Week 10 Assignment – light sensor

This projects concept is related to automatic lights, where a sensor detects the amount of light in its surroundings and according to it, it switches lights on and off. So for this assignment, I decided to implement this technique:

This is the code that I used to implement this method:

int photoSensorPin = A0;
int buttonPin = 2;
int ledPin1 = 9;
int ledPin2 = 10;
void setup() {
  pinMode(photoSensorPin, INPUT);
  pinMode(buttonPin, INPUT);
  pinMode(ledPin1, OUTPUT);
  pinMode(ledPin2, OUTPUT);
void loop() {
  int sensorValue = analogRead(photoSensorPin);
  int buttonState = digitalRead(buttonPin);
  if (buttonState == HIGH) {
    digitalWrite(ledPin1, LOW);
    digitalWrite(ledPin2, HIGH);
  } else if (sensorValue < 512) {
    digitalWrite(ledPin1, HIGH);
    digitalWrite(ledPin2, LOW);
  } else {
    digitalWrite(ledPin1, LOW);
    digitalWrite(ledPin2, LOW);


Leave a Reply