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Mastodon: AboutGet the appKeyboard shortcutsView source codev4.4.0-nightly.2025-04-15

#epaper

7 posts5 participants1 post today
Continued thread
Public
Daniele Verducci 🧉
Nice to see the #esphome test card on an #eink display!
The way the colors are mapped is not in my code, but I can see how they make sense: the left part of the R box is a scale of reds clearer of 50% red, the right part are the darker ones. So it is posterized to white and red respectively.
It's interesting how the other colors are mapped to white. I imagine it makes sense, #epaper displays are a completely different beasts from a classic RGB display like an LCD...
Now to the pull request! I'd like my code to go in #mainline esphome!
[continues...]
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Daniele Verducci 🧉
So, here's my last #rabbithole : I bought an #epaper display to use with #esphome . It's a cheap #waveshare compatible 3 colour #e-ink (BWR, black white and red), the HINK-E075A01. Unfortunately I discovered that the esphome waveshare component supports only the B/W verson.
It works in black&white, but my #display is very slow due to the added red colour, and anyway I hate leaving features on the table...
So I decided to develop a driver, for an OS I barely know (esphome), in a language I barely know (C), for a platform I barely know (ESP32). I expected it to be fun 😅
[continues]
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Spar|fin|dig :: Jan :mastodon:

Ich hab eine Idee, aber keine Ahnung: Ich hätte gern einen Anstecker mit E-Ink-Display und Anzeigenwechsel per Knopfdruck. Also ein magnetischer oder ansteckbarer Button, der zwischen mindestens zwei Anzeigen wechseln kann.

Anwendungsbeispiele:
• "Ich nutze WERO" → Knopfdruck → QR-Code zum Bezahlen erscheint
• "Ich nutze Threema/Signal" → Knopfdruck → QR-Code zur Kontaktaufnahme erscheint
• Namensschilder mit wechselbaren Informationen
• Stimmungsanzeiger für nonverbale Kommunikation

Fragen an die #Fediverse-Community:
- Kennst Du ähnliche Projekte?
- Wer könnte so etwas umsetzen?
- Was sind realistische Kosten?
- Fallen Dir weitere Anwendungen ein?
- Welche #Hashtags sollte ich ergänzen oder ändern?

Meine Inspirationquelle:
linkedin.com/posts/timo-heck-9

Anstecker mit gelbem Hintergrund auf einem Hemd mit dem Text „Ich nutze WERO“.
#Wearables#EInk#WERO
Public
Brad Linder

E Ink introduces Marquee color display technology for outdoor signage. With a 4-particle color system it offers a wide range of colors. But with refresh times of 5-7 seconds, it's made for signage not eReders or tablets. #EInk #EInkMarquee #DigitalSignage #Displays #ColorEInk #EPaper eink.com/news/detail/E-Ink-Mar

E Ink Marquee™ Highlights Technological Breakthrough for Electrophoretic DisplaysE Ink Marquee™ Highlights Technological Breakthrough for Electrophoretic DisplaysE Ink Marquee™ Highlights Technological Breakthrough for Electrophoretic Displays at Touch Taiwan 2025. The first wide temperature, full color ePaper display designed for outdoor digital signage.
Public
Brad Linder

LILYGO T-Deck Pro is a mobile dev kit with an ePaper display, QWERTY keyboard, 4G and

Last summer LILYGO launched a pocket-sized mobile communications device called the T-Deck Plus that looks like a phone, but is really more of a mobile dev kit with a 2.8 inch IPS LCD display, a BlackBerry keyboard, and support for WiFi, Bluetooth, and LoRa wireless connectivity… but no support for cellular networks.

The new LilyGo T-Deck Pro is another mobile dev kit with a similar design […]

#devBoard #devKit #epaper #lilygo #lilygoTDeckPro #lora #tDeck #tDeckPro

Read more: liliputing.com/lilygo-t-deck-p

Public
Brad Linder

A Chinese company called Guangzhou Aoyi Electronics Technology has unveiled a 31.2 inch color E Ink display with support for 18 Hz screen refresh rates. While video looks choppy, it should be better suited to graphics than other E Ink digital signage/poster-sized screens. #EInk #EPaper #Aoyi ithome.com/0/840/654.htm

www.ithome.com广州奥翼发布全球首款 30 寸以上视频电子纸显示屏：彩色画面，18 帧 / 秒刷新 - IT之家IT之家从奥翼官方获悉，该产品已进入量产阶段，预计将在未来两个月内正式投放市场。
Public
dorotaC

Has everyone noticed?
Here in #Germany almost all #supermarkets use #epaper displays to show prices. They look great. It's hard to notice that it's not ink on dead trees.
That's thousands of displays per shop. Times thousands of shops in the entire country.

