All About RCWL-0516 Microwave Radar Motion Sensor

1int ledPin   = 3;               // Pin where the LED is hooked up
2int inputPin = 2;               // Pin where teh Radar Sensor is hooked up
3int motion   = 0;               // State of motion
4
5
6void setup() {
7  pinMode(ledPin, OUTPUT);      // Declare the LED pin as output
8  pinMode(inputPin, INPUT);     // Declare the sensor pin as input 
9  Serial.begin(9600);
10};
11
12
13void loop() {
14  motion = digitalRead(inputPin);  // Read the input pin
15  
16  if (motion == HIGH) { 
17    digitalWrite(ledPin, HIGH);   // Turn on the LED
18    Serial.println("Motion Detected!");
19  } else {
20    digitalWrite(ledPin, LOW);    // Turn off the LED
21    Serial.println("No Motion Detected!");
22  };
23};