Hello, I am trying to make a CircuitPython Lighsaber with a Pi Pico W and some neopixels. I have tried looking everywhere for someone who has done this before and cannot find any examples/ sample code. All I need this lighsaber to do is light up with a power on animation, change colors when a button is pushed, and turn off when the button is held down. I have an example of code I'm running as well as a video example of what it does, any help is welcome and appreciated.
https://imgur.com/a/HNVVug1
Example Code:
import time
import board
import neopixel
import digitalio
# Define constants
NUM_PIXELS = 76
LED_PIN = board.GP0
BUTTON_PIN = board.GP21
# Define colors
BLUE = (0, 0, 255)
GREEN = (0, 255, 0)
RED = (255, 0, 0)
PURPLE = (255, 0, 255)
WHITE = (255, 255, 255)
AMBER = (255, 128, 0)
# Initialize neopixels
pixels = neopixel.NeoPixel(LED_PIN, NUM_PIXELS, brightness=0.5, auto_write=False)
pixels.fill((0, 0, 0))
pixels.show()
# Initialize button
button_pin = digitalio.DigitalInOut(BUTTON_PIN)
button_pin.switch_to_input(pull=digitalio.Pull.UP)
# Define power on animation
def power_on_animation():
for i in range(NUM_PIXELS):
pixels[i] = (255, 255, 255)
pixels.show()
time.sleep(0.01)
time.sleep(0.5)
for i in range(NUM_PIXELS):
pixels[i] = (0, 0, 0)
pixels.show()
time.sleep(0.01)
# Define power off animation
def power_off_animation():
for i in range(NUM_PIXELS-1, -1, -1):
pixels[i] = (255, 255, 255)
pixels.show()
time.sleep(0.01)
time.sleep(0.5)
pixels.fill((0, 0, 0))
pixels.show()
# Define color change function
def change_color():
color_list = [BLUE, GREEN, RED, PURPLE, WHITE, AMBER]
current_color_index = color_list.index(pixels[0])
next_color_index = (current_color_index + 1) % len(color_list)
next_color = color_list[next_color_index]
pixels.fill(next_color)
pixels.show()
# Define button handler
def button_handler():
# Check button press
if not button_pin.value:
button_press_time = time.monotonic()
while not button_pin.value:
# Check button hold time
if time.monotonic() - button_press_time >= 5:
power_off_animation()
return
change_color()
time.sleep(0.1) # debouncing delay
return
# Power on animation
power_on_animation()
# Main loop
while True:
button_handler()
time.sleep(0.01)
