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chardane/code.py Secret

Last active Jan 28, 2022
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Rainbow Animation from Adafruit
import time
import board
import neopixel
pixel_pin = board.D2
num_pixels = 12
order = neopixel.GRB
pixels = neopixel.NeoPixel(pixel_pin, num_pixels, brightness=0.3, auto_write=False, pixel_order=order)
def wheel(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)
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 rainbow_cycle(wait):
for j in range(255):
for i in range(num_pixels):
rc_index = (i * 256 // num_pixels) + j
pixels[i] = wheel(rc_index & 255)
pixels.show()
time.sleep(wait)
while True:
rainbow_cycle(0) # Increase the number to slow down the rainbow
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