Some of those displays break or otherwise get replaced.

So there must be piles of used displays around the country... but where?
Does any of my fellow #hackers know how to get some of that #trash treasure?

#recycling#upcycling
Public
sven_md

Am Hannovermarkt im 20., scheint es neben konsumorientiert, auch passant*innen-freundlich dem Hunger den Kampf angesagt:

Hannah Maier über SAMY dem Ägypter mit Herz am solidarischen Fleck (statt links/rechts ...einfach mal"für Mitmenschen vorausblickend")
epaper.heute.at/titles/heutewi

Kennt ihr gabenzaun.de/orte/schwedenbruc

#2024

epaper.heute.atHeuteHEUTE Wien - 18-09-2024: WienHeute freudewien am Schwarzenbergplatz Sicherheitsüberprüfung dauert an Gutscheine gewinnen fürs Sommerschluss-Festival Parks der Stadt bleiben weiterhin geschlossen Food Trucks, Streetfood und Summervibes mitten in Wien: Von Donnerstag bis Sonntag findet am Schwarzenbergplatz das 1. Wiener Somm...
Continued thread
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Aaro Koskinen

This #ePaper seems to have 7 internal LUT sets for different temperatures. At 20'C refresh takes 4 secs. By fixing temp sensor to > 50'C, refresh takes 3.5 secs and there's no difference in picture.

I copied this "fast" table and started reducing iterations and frame counts so that picture quality still remains intact.

I've now reached < 1 s refresh, even for the full 648x480 and it still looks very nice. And now it's fast enough for simple #Linux terminal use!

#DIY#Computing#LowEnd
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Aaro Koskinen

This week's #ePaper #hacking status: Got partial updates working nicely (pixel-wise) on 15€ unbranded 5.83" WFT0583CZ61. It's just as slow as full refresh, but limits flickering to the updated area, like a single 8x16 char, so the other part of the screen remains readable during refresh.

Now I try to make custom LUTs to make it faster. Nice; all registers are documented but no mention about operation principle whatsoever. Typical trial-and-error #Linux driver programming.

#LowEnd#Computing
Public
Karsten Schmidt

Giving this whole (maybe weekly) #LinkDump thing a go (in lieu of [and so far successfully escaping] writing newsletters)

#Networks #Protocols #Privacy

Guide to securing your digital life and protecting your privacy
digital-defense.io

Computer Networks From Scratch
networksfromscratch.com

Obsidian notes about 100s of network concepts/topics
notes.networklessons.com/

Protocols for synchronisable data stores
willowprotocol.org/
earthstar-project.org/
try.st.imu.li/projects/vernode (via @tryst)

Social web translator (HTML, JSON, ActivityStreams, Atom, RSS etc.)
granary.io/

#CollapseComputing #FrugalComputing #VM #ConcatenativeProgramming

The Collapsible Project
wiki.collapsible.systems

CollapseOS & DuskOS
collapseos.org/
duskos.org

tiny-ps — Web component to display PostScript inside HTML
github.com/bellenuit/tiny-ps
belle-nuit.com/my-journey-to-p

#ESP32 #EPaper #Meshtastic

ESP32-S3 w/ 4.7" touchscreen E-paper display
docs.m5stack.com/en/core/paper

Lilygo T5 E-Paper S3 Pro
lilygo.cc/products/t5-e-paper-

Lilygo T-Deck Plus (Meshtastic, GPS, 2000mah battery)
lilygo.cc/products/t-deck-plus

#Art

Community (and partially solar) powered online E-ink art frame
omniframe.art/

Upcoming exhibition @ ZKM Karlsruhe which will also include a custom version of my own DeFrag piece
zkm.de/en/2025/04/the-story-th

Zimoun's sound architectures, installations & sculptures — always an inspiration on many levels...
youtube.com/watch?v=xx4Kx6R7nv

#TechCommentary

Kill the “User”: Musings of a disillusioned technologist
pastagang.cc/blog/kill-the-use

digital-defense.ioDigital Defense - The ultimate personal security checklist to secure your digital lifeThe ultimate personal security checklist to secure your digital life
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