Hindi:
अंधेरा होने पर LED अपने-आप ON।
English:
Automatically turn LED ON when light is low.
✅ CODE
void setup() {
pinMode(13, OUTPUT);
Serial.begin(9600);
}
void loop() {
int ldr = analogRead(A0);
Serial.println(ldr);
if (ldr > 245) digitalWrite(13, HIGH);
else digitalWrite(13, LOW);
}