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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
Great! There's actually twice that amount of memory available on there too, but at the moment I'm having issues keeping the code size down - so any more memory and you can't save :(
On the video, I just soldered headers on. They're cheap to buy, and it makes hacking stuff up easier as you can just plug and unplug wires. Also, at the bottom I'd soldered on a Bluetooth module (HC-05) so it could be controlled (or could send data wirelessly).