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E-Ink/E-Paper displays make for great low-power displays that are daylight visible and keep their image even when depowered. For folks who want to DIY their own E-Ink setups, this is a 2.13″ diagonal 250×122 Monochrome or Gray eInk / ePaper Bare Display.
Chances are you’ve seen one of those new-fangled ‘e-readers’ like the Kindle or Nook. They have gigantic electronic paper ‘static’ displays – that means the image stays on the display even when power is completely disconnected. The image is also high contrast and very daylight readable. It really does look just like printed paper!
Please note: this is the bare display element. You need to plug it into a board with a ‘standard’ 24-pin FPC e-paper connector. We recommend checking out and picking up a matching driver board:
This is a 2.13″ monochrome/4gray display. It has 250×122 black ink pixels and a white-ish background. It uses the SSD1680Z chipset, so make sure whatever firmware code you are planning to use has support for it. The Arduino library we wrote does all the work for you, you can just interface with it as if it were an Adafruit_GFX compatible display.
Note that you can put this display into a ‘4-gray’ mode, where you get two monochromatic shades. It’s not officially supported by the display, but it does kinda work. Check out our guide on dithering for how to get the best output from these panels.

Dale Dougherty, founder of Make:, writes about the difficulty of continuing to produce designs under open source hardware licenses for 3D printing.
Is China using the patent system to gain total control of 3D printing?
At FAB25 Conference in Prague this week, which was held less than a mile from the headquarters of Prusa Research, Josef Průša said in his keynote that China’s aggressive pursuit of 3D printing patents since 2020 was a “minefield” that was killing open source hardware in 3D printing. He wrote in more detail on his blog, saying that “Open hardware in 3D printing is dead – you just don’t know it yet.”
Průša pointed out there are very few 3D printer manufacturers with viable businesses outside of China. Průša Research is an exception. Ten years ago, nearly every country had its own 3D printing company.
Dougherty also discusses Arduino and the differences in Open Hardware vs. Open Source Software.
A good read! Catch it here.
Celebrate the Blues all summer in Memphis!
Memphis is celebrating the 100th birthday of the late B.B. King, September 16, 2025. Join us in honoring The King of the Blues with 100 days of events starting June 8!
A DIY Weather Station from Timothy Mwala on Hackster.io:
The AHT20 sensor delivers precise temperature and humidity readings, while the BMP280 adds temperature, barometric pressure, and altitude data. The Carenuity C3 Mini ties it all together, updating the OLED display every 5 seconds with readings from both sensors. With its straightforward I2C connections and ready-to-use code, this project is perfect for quick assembly and experimentation.
Why It Works
Since the AHT20, BMP280, and OLED all use the I2C protocol, the triple adapter acts as a hub, linking them to the C3 Mini without additional wiring. This not only speeds up assembly but also reduces the chance of wiring mistakes.
Software Requirements
To program and run this project, you’ll need the following tools and libraries:
- Arduino IDE: The environment for coding and uploading to the C3 Mini.
- BMP280_DEV library: Enables communication with the BMP280 sensor.
- AHT20 library: Facilitates reading data from the AHT20 sensor.
- Adafruit_GFX library: Provides graphics support for the OLED display.
- Adafruit_SSD1306 library: Controls the OLED display hardware.
- FreeSans9pt7b font: A custom font included with Adafruit_GFX for better text rendering.
When it came to measuring humidity, the DHT11 and DHT22 sensors dominated the market. These were super cheap, readily available, and had ready-to-go Arduino libraries. Tons of guides were published using these sensors as demos.
Fast forward to now. The microcontroller market has evolved significantly.
We’ve got the New nEw NEW for you right here
New Products 7/23/25 Feat. Adafruit MagTag 2.9″ Grayscale E-Ink WiFi Display – 2025 Ed. w/ SSD1680
This week we debuted 4 New Products.
Keep up with all the new at Adafruit.com/NEW.
Want to get new products info beamed straight into your inbox? New nEw NEWs From Adafruit is an email newsletter sent once a week to subscribers only. It features new products, special offers, exciting original content, and more. Sign-up for the Adafruit weekly Newsletter here: https://www.adafruit.com/newsletter
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

Are you programming in Python on small devices? Would you like to?
The Python for Microcontrollers Newsletter is the place for the latest news involving Python on hardware (microcontrollers AND single board computers like Raspberry Pi).
This ad-free, spam-free weekly email is filled with CircuitPython, MicroPython, and Python information that you may have missed, all in one place!
You get a summary of all the software, events, projects, and the latest hardware worldwide once a week, no ads! You can cancel anytime.
It arrives about 11 am Monday (US Eastern time) with all the week’s happenings.
And please tell your friends, colleagues, students, etc.

