You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
40 lines
857 B
40 lines
857 B
7 years ago
|
#!/bin/env python3
|
||
|
|
import gex
|
||
|
|
import time
|
||
|
|
|
||
|
|
# this shows a spinny animation on a 30-pixel strip forming a circle
|
||
|
|
|
||
|
|
def draw_comet(buf, index):
|
||
|
|
r = 0xFF
|
||
|
|
g = 0x22
|
||
|
|
b = 0x00
|
||
|
|
steps = 5
|
||
|
|
fades = [0.05, 1, 0.5, 0.1, 0.05]
|
||
|
|
|
||
|
|
for i in range(steps):
|
||
|
|
fade = fades[i]
|
||
|
|
buf[(len(buf) + index - i)%len(buf)] = \
|
||
|
|
round(r * fade)<<16 | \
|
||
|
|
round(g * fade)<<8 | \
|
||
|
|
round(b * fade)
|
||
|
|
|
||
|
|
with gex.Client(gex.TrxRawUSB()) as client:
|
||
|
|
# Neopixel strip
|
||
|
|
strip = gex.Neopixel(client, 'npx')
|
||
|
|
|
||
|
|
markers = [0, 15]
|
||
|
|
for i in range(1000):
|
||
|
|
buf = [0]*30
|
||
|
|
for j in range(len(markers)):
|
||
|
|
n = markers[j]
|
||
|
|
|
||
|
|
draw_comet(buf, n)
|
||
|
|
|
||
|
|
n = n + 1 if n < len(buf)-1 else 0
|
||
|
|
markers[j] = n
|
||
|
|
|
||
|
|
strip.load(buf)
|
||
|
|
time.sleep(0.02)
|
||
|
|
|
||
|
|
strip.clear()
|