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Huh, this would be a fantastic option for my Kobo Touch. It freely flashes whatever firmware you give it, and it'll boot from an SD Card besides.
Interesting to see XTEINK here; hopefully it means they will be more open to community software initiatives.
I got an Xteink X4 a few weeks ago and love it. I've tried out a few different firmwares but haven't settled on one yet. I love the screen and how simple the interface is. It's kind of a pain in the butt getting my Kindle books on there, but worth the effort. It's also encouraging me to buy books outside of the Amazon ecosystem. I've been getting more stuff from Humble lately.
Love the idea and goal being all this but what an interesting time to be in. Phones are becoming bigger and bigger while the palm, neck, eye, head, etc sizes haven't really buzzed. Digital book readers are getting smaller and smaller while the book sizes… argh… I give up. It's pointless to try and make sense of digital/device trends at this point, or any modern trend for that matter.
Seems cool, ordered one. I like my Kobo but the ability to shove it in a pocket seems sweet.
The newly announced pro version with a front light looks prerfect for me.

Do you use it with a dictionary? I like the full 1 GB English wiktionary loaded in Aard2 on my Boox. It has etymology and can look up Latin and other non-English words. But I imagine it may be too heavy for a ESP32 device..

The new X4P would be great if it wasn't for the touch screen. I just want an X4 with a frontlight, no other changes. I like the front buttons!
can you use Calibre to put files on it?
Yes, but there are better ways depending on the firmware.
Please port this OS to older Kindles that Amazon no longer supports.
I've used CrossPoint on X4. I'm not sure how this is related (CrossPoint is linked in the footer)
I got an Xteink X 4 a few weeks ago and it's a very cute device. While I'm a fan of the hardware what's been really fun is noodling around with building some custom firmware and sync architecture to optimize content for the device's extremely limited CPU and Memory. That's meant a custom format for images and metadata that match the device's hardware and interface needs and an automatic ingest pipeline for building these files from common book/comic formats. Maybe some day I'll even read a book on the thing!
xteink seems to be everywhere these days. Did it really "kill doomscrolling" for anyone?
It did for me. I put it in my jeans pocket when I head out the door in the morning: grab backpack, phone in one pocket, reader in other. Then I actually read books in my queue to and from work. It’s the similar routine as grabbing my keys as I head out.
Does this can be installed kindle, like for very old versions?
Are there any instances from the closed e-book system (kindle, nook, etc..) where you paid for a book and the book was either updated to a revised version or just removed from the device because of the content in the book?
Sort of.

- I've often bought books with old/traditional covers which I like, but then a movie is made and the cover is "updated" to the movie tie-in version

- I've found at least one typo in pretty much every e-book I've ever read, and usually report them --- they rarely get fixed, which annoys me to no end (esp. if it's a copy were there cover has changed as noted above)

There's also the old news story about the kid who bought the pirated copy of _1984_ took class notes in it, and then had the copy deleted, which presumably is why when Microsoft took the ebook reader functionality out of Edge they issued checks to people who had used the note-taking functionality.

I searched for each of the supported eInk devices and they were all tiny. Anyone know if there is a larger reader (maybe Paperwhite size-ish) that might run this?
Perfect -- this is exactly the kind of project I was hoping to see gain some traction as of late.
I want this but for ePaper tablets like Remarkable.
i think i remember seeing an unlockable bootloader on the remarkable?
A Kobo ereader is as open as I need it with koreader installed. The Kobo Libra 2 black and white is the best ereader I have ever had. (not the color version,,unfortunately a step back in reading quality for normal reading)
this is about open hardware.

You really don't need to build a Kobo clone. By being open, you can fit your needs. If your needs are already covered by Kobo, that's fine.

Lots of the comments here are about porting to older kindles or eReaders, but the firmware is currently for the ESP32 chipset which none of these use.
Better than giving my money to Apple for sure.
I really like my Boox e-reader because I can install any android app on it. I run Storyteller on it and it syncs position to my storyteller server. So i can listen to the audiobook on my iPhone and then pick up reading on my Boox from where I was listening.
I contribute to Storyteller in my free time and I absolutely love using my Boox with it, honestly my dream reading setup.
Regard the Supported Devices table, where the last column declares all devices Full (in red). Firmware too chonky for any of them! Oh Claude.
Running Zotero (directly) is the big requirement for my next e-reader. Yeah, I can sync pdfs from my library with webdav or something else. But I want the full Zotero interface.
Wasn't the efficacy of the focus/bionic reading stuff disproven awhile back? Are people still using it?
Yeah idk why people dig it, but they do. Maybe placebo
Please add Gallery to your page :)
This is already dangerously cool. The second they add Kindle support, Free Ink is going from niche open-source project to “why is GitHub on fire?” territory.
The point of this seems to be building on open hardware. If you want open source software that builds on proprietary hardware, KOReader is what you want. (I use it, it's great.)
Are there any off the shelf e-readers which support this firmware? This site seems to be for people who want to solder together their own e-reader from components.

Also, it does a bit misleading to say "Charging, battery protection, an optional frontlight and a 24-pin e-paper interface, all on one PCB you can build for around $60." According to their own parts lists, if you are build 5 of these, you're in for $63.74 (plus shipping?) So if you want just one (like a normal person), it's going to cost more. And that's still just the circuit board and components: no mention of the outer plastic casing. (I can't find any info on their site about how to get that - presumably 3D print, but haven't found plans.)

Xteink ereaders do (available on Amazon) but just make sure to get the “developer edition” and you can flash the hardware.
They do ship directly to AU: https://www.xteink.com/

I way prefer ePaper over reading on my phone so I have both the x3 and the x4 and love both.

The x3 is so small it sticks to my phone via the charging magnet on the back so it goes everywhere my phone does.

The x4 is a bit bigger so a bit more readable but still smaller than an iPhone, so it’s easy to keep in your pocket or bag.

Hey trying to understand this better. Isn't $63 around $60? Maybe I'm missing something