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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.
@thomc
Thanks for the link, I had read that, and it made sense, but the LightwaveRF has a strange arrangement of using low output for signalling as well as high, and I think that is where I've not quite got it.
Think I will stick a logic analyser on it in the mean time, see exactly what it is doing.