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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 not huge, but it's better than nothing. The backlight is the biggest power draw in the system so I think it raises the internal temperature by a few degrees
And you don't really want it powered any longer than required anyway because if it's powered while wet you get more corrosion on the PCB.