LED control with LDR & arduino UNO

hey there!, in this post i will show you how to control led using ldr & arduino UNO

Component required

Arduino Uno

LED

LDR (photoresistor)

220 and 10k ohm resistors

Wires

Breadboard

Connection diagram of LED, LDR, & ARDUINO UNO:

Upload the code to arduino:

const int ledPin = 13;

const int ldrPin = A0;

void setup() {

Serial.begin(9600);

pinMode(ledPin, OUTPUT);

pinMode(ldrPin, INPUT);

}

void loop() {

int ldrStatus = analogRead(ldrPin);

if (ldr Status <=300) {

digitalWrite(ledPin, HIGH);

Serial.println("LDR is DARK, LED is ON");

}

else {

digitalWrite(ledPin, LOW);

Serial.println("---------------");

}

}

ldr to arduino code

.txt

Download TXT • 370B

Result: