PIR Motion Sensor (HC-SR501)

PIR Motion sensor HC-SR501

ตัวตรวจจับความเคลื่อนไหวโดยการตรวจจับความร้อนในบริเวณรอบๆ  เหมาะสำหรับสร้างระบบความปลอดภัยภายในบ้าน

HC-SR501 is based on infrared technology, automatic control module, using Germany imported LHI778 probe design, high sensitivity, high reliability, ultra-low-voltage operating mode, widely used in various auto-sensing electrical equipment, especially for battery-powered automatic controlled products.

Specification:

- Voltage: 5V – 20V

- Power Consumption: 65mA

- TTL output: 3.3V, 0V

- Lock time: 0.2 sec

- Trigger methods: L – disable repeat trigger, H enable repeat trigger

- Sensing range: less than 120 degree, within 7 meters

- Temperature: – 15 ~ +70

- Dimension: 32*24 mm, distance between screw 28mm, M2, Lens dimension in diameter: 23mm



int ledPin= 13;
int inputPin= 3;

void setup(){
  pinMode(ledPin, OUTPUT);
  pinMode(inputPin, INPUT);
}

void loop(){
  int value= digitalRead(inputPin);

  if (value == HIGH)
  {
    digitalWrite(ledPin, HIGH);
    delay(1000) ;
  }

  else
  {
    digitalWrite(ledPin, LOW);
  }