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#          .ldxkkOOOOkkOO000Okkxkkkkx:.
#        .lddxkkOkOOO0OOO0000Okxxxxkkkk:
#       'ooddkkkxxkO0000KK00Okxdoodxkkkko
#      .ooodxkkxxxOO000kkkO0KOxolooxkkxxkl
#      lolodxkkxxkOx,.      .lkdolodkkxxxO.
#      doloodxkkkOk           ....   .,cxO;
#      ddoodddxkkkk:         ,oxxxkOdc'..o'
#      :kdddxxxxd,  ,lolccldxxxkkOOOkkkko,
#       lOkxkkk;  :xkkkkkkkkOOO000OOkkOOk.
#        ;00Ok' 'O000OO0000000000OOOO0Od.
#         .l0l.;OOO000000OOOOOO000000x,
#            .'OKKKK00000000000000kc.
#               .:ox0KKKKKKK0kdc,.
#                      ...
#
# Author: peppe8o
# Date: Dec 07th, 2023
# Version: 1.0
# blog: https://peppe8o.com

import machine, neopixel, time

num_pixels = 12
neo_di = machine.Pin(28)
np = neopixel.NeoPixel(neo_di, num_pixels)

def colorwheel(pos):
    # Input a value 0 to 255 to get a color value.
    # The colours are a transition r - g - b - back to r.
    if pos < 0 or pos > 255:
        return (0, 0, 0, 0)
    if pos < 85:
        return (255 - pos * 3, pos * 3, 0,)
    if pos < 170:
        pos -= 85
        return (0, 255 - pos * 3, pos * 3)
    pos -= 170
    return (pos * 3, 0, 255 - pos * 3)


def color_chase(color, wait):
    for i in range(num_pixels):
        np[i] = color
        time.sleep(wait)
        np.show()
    time.sleep(wait)

def rainbow_cycle(wait):
    for j in range(255):
        for i in range(num_pixels):
            rc_index = (i * 256 // num_pixels) + j
            np[i] = colorwheel(rc_index & 255)
        np.write()
        time.sleep(wait)

while True:
    rainbow_cycle(0.001)