Desk-Mounted Pen & Tool Holder #3DPrinting #3DThursday

MoVig shares:

This desk mounted tool holder is designed to keep your most-used tools organized and within easy reach while saving valuable desk space.

Perfect for holding pens, weeding tools, scissors, craft tools, and other small accessories, this organizer mounts securely to the edge of your desk or work surface, making it ideal for craft rooms, home offices, workshops, and maker spaces.

download the files on: https://www.thingiverse.com/thing:7280432

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Every Thursday is #3dthursday here at Adafruit! The DIY 3D printing community has passion and dedication for making solid objects from digital models. Recently, we have noticed electronics projects integrated with 3D printed enclosures, brackets, and sculptures, so each Thursday we celebrate and highlight these bold pioneers!

Have you considered building a 3D project around an Arduino or other microcontroller? How about printing a bracket to mount your Raspberry Pi to the back of your HD monitor? And don’t forget the countless LED projects that are possible when you are modeling your projects in 3D!

LIVE CHAT IS HERE! http://adafru.it/discord

Adafruit on Instagram: https://www.instagram.com/adafruit

Shop for parts to build your own DIY projects http://adafru.it/3dprinting

3D Printing Projects Playlist:

3D Hangout Show Playlist:

Layer by Layer CAD Tutorials Playlist:

Timelapse Tuesday Playlist:

Connect with Noe and Pedro on Social Media:

Noe’s Twitter / Instagram: http://instagram.com/ecken

Pedro’s Twitter / Instagram: http://instagram.com/videopixil

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Collapsible Stack Organizer #3DThursday #3DPrinting

Shared by Mc2.project3D on MakerWorld:

I’m a neat freak and I love organizers, I didn’t want to do the usual box printed in full. I wanted a box that could be printed in a short time.

Download the files and learn more

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Every Thursday is #3dthursday here at Adafruit! The DIY 3D printing community has passion and dedication for making solid objects from digital models. Recently, we have noticed electronics projects integrated with 3D printed enclosures, brackets, and sculptures, so each Thursday we celebrate and highlight these bold pioneers!

Have you considered building a 3D project around an Arduino or other microcontroller? How about printing a bracket to mount your Raspberry Pi to the back of your HD monitor? And don’t forget the countless LED projects that are possible when you are modeling your projects in 3D!

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Survivalist Fishing Reel (2026 update) #3DThursday #3DPrinting

Shared by Baeoniq on Thingiverse:

A complete fishing kit including live bait and hook storage, easy-attach weighable bobber, and more.

This 2026 update includes several enhancements over my older models; it is built to be extremely sturdy and can be printed entirely without supports.

This hobo fishing reel kit is designed for anglers who prioritize portability without sacrificing functionality. The design allows you to bait a hook and cast a line in seconds, then anchor the reel to a tree or a stationary object using a lanyard. While the reel holds your spot, you are free to set up camp, prepare a fire, or simply enjoy the peace of the wilderness.

Download the files and learn more

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Every Thursday is #3dthursday here at Adafruit! The DIY 3D printing community has passion and dedication for making solid objects from digital models. Recently, we have noticed electronics projects integrated with 3D printed enclosures, brackets, and sculptures, so each Thursday we celebrate and highlight these bold pioneers!

Have you considered building a 3D project around an Arduino or other microcontroller? How about printing a bracket to mount your Raspberry Pi to the back of your HD monitor? And don’t forget the countless LED projects that are possible when you are modeling your projects in 3D!

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Sleek Case for Adafruit MacroPad RP2040 #3DPrinting #3DThursday

MStefan99_327078 shares:

A sleek and modern case to make your Adafruit macropad look professional

download the files on: https://www.printables.com/model/1695194-adafruit-macropad-case

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Every Thursday is #3dthursday here at Adafruit! The DIY 3D printing community has passion and dedication for making solid objects from digital models. Recently, we have noticed electronics projects integrated with 3D printed enclosures, brackets, and sculptures, so each Thursday we celebrate and highlight these bold pioneers!

Have you considered building a 3D project around an Arduino or other microcontroller? How about printing a bracket to mount your Raspberry Pi to the back of your HD monitor? And don’t forget the countless LED projects that are possible when you are modeling your projects in 3D!

