This is a ray casting graphic demo that runs on a Arduion together with a ssd1306 oled display.
This code is based on the great tutorial on ray casting by Lode Vandevenne http://lodev.org/cgtutor/raycasting.html
Also see hackaday.io project page: https://hackaday.io/project/19076-ray-casting-on-an-arduino
Webpage to generate bitmap arrays: https://javl.github.io/image2cpp/ Choose "invers colors" and have width of image be divisable with 8
