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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
Yes, I'd seen those boards - they look lovely! Sadly a bit on the pricey side when I looked (and nRF51-only at the moment).
I was considering a slightly larger DIL footprint that'd allow me to stick the module in the middle without having to do anything too costly (or fragile :).
3.7v is actually a really tricky one...
I could add a voltage regulator, but they draw some power just by being there - and also make it difficult to run it off a flat 3v. Another option might be to just stick a diode on the board to drop the voltage enough.
But even if I do that, the IO isn't 5v tolerant at all - which could really cause some problems.