ICYMI Python on Microcontrollers Newsletter: CircuitPython 6 release candidate 1, 60 Blinka SBCs and more! #Python #Adafruit #CircuitPython #ICYMI @micropython @ThePSF

If you missed it, subscribe now! – You’ll get one terrific newsletter each Tuesday (before this post). Over 8,229 subscribers worldwide!

The next newsletter goes out in a week and being subscribed the best way to keep up with all things Python for hardware. No spam, no selling lists, leave any time

Hi everyone! It’s the latest Python for Microcontrollers newsletter, brought you by the community! We’re on Discord, Twitter, and for past newsletters – view them all here. If you’re reading this on the web, subscribe here. Now the news!

Blinka now supports 60 Single Board Computers!

Blinka, the CircuitPython snake mascot, holding hands with Tux, the Linux penguin mascot

As of this week, Blinka now supports 60 single board computers (SBC). Blinka allows SBCs to run most of the 280+ CircuitPython libraries.

CircuitPython 6.0.0-rc.1 released

60 Single Board Computers now run CircuitPython

Release candidate 1 is the second release candidate of CircuitPython 6.0.0. The CircuitPython team doesn’t know of any stability issues overall. If you find any issues with it, please file an issue on GitHub. If no issues are found within a week or so, this version will be released as stable – Adafruit Blog.

CircuitPython in Space Update

CircuitPython in Space

CircuitPython in Space

At least 4 spacecraft running CircuitPython 5.3.1 are launching in December by NASA! More info at pycubed.org

The LCA2021 #swagbadge Project

LCA2021 #swagbadge Project

A limited number of LCA2021 Swag Badge electronic badges will be produced for the online Linux Conference Australia, which will be distributed to conference attendees, The conference is January 23-25 2021 Online, Worldwide. The LCA2021 Swag Badge is being specially developed and tailored for the conference. The board will be ready for development with the latest MicroPython installed and features an ESP32 microcontroller and dual OLED displays – Open Hardware Conference.

CircuitPython Deep Dive Stream with Scott Shawcroft

Deep Dive with Scott

This week, Scott streams his work on an ESP32-S2 MagTag eInk Portal.

You can see the latest video and past videos on the Adafruit YouTube channel under the Deep Dive playlist – YouTube.

Adafruit Update


Adafruit is shipping orders!

Adafruit is stocked and shipping orders!

Now is the best time to get orders in for your favorite products, including holiday projects and gifts.

Adafruit parts have free, easy to follow tutorials in the Adafruit Learning System.

Shop Adafruit now

News from around the web!


Debra Ansell, GeekMomProjects, is quickly becoming the “Go-To” authority on great-looking LED lighting! Her latest work uses NeoPixel strip lit acrylic matrices. Animations are from Adafruit’s CircuitPython adafruit_led_animation library, running on an Adafruit ItsyBitsy M4 Express boardhackster.io.

Spooky Show

Mark puts together AdaBox 016’s Rocky Horror Pixel Show and the HalloWing Eye into a very spooky display – Twitter.

ThinkInk FeatherWing

Gradient mapping and dithering to make images look beautiful on tri-color E-Ink displays. From John Park’s Workshop, a ThinkInk FeatherWing running on Feather M4 Express in CircuitPython – Twitter.

MIDI Keyboard

Work in progress on a MIDI keyboard with Feather and CircuitPython – Twitter.

AdaBox 016 Christmas Countdown

Work in progress to change the Halloween_Countdown_Matrix code from AdaBox 016 into a Christmas countdown clock – GitHub.

BME280 Sensor Data

An example of CircuitPython – using putty as a serial terminal, reading a BME280 sensor with color management and terminal refresh – Twitter (French).


A gaming chair augmented with CircuitPython-based technology – Twitter.

MicroPython on the Raspberry Pi

MicroPython – How can I develop MicroPython on the Raspberry Pi? – Looks Like Matrix (German).

Getting Started With MicroPython – Real Python.

Tried CircuitPython

Tried yesterday for the first time the python REPL on a µcontroller board (CircuitPython from Adafruit but could have been MicroPython or Seeedstudio ArduPy) It’s quite cool to interact live with APIs… If you know someone interested in learning how to code, physical computing is more engaging than computing matrices products! Robotic, home automation, dynamic lightning with addressable RGB LED strips are all fun projects! – Mastodon and Twitter.

MicroPython micro:bit MOD C Library

The MicroPython micro:bit MOD C Library – an advanced tutorial for the official BBC micro:bit V2 where we mod the C modmicrobit.c library and add your own custom C function to create your own custom firmware to interact with your development files in Python – GitHub.

