Photoresistor Light Sensor with Arduino

Circuit Diagram:

Photoresistor Light Sensor with Arduino.

project details

project details......

Code:

  int greenLedPin = 2; int yellowLedPin = 3; int redLedPin = 4; int lightSensorPin = A0; int analogValue = 0; void setup() { pinMode(greenLedPin, OUTPUT); pinMode(yellowLedPin,OUTPUT); pinMode(redLedPin,OUTPUT); } void loop(){ analogValue = analogRead(lightSensorPin); if(analogValue < 50){ digitalWrite(redLedPin, HIGH); } else if(analogValue >= 50 && analogValue <= 100){ digitalWrite(yellowLedPin, HIGH); } else{ digitalWrite(greenLedPin, HIGH); } delay(200); digitalWrite(greenLedPin, LOW); digitalWrite(yellowLedPin, LOW); digitalWrite(redLedPin, LOW); }

Project Testing Video: