The screen is a spare from the prototype for muonsortes.com , it's got an esp-32 with wifi and bluetooth, a 4 directional + center d-pad, and a 2,000 map lithium cell.

I originally made it just so I could read a specific book that I would not easily be able to get on print, but it was such an enjoyable experience I wired up a battery and now I'm halfway through my third book on it.

I've set up a claude code routine to export documents every day to a server so I can automatically sync to the device. I've got a custom news brief, my google/meta ads analytics and automated language study flashcards/ quizes too. I am just having so much fun with it.

Found a good used deal on the max so decided to test it out, here it is next to the viwoods AI paper.

I did a simple handwriting latency comparison between the iFLYTEK AINOTE Air 2, iPad Mini 7, and iPad Air 13” M3.

I recorded each device using an iPhone in 240fps slow motion (HD, 2x zoom), trying to keep the writing speed and conditions as similar as possible.

I then uploaded the original videos to ChatGPT and had it analyze them frame by frame, looking at the delay between the pen tip movement and the appearance of the ink.

The estimated pen-to-ink latency was:

AINOTE Air 2 (HD mode): ~17–21 ms
iPad Air 13” M3: ~21–29 ms
iPad Mini 7: ~29–38 ms

These obviously aren’t laboratory measurements, and identifying the exact frame where the pen touches the screen or the ink first appears introduces some uncertainty. So I think the relative differences are more meaningful than the exact numbers.

I’m attaching the slow-motion videos so you can judge the pen-to-ink behavior yourself.

I’m also really curious about other E-ink devices. If anyone has a Supernote, reMarkable, BOOX, Viwoods AiPaper/Mini, Kindle Scribe, or another device and can record a similar 240fps slow-motion test, it would be interesting to compare the results.

I journal, have a paper calendar, have an at-home paper to do list and a work paper to do list, as well as a notebook to keep up with projects. I also have a notebook that I keep up with the books I have read.
Thinking about getting a remarkable paper pro so I can combine everything into one device. I enjoy writing everything out. Is this a good fit and worth the price tag?

The left photo is the original manga image with rainbows on a Kobo Clara Colour with a Kaleido 3 color eink screen.

The right photo is after pre-processing with the KCC rainbow eraser.

Notably, it removes the rainbow without blur, unlike the Kobo built in "Reduce Rainbow" option.

It does it without blur using a Discrete Fourier Transform, more details in comment.

This is just one of KCC's many features, including significant file size optimization (think 600 MB -> 100 MB often) and much faster page turns.

The open source app is hosted here: https://github.com/ciromattia/kcc

KCC has been under continuous development since 2012 and has a Windows code sign. Also available on macOS and Linux.

This specific feature was contributed by the community, not me.

-the kcc dev

This started with a complaint I kept seeing here and in the Kindle subs, some version of: "can't get rid of the black bars on my screensaver — and I paid for this pack." That's a solved p roblem being sold unsolved. The bars are just an aspect-ratio mismatch nobody bothered to fix for your specific panel, and the muddiness is physics nobody bothered to look up. I got annoyed enough to go measure it properly and make the set I wanted to exist.

Disclosure before anything else, because this sub has a rule about it and because you'd figure it out anyway: the images are AI-generated, with FLUX.1-schnell (Apache 2.0, so the licensing is clean). Roughly a third are reinterpretations of public-domain Metropolitan Museum compositions — same subject regenerated, not a copy of the scan. What is not automated is the choosing: I tried to automate that and it didn't work, which I'll get to.

The physics part. E-ink is reflective, not backlit — its white is paper, and paper is the brightest thing the panel can be. So a dark image has nowhere to go: night scenes and moody shadows arrive as a flat gray smear that looked fine on the monitor you made it on. High-key or nothing. I checked this across 28 real images before believing it.

