// Josef Spjut
// August 2015

// Global variables
const int xAxis = A2;
const int yAxis = A4;

// parameter
int responseDelay = 5;

void setup() {
  // LED pin
  pinMode(13, OUTPUT);
}

void loop() {
  // analogRead reads a value between 0 and 1023
  int xReading = analogRead(xAxis);
  // map xReading from 0-1023 to 0-255
  int reading = map(xReading, 0, 1023, 0, 255);
  // analogWrite wants a value between 0 and 255
  analogWrite(13, reading);
  delay(responseDelay);
}