import time
from machine import Pin
from neopixel import NeoPixel

time.sleep(0.1) # kurz warten auf die USB-Verbindung
#print("12-LED Neopixel-Ring mit Raspberry Pi Pico W")

# InformatikSchool4Girls 2026 Workshop OTH Amberg-Weiden
# http://www.oth-aw.de/schaefer-ulrich/pico/

ring = NeoPixel(Pin(27), 12) # Pin, 12 LEDs (bei diesem Ring)

def wheel(pos):
    pos %= 256
    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)

for led in range(12):
    color = wheel(led * 256 // 12)
    ring[led] = color

ring.write()