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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
That's odd - did you compile Espruino yourself, or did you use the binary from the Espruino site?
I assume that the error message comes from WiringPi, as Espruino itself doesn't check the hardware it is on. Have you tried just running without
sudo?