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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
Glad it's going ok! With 2v05 and later you might have some success increasing range of the external LED by just specifying a single IO pin and connecting the other pin of the LED to GND.
The on-puck LED should do better than 10cm though - it is reasonably directional without the cover though, so it helps if it's pointing towards the thing you're interested in controlling.