ADC

analogRead

analog_read.ino

int analogPin = 0;     // potentiometer wiper (middle terminal) connected to analog pin 0
                       // outside leads to ground and +5V
int val = 0;           // variable to store the value read

void setup()
{
  Serial.begin(9600);          //  setup serial
}

void loop()
{
  val = analogRead(analogPin);    // read the input pin
  Serial.println(val);             // debug value
}

적외선 발광/수광