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Comment by dan1234 | Hacker News Reader

Last time I looked into this, for a potential project, I found Waveshare seem to be the leaders for the hacker/hobby space.

They’ve got a nice 12.5” display (1304x984) @ $170, which is pricey but big enough for league tables.

https://www.waveshare.com/product/displays/12.48inch-e-paper...

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The refresh times on waveshare panels are bad enough to make them useless for most interesting applications. That particular panel takes 16s to refresh.

Hi,

Paperd.Ink has a refresh rate of 4s for full refresh and <1s for partial. We're working on lowering it further.

16s would be for a full refresh though. If you're making an information based display you might only need to change a small area per update, which would be faster (though I couldn't find. any refresh speed in the datasheet).

WaveShare supplied code only allows full resolution full refresh with half tones and everything.

IIRC someone figured how to expedite it but that someone had to.

Because it has 3 colors. Sometimes you can put them in two colors. For the Pwnagotchi project, the consensus has been that the Waveshare B&W v2 is the best [1].

Based on my own experience (I have one) I can say it has a high enough refresh rate, and little ghosting (none is impossible as costs too much battery to do full refresh).

Also, the UPS Lite, also from China (AliExpress or whatever), is excellent.

Do keep in mind this is a specific/different project, with a much smaller screen, meant to be portable (for on the go).

[1] https://pwnagotchi.ai/installation/#color-vs-black-white-e-i...

That one has red as well as black. They have a bunch more, mostly standard monochrome (a bit cheaper, and probably faster to update): https://www.waveshare.com/product/displays/e-paper/epaper-1....

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