The local Micro Center was closing out these boards a a while back - PaPiRus e-ink displays - for about 1/3 the retail cost. I purchased every one they had at the time.

There was some issues with the code in the Git repository at that time, so I set them aside. Now? It works just fine. Running on a !raspberrypi 2B !rpi  https://sealion.club/attachment/848945