It’s almost GLOWTIME again. Too soon? NEVER. You’ve got 100 days to wire up your most spooktacular projects.
Need ideas? Check out past blog posts or dive into Adafruit Learning System for terror-ific inspiration
Its never too early to shop for that special ghoul.
Get spooky with a magical halloween coffin that holds a surprise inside. A 2-way mirror and an array of animated lights creates a face-blending illusion, melting your face into a creepy skeleton or other Halloween monster. You can also prop this up and blend two human faces together, creating a very creepy and surreal experience.
Dive into the wonderful world of Scalable Vector Graphics with this introduction from Josh W. Comeau. Josh lays out the basics and sets the groundwork for those looking to explore this powerful tool for graphic design.
SVGs are also pretty intimidating. The rabbit hole goes deep, and it’s easy to get overwhelmed.
So, in this blog post, I want to share the most important fundamentals, to provide a solid foundation you can build on. I’ll show you why SVGs are so cool, and share a few tricks you can start using right away.
At its core, SVG (“Scalable Vector Graphics”) is an image format, like .jpg or .gif. We can pop them into an
tag, like any other image
The Pixel Framebuf library makes drawing to a grid of NeoPixels or DotStars as easy as writing to a display. The library has all of the drawing functions of the original framebuf library, including the ability to draw lines, circles, rectangles, and text.
This library can be used on a wide variety of NeoPixel and DotStar LED layouts including with flexible and non-flexible matrices, NeoPixels strips laid out by hand, or FeatherWings. This library has been tested to work with both CircuitPython Microcontrollers and Blinka on the Raspberry Pi.
Every Tuesday is Art Tuesday here at Adafruit! Today we celebrate artists and makers from around the world who are designing innovative and creative works using technology, science, electronics and more. You can start your own career as an artist today with Adafruit’s conductive paints, art-related electronics kits, LEDs, wearables, 3D printers and more! Make your most imaginative designs come to life with our helpful tutorials from the Adafruit Learning System. And don’t forget to check in every Art Tuesday for more artistic inspiration here on the Adafruit Blog!How information is displayed matters. I can be concise or chaotic, forthright or misleading, and it can be…beautiful. The Information is Beautiful awards pay tribute to some amazing work done in data visualization:
From thought-provoking journalism to cutting-edge interactive tools, the winning projects represent the very best in data design today. Chosen by a panel of expert judges from nearly a thousand global submissions, these works stand out not just for their mastery of the craft of data visualization and storytelling, but for their impact, innovation, and clarity.
The entry showcase is also worth a scroll
What pv does is sit in the middle of a pipeline and display a progress bar, so you can have some idea of whether a long-running process is actually processing, and how much longer you’ll have to wait for it to finish. It’s great for things like copying big disk images to SD cards.
So ok, I thought, I have this PiTFT display. What if I made a pipeline viewer out of the Pi and stuck it on top of my regular monitor?
The Android Earthquake Alert (AEA) started in 2020 and is on by default with most Android phones. By utilizing the built in accelerometers Google has developed a global network for earthquake detection.
This is a clever and use of resources. Earthquakes and (earthquake-like events) happen in almost every region. Most detection systems are, rightfully, concentrated along tectonic hotspots.
Learn more from arstechnica:
If you’re the owner of an Android phone and live in a seismically active region, there’s a chance your phone has popped up an unusual warning. Not one that asks for permission to share personal information, or potential malware, but something far more serious: There’s an earthquake nearby, and you have up to a minute or two to get to a safer location.
