// Black - ground wire
// Red - Power supply wire

// the middle pin for the potentiometer must be connected to an analogue pin 
const int potentiometer = A2; // or use #define potentiometer A2

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
  Serial.println(analogRead(potentiometer)); //value between 0 and 1023
  delay(100);
}

//here is code for turning on the LED if the button is pressed