this post was submitted on 14 Jul 2026
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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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[–] flux@lemmy.ml 1 points 3 days ago

ESP32-S3 seems rather properly sized computing power -wise for this kind of device. And it's quite low-power as well.

Granted there are some tasks where even this kind device could use some computing, like extracting, indexing and rendering pdfs.