from machine import Pin, PWM
import time

buzzer = PWM(Pin(14))

# Turn sound on
buzzer.duty_u16(32768)

# Notes (Hz)
C = 262
D = 294
E = 330
F = 349
G = 392
A = 440
Bb = 466
C5 = 523

# Melody: (note, duration)
melody = [
    (C, 0.3), (C, 0.3), (D, 0.6), (C, 0.6), (F, 0.6), (E, 1.2),
    (C, 0.3), (C, 0.3), (D, 0.6), (C, 0.6), (G, 0.6), (F, 1.2),
    (C, 0.3), (C, 0.3), (C5, 0.6), (A, 0.6), (F, 0.6), (E, 0.6), (D, 1.2),
    (Bb, 0.3), (Bb, 0.3), (A, 0.6), (F, 0.6), (G, 0.6), (F, 1.2)
]

# Play song
for note, duration in melody:
    buzzer.freq(note)
    time.sleep(duration)
    time.sleep(0.05)  # small gap between notes

# Turn sound off
buzzer.duty_u16(0)