LIVE CHAT IS HERE! http://adafru.it/discord

Adafruit on Instagram: https://www.instagram.com/adafruit

Shop for parts to build your own DIY projects http://adafru.it/3dprinting

3D Printing Projects Playlist:

3D Hangout Show Playlist:

Layer by Layer CAD Tutorials Playlist:

Timelapse Tuesday Playlist:

Connect with Noe and Pedro on Social Media:

Noe’s Twitter / Instagram: http://instagram.com/ecken

Pedro’s Twitter / Instagram: http://instagram.com/videopixil

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LIVE NOW! SHOW and TELL 4/29/2026 with @blitzcitydiy #ShowandTell @adafruit

The biggest and longest running worldwide online Show and Tell LIVE! Right now! 4/29/2026 at 7:30pm Eastern. – video.

Hosted this week by Liz Clark

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USB colors explained: why White, Black, Blue, or Red ports often cause confusion

Samir Bashir on igor’sLAB writes about an issue we all run into: USB port colors.

USB ports are one of those wonderfully everyday details that almost everyone sees but hardly anyone really questions—until suddenly the external SSD runs at a snail’s pace or the smartphone charges sluggishly when plugged into the “wrong” port. For years, the colors of USB ports have served as a quick guide.

Unfortunately, in practice, the whole thing is far less clear-cut than many YouTube tutorial videos suggest. That’s the real takeaway: The colors can help, but they aren’t a binding standard—and anyone who blindly relies on them will quickly plug into the wrong port.

White and black are historically mostly correct, blue is often a good indication of 5 Gbit/s SuperSpeed, and anything beyond that is increasingly just manufacturer folklore. That’s exactly why you should view port colors only as a first point of reference—not as a specification.

If you want to quickly know whether the port is suitable for an SSD, capture device, or docking station, you’re better off checking the label, the manual, or the datasheet directly. That’s less romantic than the old color theory, but significantly more reliable. And honestly: With USB, the naming conventions are already chaotic enough. You really don’t need to treat the paint on the port as a standard as well.

Read the whole text here.

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Easyduino: a repository of open source PCB devboards for KiCad

The Easyduino project by Marco Vazquez Madero is an effort to easily dive into different PCB designs of the most popular microcontroller devboards like Arduino, ESP32, Raspberry Pico and STM32 Bluepill (more to come!). Using the free and Open Source Software KiCad and adhering the best practices across the PCB and KiCad ecosystem. Also adding the much needed USB-C support!

The project was born out of the necessity to unify the wide variety of software, languages and conventions used in the most popular devboards. For example Arduino Uno was developed in Italy in 2010 using Eagle. The ESP32 devboard was developed in 2016, China, using Altium. The Raspberry Pi Pico 2040 was developed around 2021 in the U.K. using KiCad and Altium.

This project is distributed under the CERN Open Hardware Licence Version 2 – Permissive which means you are free to use any or all parts of this project with or without disclosing the source, even for commercial projects. As long as you include a copy of the CERN OHLv2 Permissive Licence.

See this project on GitHub.

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Custom Split Flap Display #raspberrypi

Adam G Makes’ finished electro-mechanical display, via YouTube

 

These days it’s fairly easy to procure a split flap display, at a price. Originally used for boarding times and digital clocks, the quirky display’s are full of retro charm, clacking through their alphanumeric digits until they arrive at the message. A quick search and you can find a electro-mechanical display for (gulp) $3,500.

In true maker fashion Adam G Makes opted to go his own way. Why spend hard earned cash on something when you can poor your heart, sweat, time (annnnnd a good chunk of money) into it? Adam found a comparable display for sale for $1000 and spent $850 on all his components. Really nice build using a Raspberry Pi, custom circuits, stepper motors and Hall effect sensors.

Based on:

Printable Split Flap by Morgan Manley: https://www.instructables.com/Split-Flap-Display-3D-Printed-Modular-Compact-Encl/

Split Flap Project by Scott Bezek: https://github.com/scottbez1/splitflap

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Making the “Next-Level” camera

Niccolò Venerandi writes about maximum camera aperture and field of view. And how to make a camera that gives both.