Top 10 Trending Python Projects On GitHub

Top 10 Trending Python Projects On GitHub – Towards Data Science.

Image Processing in Python

Image Processing in Python: Algorithms, Tools, and Methods You Should Know – neptune.ai.

Drawing from data: resources for data exploration with Python

A new book – Drawing from data: resources for data exploration with Python – Drawing From Data.

Code isolation in Python

On code isolation in Python – rushter.com.

Python Exception Handling With Else

Python Exception Handling With Else – NotesforMSc.

Python 3.10.0a2 is now available for testing – Python Dev Blog.

PyDev of the Week: Mary Chester-Kadwell on Mouse vs Python

CircuitPython Weekly Meeting for November 9th, 2020 on YouTube and notes

#ICYDNCI What was the most popular, most clicked link, in last week’s newsletter? The Raspberry Pi 400 is here!.

Coming soon

New Solder Party Board

Solder Party is coming out with a new Feather form factor board – dual MCU. The main MCU is a NXP i.MX RT1011, running at 500MHz with 128KB RAM, 8MB QSPI Flash. The co-processor is an ESP32, can be easily used from the main MCU for WiFi and BLE over SPI – Twitter.

Adafruit MagTag

Adafruit MagTag

MagTag is the latest bit of low-power, magnetic magic from Adafruit! With an 2.9” EPD (ePaper) panel, with a whopping 296 x 128 pixels, capable of 4-bit grayscale and an ESP32-S2 processor – hackster.io and Adafruit.

New Boards Supported by CircuitPython

New Boards

The number of supported microcontrollers and Single Board Computers (SBC) grows every week. This section outlines which boards have been included in CircuitPython or added to CircuitPython.org.

This week we had 11 new boards added!

Looking for adding a new board to CircuitPython? It’s highly encouraged! Adafruit has four guides to help you do so:

New Learn Guides!

New Learn Guides

Adafruit Voice Bonnet from Kattni

Adafruit Metro ESP32-S2 from Kattni

CircuitPython Libraries!

CircuitPython Libraries

CircuitPython support for hardware continues to grow. We are adding support for new sensors and breakouts all the time, as well as improving on the drivers we already have. As we add more libraries and update current ones, you can keep up with all the changes right here!

For the latest libraries, download the Adafruit CircuitPython Library Bundle. For the latest community contributed libraries, download the CircuitPython Community Bundle.

If you’d like to contribute, CircuitPython libraries are a great place to start. Have an idea for a new driver? File an issue on CircuitPython! Have you written a library you’d like to make available? Submit it to the CircuitPython Community Bundle. Interested in helping with current libraries? Check out the CircuitPython.org Contributing page. We’ve included open pull requests and issues from the libraries, and details about repo-level issues that need to be addressed. We have a guide on contributing to CircuitPython with Git and Github if you need help getting started. You can also find us in the #circuitpython channel on the Adafruit Discord.

You can check out this list of all the Adafruit CircuitPython libraries and drivers available.

The current number of CircuitPython libraries is 280!

Updated Libraries!

Here’s this week’s updated CircuitPython libraries:

What’s the CircuitPython team up to this week?

What is the team up to this week? Let’s see:


As expected, I was able to test the hardware for the TMP117 temperature sensor last week, and it went very well! I finished the CircuitPython library over the last week, and in the process I found a new favorite temperature sensor! The data layout is quite easy to use, and the feature set works quite well for simple temperature related tasks. I’ll be using this little gem in a few upcoming personal projects.

Additionally after bodging one little bug, I was able to verify the hardware for the new revision of the CAN FeatherWing, which uses the MCP25625 controller with the integrated transceiver. Since this chip allows for a further shrinking of the required space, I think it’s quite likely you’ll see this chip in other, smaller forms in the future.


I fixed a final issue in the CircuitPython 6.0.0 release candidate build, and also merged in a few last minute changes from Lady Ada and Jeff Epler. On Monday night, I released the second release candidate, 6.0.0-rc.1. Please try it out if you get a chance. If there are no further urgent fixes, we’ll re-release rc.1 as the final 6.0.0 build. Yay!

I have finished up the BLE work I’ve been doing for the past several months, and I’m now going to join the folks working on ESP32-S2 CircuitPython port.


A CircuitPython library isn’t complete without a guide, so the past few days I’ve been working on a guide that introduces canio and shows some simple programs to use it. What will you do once you can network your CircuitPython boards together with canio?


