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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.
@DrAzzy
You can also just switch power to a standard (cheap) supply/inverter for the el wire with a mosfet. Note that you can't pwm it, the inverter will not like that. I do that for backlighting for the display on my desk lamp (with el panel).
You will need a separate supply for all but the tiniest el wire projects