What if we want a giant aperture but with a wider field of view too? Well, we can’t.

The bigger the lens is, the bigger the cone of light is too. But also: the wider the field of view of a lens, the bigger the cone of light too.

And, the combination of wide-angle-view and super-high-aperture would literally require light to pass through the metal of the camera in order to reach the sensor.

In order to work around this, you’d have to quite literally tear your camera apart in order to expose the sensor. Somebody has done it, namely some “Stanley Kubrik” guy…

Check out the build video and use video and read all about it in the post here.

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Zach Wally Recreates Tokyo DisneySea’s Tower of Terror Vanishing Illusion

Don’t miss this video from Zach Wally if you want to learn about the history of disappearing acts and how combining 19th century stage tricks with modern technology can lead to some very cool results.

In the mood for a Disney inspired build of your own? Make NeoPixel LED Mickey Ears with NeoPixels or EL Wire!

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Amaze! Amaze! Speak with Rocky #piday #raspberrypi #ProjectHailMary

 

**Spoilers for Project Hail Mary***

I was surprised when the promotional material for Project Hail Mary heavily featured Rocky. I haven’t seen the film yet, but in the novel, the revelation of the alien companion is suspenseful and unexpected.

Regardless, if you’re a fan of either works, you’ll get a kick out of this LLM Pi-based Rocky friend. It uses a Raspberry Pi Zero, and a Whisplay hat. The LLM [Gemma 4] is run locally on MacBook Air. The project started off by getting the ‘voice’ right; a series of friendly tones written with Python

 

From Lahiru Maramba:

Bring the friendly Eridian Engineer to life! In this video, I build a physical version of Rocky from Andy Weir’s “Project Hail Mary,” complete with a “brain” powered by a local LLM (Gemma 4) and a custom face.

If you would like to build your own, you can find the code on Github, and the full build video on YouTube.

Edited: the Gemma 4 model runs on a MacBook Air locally, not on the Raspberry pi zero W.

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Looking to introduce your young engineer to Sci-Fi? We have a limited quantity of The Martian: A Novel – Classroom Edition – by Andy Weir

The Classroom Edition of The Martian includes:

• Classroom-appropriate language
• Discussion questions and activities
• Q&A with Andy Weir

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Each Friday is PiDay here at Adafruit! Be sure to check out our posts, tutorials and new Raspberry Pi related products. Adafruit has the largest and best selection of Raspberry Pi accessories and all the code & tutorials to get you up and running in no time!

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Adafruit Weekly Editorial Round-Up: CircuitPython 10.2.0, wili8jam PICO-8 port for Fruit Jam, & more!

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ADAFRUIT WEEKLY EDITORIAL ROUND-UP

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We’ve got so much happening here at Adafruit that it’s not always easy to keep up! Don’t fret, we’ve got you covered. Each week we’ll be posting a handy round-up of what we’ve been up to, ranging from learn guides to blog articles, videos, and more.

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BLOG

CircuitPython 10.2.0 Released!

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LEARN

Using a Raspberry Pi as a Router

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YOUTUBE

wili8jam PICO-8 port for Fruit Jam

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Catch up with us on the blog, in the Adafruit Learning System, and on YouTube.

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New nEw NEWs From Adafruit is an email newsletter sent out once a week to subscribers only. It features new products, special offers, exciting original content, and more. Sign-up NOW for the Adafruit weekly Newsletter here: https://www.adafruit.com/newsletter

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Raspberry Pi Powered C-3PO Head

Sam Potozkin’s interactive C-3PO Head, image via reddit

 

StarWars Day is almost here! What better way to celebrate than a chat with C-3PO. Samuel Potozkin put a lot of work into this build. Beyond the hardware, Potozkin pulled off a ton of prop building techniques to get a believable bot. The head alone required meticulous finishing of 3d printing parts to create the metallic finish.

Via Reddit:

I built a C-3PO head and integrated a Raspberry Pi system inside so you can actually talk to it and it responds in real time.

Here’s how it works:

Audio comes in through a MEMS mic
The Pi processes the input and generates a response
Output is played through an internal speaker
I also used an exciter instead of a traditional speaker so the sound comes through the shell instead of a visible driver.

