[simpits-tech] More on USB

[geneb]

On Mon, 15 Sep 2014, Matt Bailey wrote:

> Just ran across this article while researching USB interference via
> inductive loads (relays, motors, etc), very interesting:
>
> http://www.controlanything.com/i.htm
>
> Basically, they are saying to avoid USB for ANYTHING that involves any
> sort of inductive load. I knew USB was finicky, but I had no idea there
> is exactly ZERO ERROR CHECKING/HANDLING for the USB spec! No wonder we
> have so much grief with USB-based devices!
>
> Amusingly, they recommend going to good ol' RS-232 as one option for
> controlling inductive loads.

Inductive loads shouldn't matter - if you're not isolated from the USB 
interface, you've got more problems than just that.

Note that I've never had any issues with the USB stuff I work with.

g.

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