/*
PIR Motion Sensor with Arudino Demo Code
*/
int led = 13; // Define the LED as Pin 13
int sensor = 4; // Define the Sensor Connected to Pin 4
int state = LOW; // Motion Detection
int val = 0; // Store the value of sensor
void setup() {
pinMode(led, OUTPUT); // initialize the LED as the output
pinMode(sensor, INPUT); // initialize the sensor as the input
Serial.begin(9600); // Define the serial communication
}
void loop(){
val = digitalRead(sensor); // Reading the sensor value
if (val == HIGH) { // if sensor is high
digitalWrite(led, HIGH); // switch on the LED
delay(100); // 100 milliseconds delay
if (state == LOW) {
Serial.println("Motion was detected");
state = HIGH; // Update the variable state in to HIGH
}
}
else {
digitalWrite(led, LOW); // Turning off the LED
delay(200); // 200 milliseconds delay
if (state == HIGH){
Serial.println("Motion stopped!");
state = LOW; // update the variable state into LOW
}
}
}
