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 :)



Do you have a link to an article or something about that?
I was interested in them but all the listings on AliExpress expressly said they didn’t support custom firmware. I started looking into it and it seems to be something theu did after they got popular.
Here’s some info, but a lot of it is scattered around online communities: https://pocketink.io/blog/xteink-locked-or-unlocked-buying-guide/
Thanks! I bought one months ago and flashed crosspoint at the time.
But nice that you can still flash them via SD card even if they are USB locked. I guess it would be difficult to fully lock them given they just run an ESP32
Update: I just saw that CrossPoint has has an affiliate link, and that if you buy the reader direct from the manufacture you can still get unlocked USB devices. It’s only on the international stores like AliExpress that you may get a crippled version. https://github.com/crosspoint-reader/crosspoint-reader