/1c/Pir_motion_sensor_v0.9.JPG	Initial public release	Jun 08, 2009
v1.0	http://www.seeedstudio.com/wiki/images/6/62/Pir_motion_sensor_v1.0.jpg	Change the hardware design, smaller and sensitive. Supply voltage change to 3.0-5.5V	July 30, 2014

Resources

PIR Motion sensor Eagle file

Licensing

This documentation is licensed under the Creative Commons Attribution-ShareAlike License 3.0 Source code and libraries are licensed under GPL/LGPL, see source code files for details.