arduino output com input to digital pin code example
Example 1: arduino digital io pins
void setup() {
pinMode(13, OUTPUT); // sets the digital pin 13 as output
}
void loop() {
digitalWrite(13, HIGH); // sets the digital pin 13 on
delay(1000); // waits for a second
digitalWrite(13, LOW); // sets the digital pin 13 off
delay(1000); // waits for a second
}
Example 2: arduino internal pull up resistor
int sensorValue = digitalRead(2);