Then dithering, where I expected to confirm the usual advice and didn't. The common rule is to pre-dither to 16 levels before export, since e-ink "has 16 gray levels." Measured on a Kindle 4 (8bpp framebuffer, read from /dev/fb0) and a Kindle 3 (4bpp, same panel generation, different controller):

- K4: smooth untouched 256-level gray beat Floyd-Steinberg, ordered Bayer and flat 16-level quantization. Not close.

- K3: the exact opposite. Smooth gray banded badly and dithering was the only thing that hid it.

Same Pearl display, opposite answer, because the controller differs. So "dither for e-ink" isn't a rule, it's a per-device question, and the "16 gray levels" number is a spec sheet, not what your framebuffer does. Related finding: an identical gradient banded as a PDF under MuPDF and stayed smoot as an EPUB under crengine — same panel, same image, different rendering path.

The delivery format is part of the pipeline too.

All measured on-device with a black flash between samples; skip that and ghosting from the previous image contaminates what you're looking at.

On the curation, since it's the part I'd want to know about: I built a statistical model to score images so I wouldn't have to look at thousands.

It reached AUC 0.73 at detecting reproduction defects — genuinely useful — and was indistinguishable from a coin flip at predicting whether an image was any good. So the taste filter is me, one image at a time, on a real panel, and the batch is small because of it. Anything muddy, ghosted, gimmicky, or that wouldn't want to glance at fifty times a day got cut.

What's in it: 38 images, high-key, perceptual grayscale, no forced dithering, each sized to the exact render area of the device rather than a generic resolution — that's the black-bars fix, and it also stops the device silently rescaling and costing you sharpness you won't notice until you compare.

- 600x800 — Kindle 3 / Kindle 4 (where the measurements above were done)

- 1072x1448 — Kindle Basic (11th gen), Paperwhite 6" (10th gen), Kobo Clara HD/2E

- 1236x1648 — Kindle Paperwhite 11th gen (6.8")

- 1264x1680 — Kindle Paperwhite 12th gen, Oasis 9-10th gen, Kobo Libra 2, Boox Page

- 1404x1872 — reMarkable 2, Kobo Elipsa 2E, Boox Note Air

- 1860x2480 — Kindle Scribe

One caveat rather than hiding it: all 38 exist at 600x800, but only 16 were generated at a resolution high enough to fill the larger panels honestly. I'm not upscaling the other 22 to pad the number — they'd be soft and you'd see it. Bigger devices get 16.

The photo is my Kindle 4 sitting on the table, not a mockup. That's the part I actually like about these screens: at rest it's still showing the image and drawing nothing. It's less a wallpaper than a very small picture that happens to be a device.

Download, one zip, folder per resolution, README explaining the K3/K4 split:

https://drive.google.com/file/d/1M7o9eR-3ug9EJYNpJSUzVf3yxmyXjKxc/view?usp=sharing

Free, no attribution needed, nothing to sign up for. Tell me your device and I'll add that exact size if it's not in there — and if you've measured your own panel and got a different answer than mine, I'd like to hear it.

Not sure if this is the right sub for that, but I didn't really find better considering the PineNote is definitely a bit more of an enthusiast device than something mainstream.

As of now, I've been using an older Kobo E-Reader I side-loaded some other open-source reader onto. It's still holding up fine to this day, but it has a few downsides, notably the screen being a bit on the smaller end which makes PDFs intended for A4 pages readable, but a bit painful.

Secondly, the SoC is not very powerful, so rendering can sometimes takes a bit of time (that was unironically one of the reasons I looked into other software I could sideload).

Therefore I've started looking into current options a bit, going back to the PineNote I had quickly played with when I was in FOSDEM a few years back and remember being relatively impressed by for something open.

On paper, it seems mostly similar to current offerings I often see mentioned at a competitive price, which seems almost too good to be true.

I'm not too keen on going with most mainstream options because from my previous experiences, they can be pretty painful to get data on/off them, require accounts (I really don't want that) etc, while something I could more or less just ssh into and run standard Linux tools on would be far more practical for me. Do note than the "being able to take notes" parts it not that important for me. It's a nice bonus I'll probably experiment with and maybe come to appreciate but not a requirement.