This was my first time using a raspberry pi for anything and it took some tweaking. But I’m happy with how it turned out.

Very thorough walkthrough video via YouTube:

Project Repository:

https://github.com/spotozkin/threepio

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BMO AI Agent Upgrades

image via brenpoly / be-more-agent, GitHub

 

Back in February we first came across brenpoly’s BMO project on YouTube. Since then, there have been two new updates! Check out brenpoly’s voice and brain update and the movement and autonomous Steam library launch update. More info over on GitHub

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Kindle Typewriter

Roni Bandini shares how they turned a jailbroken Kindle into a neat typewriter. Check out how they did it on hackster.io

The Kindle docks into an enclosure that integrates a thermal printer. Both the Kindle and the Raspberry Pi connect to the same WiFi network.

Text is typed on a custom Kindle application. When two line breaks are entered, the buffered text is sent over HTTP and printed. The system handles line width to avoid breaking words, and also stores previously printed texts.

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A Six-Servo Robot Dog

James Bruton built this cool robot dog using an Arduino Uno and R/C servos. Check out the repository on GitHub!

This is the first in a series of designs that you can build. All of my projects are open source, but most people don’t actually build things like the AT-AT you can ride on, or ball-wheeled bikes.
So it’s time for a series of smaller more accessible projects, and the first one is a fun robot dog, and it’s really easy to understand how it works. I’m using basic parts like an Arduino Uno and standard R/C servos, and this design is in two sizes, one using standard sized R/C servos and the other using the smaller 9g servos.

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FAA’s Drone Safety Day 2026 #drone #DroneSafetyDay

Image banner from Federal Aviation Administration

 

FlySafe, FlySmart, FlyReady. Saturday, April 25, 2026 is Drone Safety Day. This annual campaign from the FAA encourages safe piloting. The safer the hobby the more it can be open for everyone to enjoy!

Drone Safety Day (DSD) is the FAA’s annual campaign dedicated to educating the drone community on the importance of safe and responsible drone operations. This one-day event highlights how the FAA and the drone community work together to safely integrate drones into the National Airspace System, transforming the way we live and work.

We encourage all members of the aviation community to host in-person, virtual and hybrid events to celebrate drone safety.

FlySafe, FlySmart, FlyReady. Encourages drone pilots to prepare before takeoff, understand the rules, and make safety the top priority every time they fly.

Learn more from the FAA and the National Center for Autonomous Technologies!

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We deliver the latest news, products and more from the Unmanned Aerial Vehicles (UAV), quadcopter and drone communities. Drones can be used for video & photography (dronies), civil applications, policing, farming, firefighting, military and non-military security work, such as surveillance of pipelines. Previous posts can be found via the #drone tag and our drone / UAV categories.

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Solderless RGB LED Clips guide

Hook up RGB LED strip easily and without soldering! These clips make it super simple to affix two strips together, either with an extension or a coupler, and third option allows easy connection to a power supply and controller.

Check out the simple guide and buy solderless clips!

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flying bird {with fun flexi fidget wings} #3DThursday #3DPrinting

Shared by TuesdayIsMyFavorateDayOfTheWeek on Thingiverse:

Download the files and learn more

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Every Thursday is #3dthursday here at Adafruit! The DIY 3D printing community has passion and dedication for making solid objects from digital models. Recently, we have noticed electronics projects integrated with 3D printed enclosures, brackets, and sculptures, so each Thursday we celebrate and highlight these bold pioneers!

Have you considered building a 3D project around an Arduino or other microcontroller? How about printing a bracket to mount your Raspberry Pi to the back of your HD monitor? And don’t forget the countless LED projects that are possible when you are modeling your projects in 3D!

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Bathtub Toy: A Park Duck Boat That Won’t Sink #3DPrinting #3DThursday

尾料终结者 shared this print on Makerworld! Learn more and download files: https://makerworld.com/en/models/2682984-bathtub-toy-a-park-duck-boat-that-won-t-sink#profileId-2971681

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Every Thursday is #3dthursday here at Adafruit! The DIY 3D printing community has passion and dedication for making solid objects from digital models. Recently, we have noticed electronics projects integrated with 3D printed enclosures, brackets, and sculptures, so each Thursday we celebrate and highlight these bold pioneers!

