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CircuitPython 6.0.0 Beta 2 released!
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Please be positive and constructive with your questions and comments.

CircuitPython 6.0.0 Beta 2 released!

by tannewt on Mon Oct 05, 2020 5:19 pm

From the GitHub release page:
This is the third beta release of CircuitPython 6.0.0. It is relatively stable overall. See port status below for more stability detail. This is a quick bug fix release of Beta 1 so see it's release notes as well. Please use 5.3.x if you need a stable version of CircuitPython.

Download from
Downloads are available from The site makes it easy to select the correct file and language for your board. The downloads page is here. Downloads are no longer available from the GitHub release pages because of the large number of files for each release.

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

Try 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).

Port status
CircuitPython has a number of "ports" that are the core implementation for a variety of microcontroller families. Stability varies on a per-port basis. As of this release, atmel-samd, nrf, and stm for the F4 family are stable. cxd56, esp32s2, and stm for other chip families are being actively improved but may be missing functionality and have bugs. litex and mimxrt10xx are in an alpha state and will have bugs and missing functionality.

New features and improvements since 6.0.0 Beta 1
Fixes and enhancements
  • Fix RGBMatrix crash. #3507 Thanks to @jepler and @ladyada
Board- and port-specific changes
  • stage and pew libraries were updated. Thanks to @deshipu
  • Numerous translation additions and improvements. Thanks:
    • @wtuemura (Brazilian Portugese)
    • @bergdahl (Swedish)
    • @nijel (Korean)
Full commit log is here.

Breaking changes since 5.x
  • i2cslave is now i2cperipheral and the class in it is changed as well.
  • The stop kwarg has been removed from I2C.writeto(). If no stop is desired, then use writeto_then_readfrom.
  • The default speed of busio.I2C and board.I2C is now 100khz, not 400khz as before. Use busio.I2C to set the speed explicitly. #3471 Thanks @caternuson, @ladyada, @hierophect and @tannewt
New boards since 6.0.0 Beta 1
  • None
Known issues
Thank you to all who used, tested, and contributed since 6.0.0 Beta 1, including @bergdahl, @deshipu, @nijel, @jepler, @ladyada, @wtuemura, and many more on Discord. Join us on the Discord chat to collaborate.

Documentation is available in

This release is based on MicroPython 1.9.4 @25ae98f. Support upstream MicroPython by purchasing a PyBoard (from Adafruit here) or sponsoring MicroPython on GitHub.

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!

Check out this guide for info on common problems with CircuitPython. If you are still having issues, then post to the Adafruit Support Forums and join Discord.

Builds are no longer stored as assets on this release page, because there are too many of them. Please see the Download from section above.

Posts: 1837
Joined: Thu Oct 06, 2016 8:48 pm

Re: CircuitPython 6.0.0 Beta 2 released!

by faizannehal21 on Mon Oct 12, 2020 1:41 pm


Posts: 1
Joined: Mon Oct 12, 2020 1:39 pm

Please be positive and constructive with your questions and comments.