basic sketch for pir sensor

Other Hardware Sensors
1

basic sketch for pir sensor

i want to try my pir sensor, can anybody help me

2

Sure.
Connect PIR sensor output to 10K resistor to +5V, and the same pin to D2 on your arduino.
Onboard LED should light up when the PIR output is active, which is usually low.

byte pirPin = 2;  // define the IO pins
byte ledPin = 13;
void setup(){
  pinMode (pirPin, INPUT); // set them as inputs/outputs
  pinMode (ledPin, OUTPUT);
}
void loop(){
  if (digitalRead (pirPin) == LOW){  // read the input pin
    digitalWrite (ledPin, HIGH);       // and drive the LED on 
  }
  else {                                     // pirPin is high, so
    digitalWrite (ledPin, LOW);      // drive the LED off
  }
}