Have you considered building a 3D project around an Arduino or other microcontroller? How about printing a bracket to mount your Raspberry Pi to the back of your HD monitor? And don’t forget the countless LED projects that are possible when you are modeling your projects in 3D!

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Large Skadis mount pen holder #3DPrinting #3DThursday

BlaeceAelf shares:

I got tired of the basic (or with weakly designed tabs) skadis pen/pencil holders so I put this one together.

Simply put, it works. It works well. It’s large. It holds lots of pens and pencils and markers, or other things.

I like it…you should like it too.

download the files on: https://www.thingiverse.com/thing:7314250

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Every Thursday is #3dthursday here at Adafruit! The DIY 3D printing community has passion and dedication for making solid objects from digital models. Recently, we have noticed electronics projects integrated with 3D printed enclosures, brackets, and sculptures, so each Thursday we celebrate and highlight these bold pioneers!

Have you considered building a 3D project around an Arduino or other microcontroller? How about printing a bracket to mount your Raspberry Pi to the back of your HD monitor? And don’t forget the countless LED projects that are possible when you are modeling your projects in 3D!

LIVE CHAT IS HERE! http://adafru.it/discord

Adafruit on Instagram: https://www.instagram.com/adafruit

Shop for parts to build your own DIY projects http://adafru.it/3dprinting

3D Printing Projects Playlist:

3D Hangout Show Playlist:

Layer by Layer CAD Tutorials Playlist:

Timelapse Tuesday Playlist:

Connect with Noe and Pedro on Social Media:

Noe’s Twitter / Instagram: http://instagram.com/ecken

Pedro’s Twitter / Instagram: http://instagram.com/videopixil

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LIVE NOW! SHOW and TELL 4/22/2026 with @blitzcitydiy #ShowandTell @adafruit

The biggest and longest running worldwide online Show and Tell LIVE! Right now! 4/22/2026 at 7:30pm Eastern. – video.

Hosted this week by Liz Clark.

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CircuitPython 10.2.0 Released!

From the GitHub release page:

This is CircuitPython 10.2.0, a minor revision of CircuitPython, and is a new stable release.

Highlights of this release

• New audiotools.SpeedChanger.
• New qspibus support for displayio.
• Stability improvements to USB SD card handling.
• Merge of MicroPython v1.27.
• Update to ESP-IDF v5.5.3.
• Many additions to the Zephyr port.
• Simulated hardware testing is now being done in the Zephyr port.

Download from circuitpython.org

Firmware downloads are available from the downloads page on circuitpython.org. The site makes it easy to select the correct file and language for your board.

Installation

To install follow the instructions in the Welcome to CircuitPython! guide. To install the latest libraries, see this page in that guide.

Try code.circuitpython.org or the latest version of the Mu editor for creating and editing your CircuitPython programs and for easy access to the CircuitPython serial connection (the REPL).

Documentation

Documentation is available in readthedocs.io.

Port status

CircuitPython has a number of “ports” that are the core implementations for different microcontroller families. Stability varies on a per-port basis. As of this release, these ports are consider stable (but see Known Issues below):

• atmel-samd: Microchip SAMD21, SAMx5x
• cxd56: Sony Spresense
• espressif: Espressif ESP32, ESP32-C2, ESP32-C3, ESP32-C6, ESP32-C61, ESP32-H2, ESP32-S2, ESP32-S3
• nordic: Nordic nRF52840, nRF52833
• raspberrypi: Raspberry Pi RP2040, RP2350
• stm: ST STM32F4 chip family

These ports are considered alpha and will have bugs and missing functionality:

• analog: Analog Devices MAX32690
• broadcom: Raspberry Pi boards such as RPi 4, RPi Zero 2W
• espressif: , ESP32-P4
• litex: fomu
• mimxrt10xx: NXP i.MX RT10xxx
• renode: hardware simulator
• silabs: Silicon Labs MG24 family
• stm: ST non-STM32F4 chip families
• zephyr: multiplatform RTOS, running on multiple chip families

