Created
February 8, 2019 00:50
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import time | |
import board | |
# For Trinket M0, Gemma M0, ItsyBitsy M0 Express and ItsyBitsy M4 Express | |
import adafruit_dotstar | |
led = adafruit_dotstar.DotStar(board.APA102_SCK, board.APA102_MOSI, 1) | |
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 int(255 - pos * 3), int(pos * 3), 0 | |
if pos < 170: | |
pos -= 85 | |
return 0, int(255 - pos * 3), int(pos * 3) | |
pos -= 170 | |
return int(pos * 3), 0, int(255 - (pos * 3)) | |
led.brightness = 0.5 | |
i = 0 | |
while True: | |
i = (i + 1) % 256 # run from 0 to 255 | |
led[0] = (wheel(i)) | |
time.sleep(0.1) |
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