this post was submitted on 14 Jul 2026
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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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[–] kkj@lemmy.dbzer0.com 16 points 5 hours ago (4 children)

Why would you pay $150 for a 4.26" ESP32- based eReader when you could get a 4.26" ESP32-based eReader for $70 or less? The XTEink X4 is already available.

[–] anon_8675309@lemmy.world 1 points 39 minutes ago

Front light

[–] lunarwire@lemmy.world 2 points 1 hour ago (1 children)

I recently picked up an Xteink X4 for $55. Flashed the Crosspoint firmware on it. Crosspoint just works and has no bloat. I love being able to set the device and send books via the self-hosted web interface. Sending books via wifi from Calibre works too.

Buttons on the reader are nice. I actually prefer not having a touchscreen for something so small. I do wish it had a front light though. This turned out to be the less-expensive-non-Android-just-an-ereader alternative to Boox that I was searching for. Loving it so far.

[–] roofuskit@lemmy.world 1 points 13 minutes ago

Can it access OPDS feeds?

[–] Grass@sh.itjust.works 1 points 5 hours ago

I'd be inclined to get the cheaper one and port the firmware if the new one is better, or someone else will almost certainly make a new one that takes the best features of both.

[–] slickgoat@lemmy.world 3 points 4 hours ago (1 children)

But can you get books to read on it? I suspect that these gadgets will get locked out of the market by the thugs.

[–] partofthevoice@lemmy.zip 3 points 4 hours ago

These gadgets were locked into the market, locked out of everything else. Usually, how these things go, the community version supplies interfaces for downloading content from third parties.

Lock the gadgets out all they want. That’ll only make more interest around having all the popular new books available on platforms that thugs can’t control.

[–] Siethron@lemmy.world 5 points 5 hours ago (1 children)

Why did I read that as 150 buttholes?

[–] ShinkanTrain@lemmy.ml 114 points 10 hours ago* (last edited 10 hours ago) (2 children)

Why buttonless? I like buttons.

Heck, a scroll wheel would be a killer feature so I don't smudge the screen with my disgusting oils

[–] Rai@lemmy.dbzer0.com 26 points 9 hours ago (3 children)

Buttons and scroll wheels cost more than touchscreens at this point… 90s me wanted touchscreens on everything, and me since maybe 2015? has been firmly “bring back buttons”

…whenever they started replacing useful things that SHOILD be buttons always (car) with touch things. Absolutely not bueno.

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[–] PalmTreeIsBestTree@lemmy.world 2 points 5 hours ago (1 children)

My Kobo only has a power button and it’s perfect for my needs.

[–] oats@piefed.zip 6 points 4 hours ago (1 children)

My kobo has a power button, and two page turn buttons and its perfect for my needs.

Seriously, I have 4 (5 if you count the ancient kindle DX) ereaders, and the kobo is the only one I use. Will never again buy one without buttons

[–] PalmTreeIsBestTree@lemmy.world 1 points 2 hours ago

It’s not that hard to tap the screen to turn a page lmao

[–] sentient_loom@sh.itjust.works 58 points 10 hours ago (1 children)

But I want buttons. Without buttons I always do the wrong gesture.

[–] Pantrygheist@programming.dev 4 points 7 hours ago

I read on a kindle on my bed before going to sleep, and everytime I stretch or turn over the font size changes or it advances a couple of pages. It's slowly driving me insane.

[–] zod000@lemmy.dbzer0.com 39 points 10 hours ago (3 children)

Why is "buttonless" being said like a good thing?

[–] Evotech@lemmy.world 10 points 7 hours ago (1 children)

It’s a fact? It has no buttons. God or bad

[–] zod000@lemmy.dbzer0.com 6 points 5 hours ago

Yes, but my point was that it was stated in a way like a feature being touted as opposed just a statement of fact, Maybe my impression was wrong, but "buttonless" immediately put me off from the device.

[–] Allero@lemmy.today 6 points 8 hours ago (4 children)

Because buttons take space, reducing space available for the screen that has, well, the book.

The good sensor is the answer, IMO. I only wonder how should it turn on and off, then.

[–] oats@piefed.zip 5 points 4 hours ago

Having a space with no display where I can actually hold the reader makes it so much better, for me

[–] Bane_Killgrind@lemmy.dbzer0.com 4 points 7 hours ago (1 children)

Hall sensor/ reed switch and it turns off when it's idle or the case closes?

[–] Allero@lemmy.today 2 points 5 hours ago
[–] prole@lemmy.blahaj.zone 5 points 8 hours ago (3 children)

Buttons can go on the side or back...

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[–] wewbull@feddit.uk 5 points 6 hours ago

I'm looking for an open source ReMarkable alternative. A4 sized preferably. Any options out there?

[–] Creat@discuss.tchncs.de 39 points 10 hours ago (3 children)

That screen is absolutely tiny.

[–] Kjell@lemmy.world 2 points 5 hours ago

I wouldn't mind if my phone was 4,2" but I want a bigger screen for reading books. Like the size of A5 or even A4 paper.

[–] zod000@lemmy.dbzer0.com 16 points 9 hours ago (12 children)

I actually just got one of these things (https://www.xteink.com/products/xteink-x4) that has a 4" screen (WITH BUTTONS) for $55 on Amazon and I kinda love it. I think my perfect phone would be something this size with GrapheneOS support and a headphone jack.

[–] oats@piefed.zip 2 points 4 hours ago

Read so much about that thing. Make it 100$, give it a backlight and WiFi and I'll buy three...

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[–] mesamunefire@piefed.social 5 points 7 hours ago* (last edited 6 hours ago)

If anyone wants to see the old project: https://hackaday.io/project/192688-the-open-book

Its been around for a bit. The newest iteration looks like its trying to be more like kindle.

GH page: https://github.com/joeycastillo/The-Open-Book

I forget where but the developer goes over the cost of the physical hardware a couple of years ago somewhere. Its kinda expensive to make your own open source ebook reader from mostly scratch.

I like this version: https://www.oddlyspecificobjects.com/projects/openbook/

[–] lIlIlIlIlIlIl@lemmy.world 14 points 10 hours ago (1 children)

I flashed my Kobo and have a pretty similar experience now. Except with a decent size screen.

[–] YoiksAndAway@piefed.zip 13 points 10 hours ago (2 children)

I've had a Kobo Clara BW for about 2 years. I use it almost every day and I love it. I think it was about $140 when I bought it. They go for $160 now, but I think the bigger screen makes it a better buy than this e-reader. I love crowd-funded projects, but Kobo is a better option, imho.

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