This week I published the Adafruit Metro ESP32-S2 guide. It’s full of all the details about the board including an Overview, Pinouts, and resource Downloads page. The guide also covers how to get started using the board with CircuitPython and how to get CircuitPython installed. If you managed to get your hands on one of the beta boards, check out this guide to get it up and running!

I also updated the pin definition for the Metro ESP32-S2 in CircuitPython as the initial pin def did not match. We decided to go with IOx pin names to avoid confusion due to the pin layout on the Metro ESP32-S2 differing from typical Metros. There is a page in the guide that clarifies the reasoning, and has a detailed diagram showing what pin names are available. If you want to use CircuitPython with this Metro and have the accurate pin definition, make sure you’re running the absolute latest from the S3 link on CircuitPython.org.


This past week I worked on wrapping up my NeoPixel work, fixing some issues that only occur when multiple NeoPixel lines are used simultaneously, as well as making sure those fixes were added to the CircuitPython implementation as well. I also reviewed some incoming modules submitted by the community for the ESP32-S2, including CountIO and RotaryIO.

Beyond the NeoPixels, I’ve been brushing up on the UDP-IP stack so I can assist more with the networking end of the ESP32-S2 work – it’s been a long time since I did network programming so I’ve been catching up on material I’ve forgotten. I’ll hopefully have some working tests this week, so I can better assist with incoming issues related to network bugs.


This past week I added the Voice Bonnet to the Google Assistant guide that I wrote. This was originally written for the BrainCraft, but fortunately it worked without modification for the Voice Bonnet just fine. You can check out the guide here.

I also worked with Scott to try and narrow down some of the issues with the latest version of the CircuitPython Requests library. I was able to fix a few of the issues and Scott is handling some of the intermittent connection issues.

Finally, I worked on a guide for the 1.5-inch 128×128 Grayscale OLED. The guide is coming along nicely and should be out very soon. Be sure to watch out for it.


This week I’ve been debugging the latest version of requests. I’ve found issues with both ESP32SPI co-processor sockets and the socket implementation in the ESP32-S2. It seems to be more resilient now and those two implementations better match how sockets work in CPython. As a result, it’ll be easier to develop network libraries in CPython and expect them to work with both an ESP32 coprocessor (aka ESP32SPI) or the native networking on the ESP32-S2.

Upcoming events!

PyCon Sweden

PyCon Sweden 2020 will be held 12-13 of November 2020 online – PyCon Sweden.

PyCon Indonesia 2020

PyCon Indonesia is a conference where Python users, or people interested in Python, gather to learn from each other and meet other members of the community. This year, they have chosen “Connect – Collab – Contribute” as the theme. Online 14-15 November 2020. Includes a keynote talk by Nina Zakharenko: “The Python Community is Stronger Together” – pycon.id.

Online Python Web Global Summit '20

The Online Python Web Global Summit ‘20 – 19 November 2020. Start: 10 am UTC duration: 24 hours online – Geekle.

Send Your Events In

As for other events, with the COVID pandemic, most in-person events are postponed or cancelled. If you know of virtual events or events that may occur in the future, please let us know on Discord or on Twitter with hashtag #CircuitPython.

Latest releases

CircuitPython’s stable release is 5.3.1 and its unstable release is 6.0.0-rc.1. New to CircuitPython? Start with our Welcome to CircuitPython Guide.

20201107 is the latest CircuitPython library bundle.

v1.13 is the latest MicroPython release. Documentation for it is here.

3.9.0 is the latest Python release. The latest pre-release version is 3.10.0a2.

1886 Stars Like CircuitPython? Star it on GitHub!

Call for help – Translating CircuitPython is now easier than ever!

CircuitPython translation statistics on weblate

One important feature of CircuitPython is translated control and error messages.

With the help of fellow open source project Weblate, we’re making it even easier to add or improve translations.

Sign in with an existing account such as Github, Google or Facebook and start contributing through a simple web interface. No forks or pull requests needed!

As always, if you run into trouble join us on Discord, we’re here to help.

jobs.adafruit.com – Find a dream job, find great candidates!


jobs.adafruit.com has returned and folks are posting their skills (including CircuitPython) and companies are looking for talented makers to join their companies – from Digi-Key, to Hackaday, Microcenter, Raspberry Pi and more.

Job of the Week

PCB Electronics Assembler – eIQ, Santa Clara, CA – Adafruit Jobs Board.

25,673 thanks!

25,673 THANKS

Adafruit Discord

The Adafruit Discord community, where we do all our CircuitPython development in the open, reached over 25,673 humans, thank you! Adafruit believes Discord offers a unique way for CircuitPython folks to connect. Join today at https://adafru.it/discord.

