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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
You have one more option:
Take a pin that doesn't say 3.3v, and then use
pinMode(pin, 'opendrain')and use something like a 4.7k resistor to pull the pin up to 5v. That way you can get a 5v output voltage for the FET.Hope that helps!