#define POT A0
#define BUZZER 3
#define BUTTON 2
int signal;
bool buttonPressed;

void setup() {
  Serial.begin(9600);
  pinMode(POT, INPUT);
  pinMode(BUZZER, OUTPUT);
  pinMode(BUTTON, INPUT_PULLUP);
}

void loop() {
  buttonPressed = digitalRead(BUTTON);
  signal = map(analogRead(POT),0,1023,50,5000);

  if (!buttonPressed) tone(BUZZER,signal);
  else noTone(BUZZER); 
}