Digital input
serial monitor
Two button control one LED
const int buttonPin = 2; // the number of the pushbutton pin const int ledPin = 13; // the number of the LED pin const int buttonPinoff = 3; // variables will change: int buttonState = 0;// variable for reading the pushbutton status int buttonState1 = 0; void setup() { // initialize the LED pin as an output: pinMode(ledPin, OUTPUT); // initialize the pushbutton pin as an input: pinMode(buttonPin, INPUT); pinMode(buttonPinoff, INPUT); } void loop() { // read the state of the pushbutton value: buttonState = digitalRead(buttonPin); buttonState1 = digitalRead(buttonPinoff); // check if the pushbutton is pressed. If it is, the buttonState is HIGH: if (buttonState == LOW) { // turn LED on: digitalWrite(ledPin, HIGH); } if (buttonState1 == LOW){ digitalWrite(ledPin, LOW); } }