In this week’s episode of “things that weren’t designed to work”. I have taken an i2c display, driven off an interrupt based refresh and mixed it with ws8212. As long as you can guarantee that you will always be the master i2c should work with ws8212. The SSD1306 is a cheap 128x64 1 bit display. The code was hacked from the original blocking Adafruit + Wire libraries to avr-i2c code to allow for other processing while the display is updating ( not enough room to double buffer ). I’m working on pushing the code upstream for other to access. This is a crude demonstration taking the demo code, removing all delays() and then placing a rainbow in the time when the graphics code is not running.
Cool, would love to see the code. It would be very handy for some of my new boards