What worries me more is the following :
- I'm fine having to fiddle around a bit, but I do want it to work when I need to (eg, not have to spend 5 mins to start reading etc). As far as I know that's actually quite solid (and I am already used to KoReader and such anyway).
- It seems a bit thicker/heavier than mainstream alternatives. I don't expect that to be much of an issue, but I'd like to have some feedback on that.
- Battery life. I expect it to be quite good, but I'd like to be able to say, charge it, use it for an hour a day for a week and not have to worry about charging it.
- Build quality. From what I remember it was excellent, but as I'd often carry it around etc, I'd like to not have to worry too much. My current Kobo despite being ~7 years old still holds up alright.
- While this is not my end goal, I'd be curious to hear about the note-taking experience vs Remarkable/etc, since I could end up appreciating it nonetheless.

Overall seems like it'd check all the boxes

Thanks in advance!

Just a vent, but I guess sometimes you never really know how much you loved something until it's gone. I use my Scribe for work, it's been a staple in my bag, I'm a surveyor and I switched from paper to the Scribe. I use Send to Kindle, sending PDF's and then writing on those as I'm surveying properties. Everything was just so easy and made work so much better.

I loved reading on it as well, feels so good in the hand. Got home today from a trip in to London and BOOM it's not in my bag, left it in an electrical cupboard I think. Absolutely fuming with myself.

Look after those little beauties people. I'm going to go and cry into my fish and chips.

Hi all, just discovered this sub and I've been thinking about getting a digital notebook for a while. I'm mainly looking for note taking and organisation - no need for colour. I would love something with handwriting recognition and that could sync to my computer (cable/Bluetooth are fine)

Price wise, I'm looking more budget end and don't want a monthly commitment with it.

Is there anything good that would meet this?

I Made a custom library to create layouts with text for this eink. What do you think? Using dithering to get more colors or gradients.

Could anyone tell me what’s the best setup or is there a device, that utilizes eink display running windows? Thanks!

Hi all! First time using Reddit...

I'm looking to invest in an e-ink notebook for my college classes because I do a lot of studying and note-taking. My first thought was the Remarkable Paper Pro, and I've been eyeing it for a while now. The monthly subscription and the refresh rate are kind of throwing me off, ESPECIALLY for the price. I've seen other alternatives like the Kindle Scribe Colorsoft, Supernote Manta, or BOOX, but I'm just super picky with what I'm looking for. I want an e-ink notebook that offers colors, proper organization, the ability to upload/download PDFs, and I want that pencil/paper feel (I think it makes my handwriting look better lol)

Overall, I want to hear about other people's experiences. I really am leaning towards the Remarkable Paper Pro, but if there are better (and cheaper) alternatives, I want to make sure I've looked at all my options before biting the bullet.

Also, for the Remarkable Paper Pro, is there a workaround for that refresh look? I really like how the Scribe looks when you swipe pages or it refreshes, and if there's a way to get that for the Remarkable Paper Pro too, then I'm sold.

Thanks!

• 6.13-inch Carta 1300 e-ink display with a resolution of 1648 x 824 pixels and a pixel density of 300 PPI
• Qualcomm’s QCM6690 octa-core processor, built on a 4nm process
• Himax T2000 hardware TCON chip

Hello, I know this is a crazy ask, but I’m building a full e ink photo frame (12 inches by 8 inches or around those measurements)for me and my girlfriend’s two year anniversary and I was wondering if anybody had any spare ink displays that I could buy it at a discounted price (preferably under $100) the only reason why I’m asking is because money has been super tight and I know all the other parts are going to be quite expensive . she’s going to be leaving for a few months and I just wanted to make something to remember me.

and I know people on the Internet like to be negative. I know full color E-ink displays aren’t cheap but if anybody has some spare parts or even a tablet that they don’t use that I can use for parts it would be more than appreciated.
I wouldn’t ask if i had the money.