ICYMI – In case you missed it


The wonderful world of Python on hardware! This is our Python video-newsletter-podcast! The news comes from the Python community, Discord, Adafruit communities and more and is reviewed on ASK an ENGINEER Wednesdays. The complete Python on Hardware weekly videocast playlist is here.

This video podcast is on iTunes, YouTube, IGTV (Instagram TV), and XML.

Weekly community chat on Adafruit Discord server CircuitPython channel – Audio / Podcast edition – Audio from the Discord chat space for CircuitPython, meetings are usually Mondays at 2pm ET, this is the audio version on iTunes, Pocket Casts, Spotify, and XML feed.

And lastly, we are working up a one-spot destination for all things podcast-able here – podcasts.adafruit.com

Codecademy “Learn Hardware Programming with CircuitPython”

Codecademy CircuitPython

Codecademy, an online interactive learning platform used by more than 45 million people, has teamed up with the leading manufacturer in STEAM electronics, Adafruit Industries, to create a coding course, “Learn Hardware Programming with CircuitPython”. The course is now available in the Codecademy catalog.

Python is a highly versatile, easy to learn programming language that a wide range of people, from visual effects artists in Hollywood to mission control at NASA, use to quickly solve problems. But you don’t need to be a rocket scientist to accomplish amazing things with it. This new course introduces programmers to Python by way of a microcontroller — CircuitPython — which is a Python-based programming language optimized for use on hardware.

CircuitPython’s hardware-ready design makes it easier than ever to program a variety of single-board computers, and this course gets you from no experience to working prototype faster than ever before. Codecademy’s interactive learning environment, combined with Adafruit’s highly rated Circuit Playground Express, present aspiring hardware hackers with a never-before-seen opportunity to learn hardware programming seamlessly online.

Whether for those who are new to programming, or for those who want to expand their skill set to include physical computing, this course will have students getting familiar with Python and creating incredible projects along the way. By the end, students will have built their own bike lights, drum machine, and even a moisture detector that can tell when it’s time to water a plant.

Visit Codecademy to access the Learn Hardware Programming with CircuitPython course and Adafruit to purchase a Circuit Playground Express.

Codecademy has helped more than 45 million people around the world upgrade their careers with technology skills. The company’s online interactive learning platform is widely recognized for providing an accessible, flexible, and engaging experience for beginners and experienced programmers alike. Codecademy has raised a total of $43 million from investors including Union Square Ventures, Kleiner Perkins, Index Ventures, Thrive Capital, Naspers, Yuri Milner and Richard Branson, most recently raising its $30 million Series C in July 2016.


The CircuitPython Weekly Newsletter is a CircuitPython community-run newsletter emailed every Tuesday. The complete archives are here. It highlights the latest CircuitPython related news from around the web including Python and MicroPython developments. To contribute, edit next week’s draft on GitHub and submit a pull request with the changes. You may also tag your information on Twitter with #CircuitPython.

Join our Discord or post to the forum for any further questions.

Adafruit publishes a wide range of writing and video content, including interviews and reporting on the maker market and the wider technology world. Our standards page is intended as a guide to best practices that Adafruit uses, as well as an outline of the ethical standards Adafruit aspires to. While Adafruit is not an independent journalistic institution, Adafruit strives to be a fair, informative, and positive voice within the community – check it out here: adafruit.com/editorialstandards

Join Adafruit on Mastodon

Adafruit is on Mastodon, join in! adafruit.com/mastodon

Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.

Have an amazing project to share? The Electronics Show and Tell is every Wednesday at 7pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Join over 36,000+ makers on Adafruit’s Discord channels and be part of the community! http://adafru.it/discord

CircuitPython – The easiest way to program microcontrollers – CircuitPython.org

Maker Business — “Packaging” chips in the US

Wearables — Enclosures help fight body humidity in costumes

Electronics — Transformers: More than meets the eye!

Python for Microcontrollers — Python on Microcontrollers Newsletter: Silicon Labs introduces CircuitPython support, and more! #CircuitPython #Python #micropython @ThePSF @Raspberry_Pi

Adafruit IoT Monthly — Guardian Robot, Weather-wise Umbrella Stand, and more!

Microsoft MakeCode — MakeCode Thank You!

EYE on NPI — Maxim’s Himalaya uSLIC Step-Down Power Module #EyeOnNPI @maximintegrated @digikey

New Products – Adafruit Industries – Makers, hackers, artists, designers and engineers! — #NewProds 7/19/23 Feat. Adafruit Matrix Portal S3 CircuitPython Powered Internet Display!

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !

No Comments

No comments yet.

Sorry, the comment form is closed at this time.