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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@Gordon
Nice - I hadn't seen those. I guess that could be an interesting option - I haven't heard of any dev boards with a configurable USB voltage on them.
It'd need some thought though - I was planning on a LiPo charger but you'd have to maybe add another voltage regulator just for LiPo charging so you didn't blow up the charger when you turned up the voltage :)