Benham Disc for Playdate

This is an optical illusion called the Benham Disc. When spun it creates the illusion of colour; red, green and blue. This is especially interesting on the Playdate console given that it is a 1bit screen!

You can use the crank if you wish, though best results appear to be with auto spin turned on (the A button to toggle) and Speed set to 3 (use up and down).