Yes I do, and I have different devices of different generations in different sizes (ex: Xiaomi/Moaan Inkpalm and Inkpalm plus in the cellphone format, Boox and Fujitsu Quaderno in the A5 format, Sony and Boox in the A4 format....)

Right now, I'm preparing a first release of very basic Android tools that I use daily (mostly a good starting point for eink tweaking: a bash+vim configuration, cf https://github.com/csdvrx/bash-timestamping-sqlite for the bash part)

Next will be an optimized terminal to lower the latency by using the private eink APIs.

The basic principle is super simple: tolerate ghosting in an area with plenty of rewrites, but remove ghosting in static areas, using a invalidation matrix of the rows and columns of the screen in characters.

It will require some basic math, for ex: keep moving average of how many changes there were in the last 5 rolling seconds of any part of the matrix, do some basic minimization problem to define squares with most of the cells requiring redraws to use the eink fast refresh mode etc.

I never thought about a newsletter, but why not? It's a great idea to find other people with the same niche interest! What would you use to send it? Just BCC?

My email is my nickname at outlook dot com, give me your email and I'll add you to this newsletter!