Arduino - Button With LED
by MertArduino in Circuits > Arduino
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Arduino - Button With LED
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Turns ON and OFF a light LED, when pressing a pushbutton.
Hardware Required
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- Arduino Uno
- LED
- Button
- 220 and 10k ohm resistors
- Wires
- Breadboard
LED Connections
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- LED attach to board
- Resistor (220 ohm) connect to LED's long leg (+)
- The wire connect to resistor empty leg
- After that, same wire connect to digital pin from resistor
- The wire connect to LED's short leg (-), after that same wire connect to ground
Pushbutton Connections
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- The button attach to board
- 10k resistor connect to button leg
- The wire connect to resistor empty leg, after that same wire connect to ground
- The wire connect to button's other leg, after that same wire connect to +5V
- The yellow wire connect to button's top leg, after that connect to digital pin
Code
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const int ledPin = 2;
const int buttonPin = 4;
int buttonState = 0;
void setup() {
Serial.begin(9600);
pinMode(ledPin, OUTPUT);
pinMode(buttonPin, INPUT);
}
void loop() {
buttonState = digitalRead(buttonPin);
if (buttonState == HIGH) {
digitalWrite(ledPin, HIGH);
Serial.println("LED ON +++++++");
}
else {
digitalWrite(ledPin, LOW);
Serial.println("LED OFF -------");
}
}
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