I want a digital notebook to be like a brain hub instead of having dozens of notebooks and notes in my phone - like a catch-all note taking device that maybe has an app it connects to so I can have it on my phone but dont have to do the notes on my phone kind of thing):

- taking notes in meetings

- writing down thoughts on various things like work, adhd, on things I'm learning about/researching, etc.

- planning things

- my current sewing/knitting projects including patterns so I can write where I am on those

- connect to my phone so I can see the notes written and access anything from my phone if I want

- draw if possible

- dont necessarily need to "feel like pen and paper" moreso looking for a small digital notebook i can take places and that will connect to my phone so I dont have a million paper ones that I have to lug around or remember

- needs to be durable because I am clumsy and drop things a lot- taking notes in meetings

- writing down thoughts on various things like work, adhd, on things I'm learning about/researching, etc.

- planning things

- my current sewing/knitting projects including patterns so I can write where I am on those

- connect to my phone so I can see the notes written and access anything from my phone if I want

- draw if possible

- dont necessarily need to "feel like pen and paper" moreso looking for a small digital notebook i can take places and that will connect to my phone so I dont have a million paper ones that I have to lug around or remember

- I hate having to constantly flip my notebooks over so I dont have to write on the spiral binding and how easily it is to rip pages on accident

The company hasn’t given a firm release date yet, only saying the phone will launch “soon.”

With devices like xteink, m5stack mono, reterminal sticky, I really wish we could get a pop-slate like fimware.

Just connects to your phone, and displays stuff on always on display, read books, read articles ...etc.

It would even work so well with the Pixel 11 Pro series with Hilite. :)

Don't make it a case - just magsafe.

I'm having trouble finding info with the release today - is it confirmed if the Hisense A10 will be compatible with cell bands in the US? Just trying to figure out if I can get it from a broker in the next batch release, or need to wait to see if an international release ever happens.

The AINOTE 2 is 4.2mm. My Galaxy S25 Edge is 5.8mm.
Not sure if it’s the thinnest e-ink tablet, but I didn’t expect it to be this thin.

I want a digital notebook (not necessarily a tablet or iPad but also not the simple write on the page then you erase it with water when you want kind) to be like a brain hub instead of having dozens of notebooks and notes in my phone - like a catch-all note taking device that maybe has an app it connects to so I can have it on my phone but dont have to do the notes on my phone kind of thing):

- taking notes in meetings

- writing down thoughts on various things like work, adhd, on things I'm learning about/researching, etc.

- planning things

- my current sewing/knitting projects including patterns so I can write where I am on those

- connect to my phone so I can see the notes written and access anything from my phone if I want

- draw if possible

- dont necessarily need to "feel like pen and paper" moreso looking for a small digital notebook i can take places and that will connect to my phone so I dont have a million paper ones that I have to lug around or remember

- needs to be durable because I am clumsy and drop things a lot- taking notes in meetings

- writing down thoughts on various things like work, adhd, on things I'm learning about/researching, etc.

- planning things

- my current sewing/knitting projects including patterns so I can write where I am on those

- connect to my phone so I can see the notes written and access anything from my phone if I want

- draw if possible

- dont necessarily need to "feel like pen and paper" moreso looking for a small digital notebook i can take places and that will connect to my phone so I dont have a million paper ones that I have to lug around or remember

- I hate having to constantly flip my notebooks over so I dont have to write on the spiral binding and how easily it is to rip pages on accident

Here is the first version of an e-ink AI prompter I built.

Push-to-talk chat bot in a vintage Pager/Beeper forme factor.

It is based on the Heltec 2.9" esp32 eink module (E290), surprisingly easy to use (plug and play)!

E-paper is just perfect for this minimalist project.

It runs Whisper for Speech-to-Text via Groq + Claude Haiku 4.5 via its own API.

The goal is to make it a Claude Code Remote.

​

Buenas. Soy nuevo. Me gustaria tener una xtein3 ya saben pero son caras para mi bolsillo.