CircuitPython 2.0.0 Release Candidate 2

From the GitHub release page:

2.0.0 is getting close to ready! We had a number of people who tested and found issues with RC1: @ladyada, @ntoll, @deshipu, @willingc, @jerryneedell, @KurticusMaximus, @kattni. Please keep up the awesome testing! Join us on the Discord chat to collaborate.

DO NOT use this release if all you want to do is try CircuitPython. 1.0.0 is much better for playing around.

Here are the changes since Release Candidate 1:

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 2.0.0 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 1.9.2. Support upstream MicroPython by purchasing a PyBoard (from Adafruit here).

Have a Feather M0 Express, Metro M0 Express, Gemma M0, Trinket M0 or Circuit Playground Express? Download a .uf2 and follow these instructions. To install our libraries simply download the bundle for your release 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.

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  1. I still cannot get my Feather M0 Express to do anything on Windows 7 or 8. It works fine on my Mac. It shows up in Device Manager, but I can’t even connect to it via PuTTY. I am using the alleged latest 1.5 version of windows drivers, and Windows say they install OK. But nothing happens. The drive never shows up to load .uf2 files. It looks like everyone there only uses Macs and could not care in the least, much less test, your products under Windows.

  2. We definitely test it on Windows but the drivers are tricky. Please post on the support forum (https://forums.adafruit.com/viewforum.php?f=60) and we’ll get you figured out.

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