import machine, math, time

buzzer = machine.PWM(machine.Pin(15))
pot = machine.ADC(26)
prevFrequency = 0
buzzer.ductu_u16(32767)

def scale (value, fromMin, fromMax, toMin, toMax)
    return toMin + ((value - fromMin) * ((toMax - toMin) / (fromMax - fromMin)))

    while True:
    potValue - pot.read_u16()

    frequency = scale(potValuem 0, 65535, 120, 5000)

    if ((frequency < (prevFrequency - 50)) or  frequency > (prevFrequency + 50))
        prevFrequecy = frequency
        buzzer.freq(math.trunc(frequency))
     time.sleep_ms(25)