PIR Motion Sensor Module HC-SR501

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*Disclaimer: The images are merely illustrative.

Overview

Highly integrated module popularly used for entry detection, it complies with microcontroller or DC loads.

Specification

• Input Voltage: DC 4.5-20V
• Static current: 50uA
• Output signal: 0,3V or 5V (Output high when motion detected)
• Sentry Angle: 110 degree
• Sentry Distance: max 7 m
• Shunt for setting overide trigger: H - Yes, L - No
• Operation Level Digital 5V
• Power Supply External 5V
• Weight 15.00g
• Version 1.0

Advantage

• Simple, easy to adopt in system
• There are two adjustable potentiometer on the module, you can use them to change the trigger sensitivity and the duration of the trigger signal

Sample Code

// (HC-SR501) PIR Sensor

int PIRpin = 8; // PIR connected pin
int value;

void setup() {
Serial.begin(9600);
pinMode(2, OUTPUT); //For Led
}

void loop() {
value = digitalRead(PIRpin); //Read PIR state

if (value == LOW) {
Serial.println("No Movement");
digitalWrite (2, LOW);
}
else {
Serial.println("Movement!");
digitalWrite (2, HIGH);

}

delay(100); //Wait
}
 

Datasheet

HC-SR501 PIR MOTION DETECTOR