• Something like that should work, but you do have a missing end quote in that code and the wrong arrow...

    I just tried:

    echo "LED1.reset()" > /dev/ttyACM0 
    

    and that works great on Linux (and should do on mac if you change the /dev/tty... path.

    This might help you? https://www.espruino.com/Interfacing

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