Add auto_write=False, turn off DotStar, linting.

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Kattni 2019-04-05 14:06:50 -04:00 committed by GitHub
parent dbc544a37b
commit c3efe11e06
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@ -5,30 +5,33 @@ import time
import board
import neopixel
import adafruit_dotstar
try:
import urandom as random # for v1.0 API support
except ImportError:
import random
dot = adafruit_dotstar.DotStar(board.APA102_SCK, board.APA102_MOSI, 1, brightness=0.2)
dot[0] = (0, 0, 0)
numpix = 16 # Number of NeoPixels (e.g. 16-pixel ring)
pixpin = board.D0 # Pin where NeoPixels are connected
strip = neopixel.NeoPixel(pixpin, numpix, brightness=.3)
strip = neopixel.NeoPixel(pixpin, numpix, brightness=.3, auto_write=False)
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]
elif pos < 85:
return [int(pos * 3), int(255 - (pos * 3)), 0]
elif pos < 170:
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 [int(255 - pos * 3), 0, int(pos * 3)]
else:
pos -= 170
return [0, int(pos * 3), int(255 - pos * 3)]
return (0, int(255 - pos*3), int(pos*3))
pos -= 170
return (int(pos * 3), 0, int(255 - (pos*3)))
mode = 0 # Current animation effect
@ -45,14 +48,14 @@ while True: # Loop forever...
# Set same pixel to "off" color now but DON'T refresh...
# it stays on for now...bot this and the next random
# pixel will be refreshed on the next pass.
strip[i] = [0,0,0]
strip[i] = [0, 0, 0]
time.sleep(0.008) # 8 millisecond delay
elif mode == 1: # Spinny wheel (4 LEDs on at a time)
for i in range(numpix): # For each LED...
if ((offset + i) & 7) < 2: # 2 pixels out of 8...
strip[i] = color # are set to current color
else:
strip[i] = [0,0,0] # other pixels are off
strip[i] = [0, 0, 0] # other pixels are off
strip.show() # Refresh LED states
time.sleep(0.04) # 40 millisecond delay
offset += 1 # Shift animation by 1 pixel on next frame