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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
If you get
ERROR: Unable to mount SD card : NOT_READYthat'll some kind of wiring problem with the SD card. First I'd try just setting up the SD card and reading a file to make sure you have that part working ok.