Piezo buzzer test

#define ALARM 3

float sinVal;
int toneVal;
void setup() {
  pinMode(ALARM, OUTPUT);
}

void loop() {
  for (int x=0; x<180; x++) {
    // convert degrees to radians then obtain sin value
    sinVal = (sin(x*(3.1412/180)));
    // generate a frequency from the sin value
    toneVal = 2000+(int(sinVal*1000));
    tone(ALARM, toneVal);
  }

delay(100); }