Changes since 10.1.4 and 10.2.0-alpha.1

Fixes and enhancements

• Fix web workflow background callback handling. #10966. Thanks @dhalbert.
• Fix sdcardio.SDCard regression that failed to init some cards. #10956. Thanks @dhalbert and @bablokb.
• Update frozen libraries. #10945, #10853, Thanks @dhalbert and @FoamyGuy.
• Merge MicroPython v1.27 into CircuitPython. #10931. Thanks @dhalbert.
• Fix palette length validation in _stage. #10904. Thanks @deshipu.
• Add audiotools.SpeedChanger. #10900. Thanks @todbot.
• Add mcp4822 SPI DAC support. #10895. Thanks @todbot.
• Improve USB SD presentation, sdcardio implementation, displayio bus sharing. #10887. Thanks @dhalbert.
• Add arg validations in various bitmaptools methods. #10884. Thanks @FoamyGuy.
• Merge 10.1.x fixes. #10877, #10839. Thanks @dhalbert.
• Fix handling of full-width glyphs in lvfontio. #10865. Thanks @FoamyGuy.
• Added displayio qspibus support. #10844. Thanks @ppsx.

Port and board-specific changes

Analog Devices

Broadcom

Espressif

• Change USB task priority to be the same as the CircuitPython task. #10887. Thanks @dhalbert.
• Fix BLE startup crash. #10858. Thanks @tannewt.
• Update to ESP-IDF 5.5.3. #10840. Thanks @tannewt.

i.MX

Nordic

renode

RP2

• Fix i2ctarget bugs. #10933. Thanks @FoamyGuy.
• Fix i2ctarget start bug. #10474. Thanks @MarkEbrahim.

SAMx

SiLabs

Spresense

STM

• Move SPI deinit code to prevent crash. #10926. Thanks @ChrisNourse.

Zephyr

• Fix flash size on Feather RP240. #10960. Thanks @FoamyGuy.
• Enable jpegio, getpass, adafruit_bus_device, hashlib, zlib, aesio, msgpack. #10952, #10949, #10943, #10939, #10932, #10927. Thanks @FoamyGuy.
• Add nvm support. #10918. Thanks @tannewt.
• Add Adafruit Feather RP240. #10925. Thanks @FoamyGuy.
• Add Adafruit Feather nRF2840 Sense. #10923. Thanks @tannewt.
• Add Raspberry Pi Pico, Pico W, Pico2, Pico2 W. #10917. Thanks @tannewt.
• add audiobusio.I2SOut support. #10916. Thanks @tannewt.
• Zephyr port and build fixes. #10912, #10911, #10863, #10860, #10859. Thanks @tannewt.
• Allow building and uploading native_sim .exe. #10897. Thanks @tannewt.
• Add heap statistics tracking to native_sim. #10869. Thanks @tannewt.
• Add zephyr_display to support fixed Zephyr displays. #10868. Thanks @tannewt.
• Implement _bleio scanning, advertising, connect, and disconnect. #10862, #10833. Thanks @tannewt.
• Add TCP neworking support. #10847. Thanks @tannewt.
• Test simulated hardware using perfetto traces. #10846. Thanks @tannewt.
• Handle time simulation without using yields. #10834. Thanks @tannewt.

Individual boards

• Adafruit QT Py ESP32-S3 4/2 and 8/0: reduce default WiFi power to 15 dBm. #10921. Thanks @jesseadams.
• Cytron Maker Pi RP2040: add GP29 pin definitions. #10893. Thanks @CytronTechnologies.
• uGame S3: slow down SPI to avoid display glitches. #10837. Thanks @deshipu.

Documentation changes

• Fix typo in tim.monotonic_ns(). #10950. Thanks @tannewt.
• Explain SD card initialization more thoroughly. #10962, #10947. Thanks @mikeysklar.
• Correct return type in busio.I2C.probe(). #10891. Thanks @FoamyGuy.

Build and infrastructure changes

• Update CI actions to Node.24 versions. #10910. Thanks @dhalbert.
• Fix ReadTheDocs build warnings. #10907. Thanks @dhalbert.
• Add support for user-supplied build configuration files: user_pre_mpconfigport.mk, user_post_mpconfigport.mk, user_post_circuitpy_defns.mk. #10817. Thanks @bablokb.

