[ehead]

In my experience, memory LCD has been a better technology to work with: https://www.sharpsma.com/sharp-memory-lcd-technology

No crazy +/- 40V lines, no external driver circuitry, and extremely low power. Not as low power as E Ink, but since you don’t need to drive wacky voltages, your power budget math will come out the same or better.

[robin_reala]

I’ve never seen one in real life. How are the display characteristics compared to eInk?

[ehead]

If you’ve ever seen an OG Pebble, you’ve seen that display. It looks like a better resolution gameboy display. Very little space between pixels.

Some models are different, though, and basically turn into a mirror when their pixels are turned on, rather than become matte black.

Adafruit sells a dev board for 25 bucks. Perfect for low power wearables, much better than E Ink.