In practical terms, AEA is distributed as part of the core Android software, and is set to on by default, so it is active in most Android phones. It starts monitoring when the phone has been stationary for a little while, checking for acceleration data that’s consistent with the P or S waves produced by earthquakes. If it gets a match, it forwards the information along with some rough location data (to preserve privacy) to Google servers. Software running on those servers then performs the positional analysis to see if the waves are widespread enough to have been triggered by an earthquake.
Reported on from the Science journal Global earthquake detection and warning using Android phones
and more from Google: How Android Earthquake Alerts System Works
The LSM303 breakout board combines a magnetometer/compass module with a triple-axis accelerometer to make a compact navigation subsystem. The I2C interface is compatible with both 3.3v and 5v processors and the two pins can be shared by other I2C devices. Combined with a 3-axis gyro such as the L3GD20, you have all the sensors you need for a complete IMU (Inertial Measurement Unit) for use in aerial, terrestrial or marine navigation.
We’ve got the New nEw NEW for you right here
New Products 7/16/25 Feat. Adafruit 2.13″ 250×122 Quad-Color eInk / ePaper Display w/ SRAM
This week we debuted 6 New Products.
Visit www.adafruit.com/new for more info.
Want to get new products info beamed straight into your inbox? New nEw NEWs From Adafruit is an email newsletter sent once a week to subscribers only. It features new products, special offers, exciting original content, and more. Sign-up for the Adafruit weekly Newsletter here: https://www.adafruit.com/newsletter
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
Linux is making gains on the major platforms, primarily, Windows and macOS. For the first time Linux has surpassed 5% of the US desktop market share. The findings come form Statcounter.
Via WebProNews:
Linux has surpassed 5% desktop market share in the US (5.03% in June 2025), per StatCounter, driven by privacy concerns, rising costs of Windows/macOS, and user-friendly distros like Ubuntu. Community celebrates amid gaming and enterprise boosts, though challenges like software gaps persist; analysts eye 7% by 2027.
StatCounter’s metrics, which track web usage across millions of sites, indicate that Linux’s U.S. desktop share climbed steadily through 2024 and into 2025, propelled by events like Microsoft’s controversial Windows 11 updates and the end-of-life for Windows 10. OSTechNix highlights how this 5.03% figure positions Linux ahead of Chrome OS in some segments, with global shares approaching 4.5% when excluding specialized variants.
What’s better than our tri-color E-Paper displays? Quad-color of course! This is a 2.13″ 250×122 Quad-Color eInk / ePaper Bare Display.
Chances are you’ve seen one of those new-fangled ‘e-readers’ like the Kindle or Nook. They have gigantic electronic paper ‘static’ displays – that means the image stays on the display even when power is completely disconnected. The image is also high contrast and very daylight readable. It really does look just like printed paper!
Please note: this is the bare display element. You need to plug it into a board with a ‘standard’ 24-pin FPC e-paper connector. We recommend checking out and picking up a matching driver board:
This is a 2.13″ quad-color (red, black, yellow, and white) display. It has 250×122 black, red, and yellow ink pixels and a white-ish background. It uses the JD79661 chipset, so make sure whatever firmware code you are planning to use has support for it. The Arduino library we wrote does all the work for you, you can just interface with it as if it were an Adafruit_GFX compatible display.
Note that you cannot overlay/mix pixels: each point can be one of the four colors but you can’t like mix the red and yellow to make an orange. Instead, check out our guide on dithering!
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Check out John Park’s new Learn Guide, Knobby Sequencer
Make your own 16-step MIDI sequencer for real-time synthesizer jams! This CircuitPython-powered project uses a QT Py RP2040, four Adafruit seesaw-based Quad Rotary Encoder breakouts for note input/mutes, and a set of NeoPixel sticks for display indicators.
Double-click the first encoder knob to enter settings mode where you can:
- adjust the tempo
- pick octaves
- transpose keys
- select scale modes
- dial in velocity
- randomize notes and mute states
Plug the Knobby Sequencer into any computer software synth, or hardware synthesizers that support USB MIDI Host mode.
Read more at Knobby Sequencer

