// Define controllers/triggers by pin
const int buttonPin = 3;
const int ledPin = 5; //Define LED pin at 5
const int dialPin = A0;
const int joyStickX = A2;
const int joyStickY = A3;

int buttonState = 0;
int dialval = 0;
int joyXval = 0.45; // halfway point of values (joystick resting position)
int joyYval = 5;

void setup() {
  // initialise digital pin
  pinMode(buttonPin, INPUT);
  pinMode(ledPin, OUTPUT);

  Serial.begin(9600);
}

void loop() {
  // read the value/state of the controller/triggers
  buttonState = digitalRead(buttonPin); // button on or off
  {
  dialVal = analogRead(dialPin);
  dialVal = map(dialVal, 0, 1023, 0, 127); // scale to max
  }
  joyXval = analogRead(joyStickX);
  joyXval = map(joyXval, 0, 1023, 0, 0.9);
  joyYval = analogRead(joyStickY);
  joyYval = map(joyYval, 0, 1023, 0, 10);


  //check buttonState
  if (buttonState == HIGH) {
    digitalWrite(ledPin, HIGH); // turn LED on
    Serial.print(buttonState);
    digitalWrite(ledPin, LOW);
  } else {
    // turn LED off
    digitalWrite(ledPin, LOW);
    Serial.print(buttonState);
  }

  // Read analog values
  Serial.print(" ");
  Serial.print(dialVal);
  Serial.print(" ");
  Serial.print(joyXval);
  Serial.print(" ");
  Serial.print(joyXval);

  Serial.println();
}

/Volumes/SANDISK-32/Music_Tech_Synth_Arduino_Code/Music_Tech_Synth_Arduino_Code.ino: In function 'void loop()':
Music_Tech_Synth_Arduino_Code:27:3: error: 'dialVal' was not declared in this scope
   dialVal = analogRead(dialPin);

   ^
Music_Tech_Synth_Arduino_Code:49:16: error: 'dialVal' was not declared in this scope
   Serial.print(dialVal);
                ^
exit status 1
'dialVal' was not declared in this scope