Hindi:
Button दबाने पर LED जलती है, छोड़ने पर LED बंद।
English:
LED turns ON when button is pressed.
🔧 Components
Arduino Uno
LED
Push Button
Resistor
🔌 Circuit
Button → Pin 2
LED → Pin 7
✅ CODE
int led = 7, pb = 2;
void setup() {
Serial.begin(9600);
pinMode(led, OUTPUT);
pinMode(pb, INPUT);
}
void loop() {
int signal = digitalRead(pb);
Serial.println(signal);
if (signal == 1) {
digitalWrite(led, HIGH);
delay(200);
} else {
digitalWrite(led, LOW);
}
}
📘 Working
Button press → HIGH signal → LED ON
Button release → LOW → LED OFF