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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
You could probably work around it by scanning R and then G, and then B. But yeah, Neopixel clones are pretty cheap. There are some crazy tiny chips coming out as well (there's one even smaller than the 3.5 x 3.5mm package), so you should see some properly small neopixel matrices soon.