You are forced to keep your arduino connected to your computer.
Basically, this system works as a Node server on your computer, that will compile and send instructions to the Arduino, that will eval them. No code persistance on Arduino-side, besides the instruction interpreter (firmata was its name ?).
If you're just spinning up a small prototype, it can be fun, but it have no interest if you're trying to use your Arduino as a stand-alone system, like in most, if not all, situations.
I see, thanks very much for the response.
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