#define SENSOR_PIN 2
#define RELAY_PIN 3
void setup()
{
pinMode(RELAY_PIN, OUTPUT);
pinMode(SENSOR_PIN, INPUT);
//Serial.begin(9600);
}
void loop()
{
//If object movement is detected then the sensor value will be 1 else the value will be 0
int sensorValue = digitalRead(SENSOR_PIN);
//Serial.println(sensorValue);
if (sensorValue == HIGH)
{
digitalWrite(RELAY_PIN, LOW); //Relay is low level triggered relay so we need to write LOW to switch on the light
}
else
{
digitalWrite(RELAY_PIN, HIGH);
}
}