The new Xteink X4 mini e-reader

Folks like Ryan Peterman are getting their hands on the new tiny e-ink reader, the X4 from Xteink.

Finally got my hands on a mini e-reader (Xteink X4) and flashed it with Crosspoint firmware. Had Claude Code write a script for sending internet articles to it over wifi Also added some custom lock screen quotes.

It connects to your WiFi, and if you flash it with crosspoint you can transfer files over the local network

Ryan posted some Python code here.

The Verge has a review here. Lifehacker looked at the X4 here.

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REMINDER: SHOW and TELL 2/4/2026 with @blitzcitydiy #ShowandTell @adafruit

The biggest and longest running worldwide online Show and Tell LIVE! Today, 2/4/2026 at 7:30pm Eastern. – video.

Hosted this week by Liz Clark.

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Rosa Parks Birthday, 2026 #BlackHistoryMonth #RosaParksDay

Happy Rosa Parks Day! There are a few different days to celebrate #RosaParksDay. December 1st commemorates the anniversary of her arrest in 1955,  and many locations observe the Monday after her birthday.  Today, though, would have marked what would have been Rosa Park’s 113 birthday.

via ABHM:

Learn more about Rosa Parks, her experiences on the bus in Montgomery, Alabama, and her role in the Civil Rights movement. Discover how the Montgomery Bus Boycott affected the bussing system. Several books and films offer insight to this day in history and the Civil Rights movement to follow.

• Quiet Strength: The Faith, the Hope, and the Heart of a Woman Who Changed a Nation by Gregory J. Reed and Rosa Parks
• Rosa Parks by Rosa Parks
• She Would Not Be Moved by Herbert R. Kohl
• Boycott (2001)
• Selma (2014)

You can also visit the Rosa Parks Museum at Troy University.

Rosa Parks and the Montgomery Bus Boycott via PBS:

This interview with civil rights activist Rosa Parks describes her role in the Montgomery Bus Boycott. On December 1, 1955, Parks refused to give up her seat to a white man on a bus in Montgomery, Alabama. Her refusal sparked a massive bus boycott that lasted 381 days, ending on December 21, 1956, after the United States Supreme Court ruled that racial segregation on city buses was unconstitutional.

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The TMP119 is the most precise-iest temperature sensor ever? 🌡️

New year, new proto! We’re getting our pants on (metaphorically) and here’s a first new proto to kick things off

The TMP119 has ±0.03°C (typical) accuracy from 0°C to 45°C…that’s wild precision for a little breakout board. It’s very much like our existing TMP117, so we just tweaked the PCB for this teeny DSBGA-8 footprint.

We’re going to see how hard it is to pick & place this tiny part, but it was requested and it looks pretty nifty! As always, it’s got our Stemma QT connectors on board for easy I2C daisy-chaining.

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JP’s Product Pick of the Week — 4pm Eastern TODAY! 2/3/26 @adafruit #adafruit #newproductpick

Come on by for JP’s Product Pick of The Week ! A new product pick will be revealed. The show airs at 4pm ET / 1pm PT, TODAY!

Check out the livestream right here inside this product page you won’t want to miss it because there will be a HUGE DISCOUNT during the show!

Tune in for:

• • John Park’s latest product pick
  • Learn how to use it
  • Live Demo

The live video will also be on YouTube LIVE, Twitch, Periscope (Twitter) and Facebook. LIVE TEXT CHAT IS HERE in the Adafruit Discord chat! Come on into the chat to participate in the conversation!!

Every Tuesday @ 4pm ET/1pm PT!

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Raytracing on the Sega Saturn #CanItDoRaytracing

XL2 (Sega Saturn homebrew) Raytracing test via YouTube

 

While modern consoles chug at the thought of raytracing, YouTuber XL2 demonstrates how they pulled it off on the Sega Saturn, a console over three decades old. More from Gizmodo:

But wait, what is raytracing, and why’s it so difficult to implement? In the most basic sense, it’s one of the ways by which a computer can work out how objects in a three-dimensional scene are lit. In real life, light bounces around a scene, with different surfaces and materials absorbing, reflecting and/or scattering different amounts of light. Raytracing works by simulating this process, with the renderer tracing the path of a number of rays emitted by the scene’s camera through a given number of bounces to see if they intersect a light source. (In real life, of course, the rays go from light source to camera, but in a renderer it’s more efficient to trace them in the opposite direction.)

XL2 (Sega Saturn homebrew) Raytracing test:

The room you see has no static light, but the raytracing could be used for adding dynamic raytraced lights on top of the static light sources. I only update 1/4 the vertices per frame. When a vertex fails the test, I smoothly darken it back to 0. When it passes, it goes full bright right away. I don’t do any fancy tests right now for the light (like using the surface’s normal or the light’s distance), so it could look better with a bit more maths. Now, for indirect lights : I do keep a per face PVS of what face affects what other faces. I just need to find a way to integrate it a reasonable speed on the Saturn.

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Until someone cracks raytracing on the Fruit Jam you can still enjoy some DOOM.

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Professor Sarah Chasins Answers Coding Questions

UC Berkeley Computer Science Professor Sarah Chasins joins WIRED to discuss coding.

UC Berkeley Computer Science Professor Sarah Chasins joins WIRED to answer the internet’s burning questions about coding. How did programmers code the first ever code? What remnants of the early World Wide Web still exist online? Can someone still learn programming if they hate math? How do new programming languages get made? Why is debugging harder than writing code? How can computer scientists contribute to CRISPR?

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