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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.
@bluebie
I don't think this is a good solution for Espruino, but this I2S DMA WS2812 driver is really neat: https://github.com/cnlohr/esp8266ws2812i2s