from machine import Pin,PWM
from utime import sleep_ms
from neopixel import NeoPixel

np=NeoPixel(Pin(23),16)
def tone(buzzer_pin, freq, time):
    buzzer= PWM(Pin(14), freq=freq, duty=512)
    sleep_ms(time)
    buzzer.deinit()

for i in range(16):
    tone(14,440,200)
    np[i]=255,0,0
    tone(14,800,100)
    np.write()
    sleep_ms(100)

    np[i]=0,255,0
    tone(14,350,300)
    np.write()
    sleep_ms(200)

    np[i]=0,0,255
    tone(14,230,600)
    np.write()
    sleep_ms(100)