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joshstrangelast Tuesday at 2:28 PM5 repliesview on HN

e-ink is so much fun, especially when combined with ESP32 or BTLE boards. I currently have 4 around my house displaying book quotes that I've highlighted in KOReader and they bring me joy each time I see them. They are simple and do one thing very well.

I just got and setup a BTLE e-ink driver the other day and according to my calculations it will last _years_ on a single charge (2000mAh) even with multiple refreshes per day (crazy compared to the Wifi ones). Year+ lifetime completely changes the calculus for where to put these IMHO.

I'm considering designing a multiple-screen "art" piece to hang on my wall and playing around with various ideas (on both content and design).

LLMs + 3D Printer + e-ink is my new favorite hobby.


Replies

wallst07yesterday at 10:41 AM

For hanging as art, just found this https://github.com/dmellok/el133-pico-driver

Uses a native C driver instead of python so you can run the display off a battery as it's more efficient.

buffet_overflowlast Tuesday at 2:46 PM

Years on a wall mounted eink screen sounds super interesting. What are you using for the power delivery/battery side of that setup?

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mikepurvislast Tuesday at 8:02 PM

Thanks for speaking to the battery question; I'm very interested in how to run this kind of thing (the display portion at least) cordlessly too, especially when lipo pouches in that range are so dirt cheap.

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tranceylclast Tuesday at 3:41 PM

When it does run out, are you able to replace the battery? Or is it something way more painful than that?

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dzhiurgistoday at 12:54 AM

I want a Japanese woodprint inspired colour dashboard for my Home Assistant. I don't need it at all, but I want it so badly. Some sketches I did with chatgpt look amazing.

Colour e-ink are kinda small tho. Something like samsung frame tv might be better option.