The Circuit Python board will draw its power from the Android device, so keep that in mind before you program some crazy light show.

Circuit Python is based on the Open Source MicroPython, a Python 3 interpreter that implements a subset of the Python language on microcontrollers and other constrained environments.

This has been tested to work with the latest stable release of CircuitPython (v4.1.0) on Circuit Playground Express.

While Micro Python supports a broad range of the language features of both Python 2 and 3, some features are still missing. For instance, Unicode support for strings hasn’t been implemented yet.