void setup() {
  Serial.begin(115200);
  pinMode(15, OUTPUT);
  pinMode(2, INPUT);
  // vertical
  pinMode(13, INPUT); 
  // horizontal
  pinMode(12, INPUT); 

  // red
  pinMode(14, OUTPUT);
  // blue
  pinMode(27, OUTPUT);
}

void loop() {
  int controller= analogRead(2);
  int vert =analogRead(13);
  int horiz =analogRead(12);
  int controllerMap = map(controller,0,4095,0,255);
  int horizMap = map(horiz,0,4095,0,255);
  int vertMap = map(vert,0,4095,0,255);
  analogWrite(15,controllerMap);
  analogWrite(14,horizMap);
  analogWrite(27,vertMap);
 
}