Buck-Boost FeatherWing for 2-15V Battery Power @hackadayio
David Wilson has designed am add-on board to the Feather format sized board (“FeatherWing) to allow an Adafruit Feather project to be powered from a variety of standard batteries.
Adafruit’s Feather development boards and Wings are an exciting alternative to the Arduino ecosystem. The Feather can be powered from either a USB cable or from rechargeable Lithium Ion Polymer (LiPo) batteries. Want to power one from regular alkaline batteries like AA or 9V? This new board will make it easy. It is a standard FeatherWing form factor, with a barrel connector power input that will accept any voltage from 2V to 15V. A TPS63070 buck-boost switching regulator converts this to 3.3V to power the Feather stack.
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