I've not worked in this space, but see: https://news.ycombinator.com/item?id=17993174 https://news.ycombinator.com/item?id=17993174 and https://www.waveshare.n

I've not worked in this space, but see: https://news.ycombinator.com/item?id=17993174 https://news.ycombinator.com/item?id=17993174 and https://www.waveshare.net/w/upload/c/c4/E-paper-mode-declaration.pdf https://www.waveshare.net/w/upload/c/c4/E-paper-mode-declara... for a description of some available display modes within a waveform table, along with a description of the waveform firmware itself: The waveform flash memory file contains temperature look-up tables (LUTs), waveform sequence data, algorithm data, voltage data, controller settings, and manufacturing data. Each AF waveform is specifically adjusted for a particular display module lot. This specification document is for use by E Ink Corporation and their customers under non-disclosure agreements. E Ink Corporation will be responsible for maintaining and controlling specification revisions. To my knowledge, there are very few reverse engineered waveform files or custom controllers for eink displays, and those that exist have inferior display properties compared to the e-ink provided waveform tables.