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CircuitPython 2.0.0 Beta 1 – Storage & SD Cards Oh My!

From the GitHub release page:

Woohoo! After our first stable release with 1.0.0 we’re back to breaking things while we improve them. DO NOT use this release if all you want to do is try CircuitPython. 1.0.0 is much better for playing around.

However, 2.0.0 is shaping up to have some awesome new features. Here is a short list:

Moving from 1.0.0 to 2.0.0 is not a perfect process. There are a few things that break when doing so.

  • mpy files compatible with 1.0.0 are NOT compatible with 2.0.0 because MicroPython changed the format. A beta bundle is available here. (Its built by changing the branch of circuitpython in the bundle repo before building it.)
  • uos is replaced by os, storage and multiterminal
  • urandom is replaced by random

This release is based on MicroPython 1.9.1. Support upstream MicroPython by purchasing a PyBoard (from Adafruit here).

Exhaustive change list since 1.0.0.

Have a Feather M0 Express, Metro M0 Express, Gemma M0 or Circuit Playground Express? Download a .uf2 and follow these instructions. To install our libraries simply download this beta bundle and copy the lib folder onto your CIRCUITPY drive.

To install on legacy boards, download a .bin file and follow the guide here for M0 and here for ESP8266.


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, or even use Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for MakeCode, CircuitPython, 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.

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