This gem is for Waveshare Electronics' IT-8951 controller based EPD (e-paper device) with Raspberry Pi.
You can easily control EPD with simple code.
-
Native Library for Raspberry Pi epd_it8950
-
root privileges (It crashes if you're not root. :-p)
require 'ruby_it8951'
IT8951.init
info = IT8951.get_device_info # => [width, height, addr, "fw ver", "lut ver"]
img = (0..15).inject([]){|a, i| a + [i * 16] * 100}
IT8951.transfer_image(20, 10, 100, 16, img)
IT8951.display_area(0, 0, info[0], info[1], 2)