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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
Ahh - try
Serial.println(new Uint8Array(...).toString()). I'd have thought that would output something like0,0,1,0,0,1,0,0\r\nthat should be pretty easy to receive.