Feather is a flexible and powerful family of microcontroller main-boards (Feathers) and daughter-boards (Wings) designed with portability in mind. All Feathers have integrated battery connectors (and most have built in lipo chargers)

The Feather form factor is not locked to a specific chipset or programming language. Feathers are available with a variety of chipsets and on-board features. Most Feathers and FeatherWings have example code and libraries written in Arduino C/C++ and CircuitPython.