is a Browser-Based CircuitPython Editor and Serial Terminal

CircuitPython web editor and terminal

Would you like to be able to edit CircuitPython code, upload and download files to and from your CircuitPython board, and connect to its serial terminal, all from inside a browser? Check out! It runs in Chromium-based browsers like Chrome, Microsoft Edge, and Opera, so you don’t need to install anything. can connect to boards using the CircuitPython WiFi workflow, or over USB. If the board presents a CIRCUITPY drive, it will access files through that. But it allows you to also read and write files via the CircuitPython serial connection, if you are using a board that does not have native USB storage. And it connects to the CircuitPython board’s REPL through a built-in serial terminal. Additionally you can now upload and download image and sound files for your code, which was previously not an option except with Web Workflow.

MakerMelissa developed this editor some time ago for Adafruit, but it hasn’t been publicized widely. Recently she added support for boards without a CIRCUITPY drive.

Further enhancements are planned for the editor. If you find bugs or have suggestions, go to the GitHub repo, review the current issues list, and file a new issue if you’d like. More documentation will be availabl later too.

(Note: Opera on Linux cannot see the serial devices, but Opera on Windows seems fine.)

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:

Join Adafruit on Mastodon

Adafruit is on Mastodon, join in!

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, 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!

CircuitPython – The easiest way to program microcontrollers –

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 !

No Comments

No comments yet.

Sorry, the comment form is closed at this time.