Translation additions and improvements

New boards

• Pimoroni Badger2350. #10929. Thanks @bablokb.
• Pimoroni Explorer RP2350. #10778. Thanks @tyeth.
• TinyCircuits Thumby and Thumby Color. #10851, #10303. Thanks @tannewt.
• Waveshare ESP32-S# Touch AMOLED 2.41″. #10844. Thanks @ppsx.
• WeAct Studio RP2350B Core. #10646. Thanks @cvmanjoo.
• Xteink X4. #10873. Thanks @BlitzCityDIY.

Known issues

• ESP32-C6 networking is not working well.
• The CIRCUITPY drive is not working on at least some STM32 boards.
• Native-code .mpy files are not working. This capability is currently enabled only on the winterbloom_sol board.
• See https://ift.tt/Z7CH2JT for other issues, including issues still to be addressed for:
  • 10.2.x
  • 10.x.x
  • 11.0.0
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Thanks

Thank you to all who used, tested, and contributed toward this release, including the contributors above, and many others on GitHub and Discord. Join us on the Discord chat to collaborate.

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Printed Neurons Communicating with Living Brain Cells

To move closer to a biological model, Mark Hersam’s team developed artificial neurons using soft, printable materials that better mimic the brain’s structure and behavior. The backbone of that advance is a series of electronic inks. Photo by Mark Hersam via Northwestern University

Engineers at Northwestern University printed artificial neurons capable of communicating with the brain.

In a new study, the Northwestern team developed flexible, low-cost devices that generate electrical signals realistic enough to activate living brain cells. When tested on slices of tissue from mouse brains, the artificial neurons successfully triggered responses from real neurons, demonstrating a new level of biocompatibility.

The work marks a step toward electronics that can communicate directly with the nervous system, with potential applications in brain-machine interfaces and neuroprosthetics, including implants for hearing, vision and movement.

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The 80386 memory pipeline

nand2mario on The Small Things Retro blog discusses the 80386 microprocessor memory pipeline:

The FPGA 386 core I’ve been building now boots DOS, runs applications like Norton Commander, and plays games like Doom. On DE10-Nano it currently runs at 75 MHz. With the core now far enough along to run real software, this seems like a good point to step back and look at one of the 80386’s performance-critical subsystems: its memory pipeline.

32-bit Protected Mode was the defining feature of the 80386. In the previous post, I looked at one side of that story: the virtual-memory protection mechanisms. We saw how the 80386 implements protection with a dedicated PLA, segment caches, and a hardware page walker. This time I want to look at virtual memory from a different angle: the microarchitecture of the memory access pipeline, how address translation is made efficient, how microcode drives the process, and what kind of RTL timing the design achieves.

On paper, x86 virtual memory management looks expensive. Every memory reference seems to require effective address calculation, segment relocation, limit checking, TLB lookup, and, on a miss, two page-table reads plus Accessed/Dirty-bit updates. Yet Intel’s own 1986 IEEE ICCD paper, Jim Slager’s Performance Optimizations of the 80386, describes the common-case address path as completing in about 1.5 clocks. How did the 386 pull that off?

The answer is that virtual memory is not really a serial chain of checks, even if the diagrams make it look that way. It is a carefully overlapped memory pipeline that uses pre-calculation, pipelining, and parallelism to keep the common case surprisingly short.

Read more in the post here.

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Codex hacked a Samsung TV

Calif.io on GitHub documents how they gave Codex a foothold on a Samsung television. Then it popped root.

We started with a shell inside the browser application on a Samsung TV, and a fairly simple question: if we gave Codex a reliable way to work against the live device and the matching firmware source, could it take that foothold all the way to root?

Codex had to enumerate the target, narrow the reachable attack surface, audit the matching vendor driver source, validate a physical-memory primitive on the live device, adapt its tooling to Samsung’s execution restrictions, and iterate until the browser process became root on a real compromised device.

We didn’t provide a bug or an exploit recipe. We provided an environment Codex could actually operate in, and the easiest way to understand it is to look at the pieces separately.

