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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
Hi,
Yes, there are some limitations documented at: http://www.espruino.com/EspruinoBoard
But basically, you have to use different pin numbers. For instance, A0 and A1 are ok, but A0 and C0 are not.