this post was submitted on 14 Jul 2026
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481
A $150 Buttonless, Open Hardware Answer to Kindle is being crowdfunded by Open Book Touch (itsfoss.com)
submitted 19 hours ago by FirmDistribution@lemmy.world to c/technology@lemmy.world
86 comments fedilink hide all child comments
 

cross-posted from: https://lemmy.world/post/49429587

URL for the crowdfunding: https://www.crowdsupply.com/oddly-specific-objects/open-book-touch

Specs:

  • Display: 4.26" e-paper touchscreen, 480 × 800 px, warm + cool frontlight
  • Processor: ESP32-S3 dual-core, Wi-Fi + Bluetooth LE
  • Memory: 16 MB flash, 8 MB PSRAM
  • Formats: EPUB and plain text, no DRM
  • Storage: microSD card slot
  • Interface: USB-C with integrated LiPo charging
  • Dimension: 78 × 120 × 10 mm, about 85 g
  • Open source: MIT-licensed firmware, open hardware (to be released at shipping)

It also has a replaceable 800 mAh battery, I found it cool :)

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[–] zod000@lemmy.dbzer0.com 2 points 13 hours ago (1 children)

The x3 is actually slightly newer too, but I was already wary of the 4" size so I went for the x4. It ended up being just fine though.

[–] flandish@lemmy.world 1 points 12 hours ago (1 children)

yeah. my x3 seems to fit fine in my notebook holder next to my 3x5 craft paper notebooks. or shirt pocket. i might change to x4 once they start shipping again but i have already read a bunch on the 3 … its size may work out fine. i daily carry an iphone 15 the small one.. and i think thats similar in size to the x4?

[–] zod000@lemmy.dbzer0.com 1 points 11 hours ago (1 children)

The x4 is smaller than any semi-recent smartphone I am familiar with, but maybe. The x4 is smaller than a 3x5 card, so this has me doubting that the x3 is truly smaller.