+.. image:: https://img.shields.io/badge/code%20style-black-000000.svg
+ :target: https://github.com/psf/black
+ :alt: Code Style: Black
+
+This repository contains a selection of packages mirroring the CircuitPython API
+on hosts running micropython. Working code exists to emulate the CircuitPython packages;
+
+* **board** - breakout-specific pin identities
+* **microcontroller** - chip-specific pin identities
+* **analogio** - analog input/output pins, using pin identities from board+microcontroller packages
+* **digitalio** - digital input/output pins, using pin identities from board+microcontroller packages
+* **bitbangio** - software-driven interfaces for I2C, SPI
+* **busio** - hardware-driven interfaces for I2C, SPI, UART
+* **time** * - substitute functions monkey-patched to time module
+