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  1. #1
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    Nov 2012
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    742

    Noname Chinese board: what does USB do?

    I got a stupid question that keeps bugging me. In this controller board, what does USB actually do? It seems to be a regular parallel port breakout board with 17 I/O pins. What do you use the USB connection for?


  2. #2
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    Feb 2008
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    583

    Re: Noname Chinese board: what does USB do?

    Quote Originally Posted by CitizenOfDreams View Post
    I got a stupid question that keeps bugging me. In this controller board, what does USB actually do? It seems to be a regular parallel port breakout board with 17 I/O pins. What do you use the USB connection for?
    It supplies 5V power, that's all.

  3. #3
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    Nov 2012
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    742

    Re: Noname Chinese board: what does USB do?

    Duh. I guess a USB connector is a few cents cheaper than an isolated DC/DC converter. And it probably lures in a few buyers who think they are getting a USB CNC controller.

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