If your project is moving a lot of power around, and efficiency is key, an Adafruit LM73100 Ideal Diode breakout is a great way to keep your power budget tidy! As long as your power supply is 3~23V DC and up to 5A, use this in place of a diode to keep current flowing one direction. However, unlike a diode, you won’t suffer a 1V+ forward drop which just gets lost as heat. Instead, the internal chip has two back-to-back FETs, with a typical Rdson of 30 mΩ. That means that even with 5A, you’ll lose around 150mV. This makes it perfect for efficiency-sensitive setups like solar panels and LiPoly batteries.
The Adafruit LM73100 Ideal Diode Breakout guide has everything you need to get started with this breakout. There’s pages for overview, pinouts, CircuitPython, Arduino and resources for download.
Read more at Adafruit LM73100 Ideal Diode Breakout
The Engineering Experience shared this video on Youtube!
We are going deep into an exciting project that I’ve been working on: designing and building a custom Raspberry Pi DAC HAT (Hardware Attached on Top).
We’ll explore what a HAT is, KiCAD project templates, basic circuit design for PCM5122 DAC and my custom Pi HAT PCB design.
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!

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.

Adafruit Top Secret for July 9, 2025
No-Code IKEA Vindriktning Air Quality Sensor Hack with Adafruit IO
Minecraft Skeleton#3dprinting #timelapse #adafruit
We love a good LED sphere. From large to small we post em all.
This desk sized version comes from AGBarber on Instructables and features a custom pcb, LED rings, a built in IR sensor for remote control and some 3D Printing. It’s a great effect and reminds me a little bit of a disco-deathstar.
The body of the sphere is entirely 3D printed, using transparent filament for the light emitting portions. I’ve also included a stand and hanging hook for display.
All the sphere’s lighting effects were created using my Pixel Spork Arduino Library. Checkout the video above to see the sphere in action!
For reference, you can find all the project’s files, code, etc at its Github Repo.
Please note that while most of the build is straight forward, it does require some tricky soldering and gluing in tight spaces. Before starting the project, you should read through the whole Instructable so you can plan your approach.
Build your own IoT NeoPixel lamp inspired by Disney’s EPCOT Spaceship Earth! Use a QT Py ESP32 PICO, NeoPixel BFF Driver, and WLED (web-based LED control software) to make amazing lighting effects!
Shared by NUKDDD on Maker World:
A lamp/night light in the form of a cute mushroom that uses the Lamp Kit 001 from Bambu lab or these LED pucks from Amazon.
Compatible with my other Lamp Kit shroom model.
Easy to print, no supports, comes in 2 pieces, easy to assemble, all parts fit snuggly and the lamp kit sits perfectly at the bottom of the stump.
Download the files and learn more

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!

Build your own Magic chess. Play against a computer on a physical board. From the Infineon Team on Hackster.io:
Tired of moving all the pieces yourself or just looking for a way to take your chess game to the next level? What if I told you your chessboard could move its own pieces, making every match feel like magic?
With this automated chessboard, powered by magnets, electromagnets, and a computer brain, the game comes alive — literally! Forget boring, static boards. This project takes the classic chess experience and gives it a modern twist. Each piece moves on its own, letting you focus on your next move without ever lifting a finger.
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!
Comic books are not superhero books. Comic books are a medium; superheroes are a genre. There are a great many romance, western, drama, comedic, and historic comic books. And, of course, science fiction comics are legion. Here are some recent great ones, from Polygon:
Much like the beloved movie The Incredible Journey, We3 is a story about three roving animals: in this case, a rabbit, a dog, and a cat named (respectively) Bandit, Tinker, and Pirate, all of whom just want to go home. Unfortunately, the three lovable pets are also escapees from a military facility that has bioengineered them into cyborg killing machines.
Armed with a heart-tugging sense of empathy often evoked by the sweet robotic chatter between the animals themselves, Morrison’s impressive gift for uncomfortable futurism, and Quitely’s always-inspiring attention to detail across the board, WE3 forces readers to question their part in the day-to-day weaponization that the future may hold.
R. Scott Coppersmith is developing an alternate to disposable weather balloons using drones. Uses an Adafruit BME688 – Temperature, Humidity, Pressure and Gas Sensor – STEMMA QT, details on Hackster.io:
Discarded weather balloons and radiosonde equipment can be hazardous to wildlife and the environment. We will use a quadcopter/drone as a reusable vehicle for the radiosonde equipment while taking meteorological data.
We will build a platform to carry an iMet-4 radiosonde on the Hovergames quadcopter, and interface the telemetry to extract the required data.
Our solution will use the drone to replace the rubber weather balloon thus making the system reusable and non-polluting.
More environmental monitoring fun on the Adafruit Learning System:
If you’ve wanted to display sensor readings on your device running WipperSnapper, you’re in luck! This guide will walk you through the process of building a device that reads environmental measurements and displays them on an OLED.
The process for setting up and using a display on a development board running WipperSnapper is simple, there is no coding or soldering – you just click!
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.