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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
It's a really annoying situation. Electric Imp devices used to have a light sensor, and would listen to a certain pattern of flashes on the screen of whatever device was trying to communicate with them.
That could work out pretty well for small amounts of data, and could then be used straight from any device, without setup?