Battery Charger/Manager

[peekay123]

@Jack, @frlobo, @mohit had outlined the specs in another topic:

Spark Photon / Core - Power Shield

Hi Guys, I’m just in the process of cleaning up the repo and publishing the design files shortly. There is so much new stuff happening at Spark! Here is a quick summary of the power shield: The PCB is of the same footprint as the Core/Photon and is stackable The heart of the shield is based around TI’s BQ24030 battery management controller The shield accepts two types of sources to charge the battery and power the Photon simultaneously: a. USB port - charge rate limited to 500mA b. A DC sou…