Re: weird reboots of embedded pc

From: Pooh Bear (rabbitsfriendsandrelations_at_hotmail.com)
Date: 12/14/04 

Date: Tue, 14 Dec 2004 02:04:08 +0000

Quack wrote:

> Thankyou everyone for your suggestions.
> A lot of useful info in there :).
>
> It has been decided to use a standard PC case in the existing machines,
> hopefully this will sort it out.
> Also we will make a much better attempt at grounding things.
>
> For the future, the enclosures will be made with metalic frames (well
> grounded) and _REAL_ embedded boards will be used, no more cheap pc crap :).
>
> The motherboard changes already would have covered the extra cost for using
> good quality embedded boards. Oh well. Live and learn :).
>
> Regarding comments about humidity and anti-static carpet spray's, for
> obviouse reasons the environment can not be under our direct control all the
> time, so whatever we do has to be pretty tough. Other machines seem to
> handle it fine.

Using a metal PC case won't stop ppl discharging themselves into the controls
though !

You need to ensure that the user interface ( touchscreen and switch ) doesn't
allow a path for electrostatic discharges that simply fly through the interface
board and upset the PC's internals.

Graham

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