ARDUINO Push button按鈕數位輸入開關LED

接線圖

X1 Arduino Uno R3
X1 單色LED
X1 220~10k Ω 電阻
X2 按鈕
LED燈需要接上電阻 避免電流過大燒壞
左邊按鈕按下 LED 亮燈
右邊按鈕按下 LED 暗燈

Arduino IDE code

int ledPin = 5;

int buttonApin = 9;

int buttonBpin = 8;

byte leds = 0;

void setup()

{

  pinMode(ledPin, OUTPUT);

  pinMode(buttonApin, INPUT_PULLUP);  

  pinMode(buttonBpin, INPUT_PULLUP);  

}

void loop()

{

  if (digitalRead(buttonApin) == LOW)

  {

    digitalWrite(ledPin, HIGH);

  }

  if (digitalRead(buttonBpin) == LOW)

  {

    digitalWrite(ledPin, LOW);

  }

}