See the details of the exploits in the post here and on GitHub.

 

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Cyber Gotchi: From Tamagotchi to Modern Digital Life

This fun project from Thai maker Yakroo will speak to anyone who grew up in the 90s:

In this project, we will build Cyber Gotchi, a digital life system that evolves from a simple virtual pet concept into a physical interactive device.

The system simulates a living digital creature with real-time internal states such as hunger, energy, and health. These states affect its behavior and appearance through animation, sound, and physical output.

Unlike traditional digital pets that exist only on a screen, Cyber Gotchi extends its “life” into the real world using hardware.

More details here on Instructables.

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Adafruit Weekly Editorial Round-Up: CircuitPython 10.2.0-rc.0, ESP-NOW Walkie Talkies, One Key QT Py ESP32 demo and more!

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ADAFRUIT WEEKLY EDITORIAL ROUND-UP

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We’ve got so much happening here at Adafruit that it’s not always easy to keep up! Don’t fret, we’ve got you covered. Each week we’ll be posting a handy round-up of what we’ve been up to, ranging from learn guides to blog articles, videos, and more.

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BLOG

CircuitPython 10.2.0-rc.0 Released!

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LEARN

ESP-NOW Walkie Talkies

See the full guide here!

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YOUTUBE

One Key QT Py ESP32 demo

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Catch up with us on the blog, in the Adafruit Learning System, and on YouTube.

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New nEw NEWs From Adafruit is an email newsletter sent out once a week to subscribers only. It features new products, special offers, exciting original content, and more. Sign-up NOW for the Adafruit weekly Newsletter here: https://www.adafruit.com/newsletter

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Use MicroPython to Add a Custom Sensor to a Robot Kit

Give an HP Robots Otto Kit the gift of hearing. With two ears (microphones) the bot will turn towards a noise. This project shows how to design some parts to 3d print, and then use MicroPython and Thonny with the board, and some circuit design, to make a robot that listens for a loud sound and then turn in that direction. Thanks for sharing!. Via NLAB:

The Otto kit is a cool concept from Moravia Education. It comes with a main printed circuit board containing an ESP32-WROOM microcontroller, and connections for continuous drive motors, line following sensors, an ultrasonic rangefinder, and an LED ring. It can be programmed with an online app, or with MicroPython. It also comes with a rechargeable Lipo battery, USB cable, and some O-rings and a screw driver, but that is it, no robot body! The idea is that you design and 3d print your own robot, and then program it to do a task. I love this idea, because it takes away one of the three difficulties when making a little mobile robot: you need to come up with electronics, mechanical parts, and code. Doing all three is difficult, especially as a beginner, so providing the electronics is a huge help. But I wanted to demonstrate that you aren’t limited to using just the parts that come with the kit, so I designed a custom sensor to add on to my robot.

Learn more!

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Tech Talkies Made a Voice-Controlled Robot Dog

Make a yourself a fun lil hypoallergenic bud that doesn’t require walks like Tech Talkies did using their code on GitHub

I built a voice-controlled quadruped robot dog using the Seeed XIAO ESP32S3 and ESP-Skainet on-device speech recognition. No cloud, no phone, just say the wake word and give it a command. It can sit, lie down, stretch, walk, dance, and even wag when you say “good boy.”

Read more

Or make yourself a robotic AI bear using ChatGPT.

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Fashionably on Task: a Smart Bracelet for Forgetfulness #Wearable

Exposed circuitry mounted on a brass frame makes for a striking ePaper bracelet. The ESP32 based wearable reminder connects to will keep track of 5 important daily to-dos. From CMoz on Instructables.

Are you ready to wear your productivity on your sleeve—literally? Welcome to a project that proves jewellery can be as smart and functional as it is stunning!

Created as a collaborative project for the Instructables Jewellery Competition (always motivated by these competitions!), this tutorial will show you how to build a Wi-Fi-enabled, tri-color ePaper to-do list bracelet.

See the full guide!

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We’re bring you the blinkiest, most fashionable, innovative, and useful wearables from around the web and in our own original projects featuring our wearable Arduino-compatible platform, FLORA. Be sure to post up your wearables projects in the forums or send us a link and you might be featured here!

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