All of the images shown on the analog oscilloscopes were created by students that took the class.

A link to the lab and source code is given. The lab is taught using a chipKIT Fubarino SD prototyping board.

With the source code you can find a Microsoft Excel file that can be used to generate source code to draw pictures. Fill in the grid with 1's where you want to generate code for the specific pixel.

http://globedrop.com/mtsac/elec74/2014-spring/Week%208/ELEC74%20DAC%20XY%20Template.xls