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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
I think it'd probably be fine even as a byte array - it's just right now as a sparse array it's 1 var per entry, so you're looking at 16x more memory than if you used a Uin8Array and 128x than if you packed it as bits :)