sk6812-client/knightrider.py

#!/usr/bin/env python3

import sk6812
import time

num_modules = 300

interval = 0.05

w = sk6812.SK6812("zybot", 2703)
w.set_fadestep(0.05/interval)
w.set_num_modules(num_modules)

# dictionary which maps {module: [r, g, b]}
set_colors = {}

curModule = [0, 0, 0, 0]
speed = [0.49, 0.65, 1, 0.81]
#countUp = [True, True, False]
while True:
  set_colors = {}

  set_colors[int(curModule[0])] = [0, 0, 0, 0]
  set_colors[int(curModule[1])] = [0, 0, 0, 0]
  set_colors[num_modules-1-int(curModule[2])] = [0, 0, 0, 0]
  set_colors[num_modules-1-int(curModule[3])] = [0, 0, 0, 0]

  set_colors[int(curModule[0])][0] = 255
  set_colors[int(curModule[1])][1] = 255
  set_colors[num_modules-1-int(curModule[2])][2] = 255
  set_colors[num_modules-1-int(curModule[3])][3] = 255

  for k in set_colors.keys():
    w.add_color(k, set_colors[k][0], set_colors[k][1], set_colors[k][2], set_colors[k][3])

  for i in range(num_modules):
    w.fade_color(i, 0, 0, 0, 0)

  w.commit()

  for i in range(4):
    curModule[i] += speed[i]
    if curModule[i] >= num_modules:
      curModule[i] -= num_modules

  time.sleep(interval)