micropython piano

main.py

from machine import Pin, PWM
import time

# Button GPIO pins
button_pins = [5, 18, 19, 21, 22]

# RGB LED GPIO pins
red_pin = 32
green_pin = 33
blue_pin = 25

# Buzzer GPIO pin
buzzer_pin = 13

# Frequencies for C major scale notes
notes = {0: 262, 1: 294, 2: 330, 3: 349, 4: 392}  # C4  # D4  # E4  # F4  # G4

# RGB LED colors for each button - yellow, red, blue, green, white
colors = {
    0: (255, 255, 0),  # Yellow
    1: (255, 0, 0),  # Red
    2: (0, 0, 255),  # Blue
    3: (0, 255, 0),  # Green
    4: (255, 255, 255),  # White
}

# Initialize buttons
buttons = [Pin(pin, Pin.IN, Pin.PULL_UP) for pin in button_pins]

# Initialize RGB LED
red = PWM(Pin(red_pin), freq=1000, duty=0)
green = PWM(Pin(green_pin), freq=1000, duty=0)
blue = PWM(Pin(blue_pin), freq=1000, duty=0)

# Initialize buzzer
buzzer = PWM(Pin(buzzer_pin))
buzzer.duty(0)  # Turn off buzzer initially


def set_rgb_color(r, g, b):
    red.duty(int(r / 255 * 1023))
    green.duty(int(g / 255 * 1023))
    blue.duty(int(b / 255 * 1023))


try:
    while True:
        for i, button in enumerate(buttons):
            if not button.value():  # Button is pressed
                buzzer.freq(notes[i])
                buzzer.duty(16)

                r, g, b = colors[i]
                set_rgb_color(r, g, b)

                print(f"Button {i} pressed")
                while not button.value():
                    time.sleep(0.1)
                print(f"Button {i} released")

                buzzer.duty(0)
                set_rgb_color(0, 0, 0)

        time.sleep(0.1)

except KeyboardInterrupt:
    # Cleanup on exit
    buzzer.duty(0)
    set_rgb_color(0, 0, 0)
    red.deinit()
    green.deinit()
    blue.deinit()
    print("Exiting...")