jcs.org
Utilities for drawing on 4 Adafruit 8x8 LED Backpack displays as one
1#!/usr/bin/env ruby
2
3require "./fourscreen"
4
5fs = FourScreen.new
6br = 0
7br_dir = :up
8while true do
9 (8 * 4).times do |x|
10 8.times do |y|
11 fs.set(x, y, rand(4))
12 end
13 end
14 fs.set_brightness(br)
15 fs.write
16
17 if br_dir == :up && br == 15
18 br_dir = :down
19 elsif br_dir == :down && br == 0
20 br_dir = :up
21 end
22
23 br += (br_dir == :down ? -1 : 1)
24end