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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
Just to add that I (finally) added support for multiple displays, now I have one to test with.
All documented here: http://www.espruino.com/MAX7219
Under 'Multiple chained MAX7219 (bigger than 8x8)'