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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.
@user121340
Great thanks @Gordon.
I'd be really interested to hear about your solar/battery setup once you get some ideas.
I've got micro inverters so the solar just dumps into my household supply. I don't have much excess in terms of wattage but it all adds up.
I'm currently plotting a passive heat exchange in the loft - pipework in the loft to be heated by the sun and circulated/pumped (solar) into a small tank (I don't have an immersion) so water going into the combi boiler will be hotter to reduce the energy required to get it up to temperature.