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RE: [Development] Lights, 12 or 14 bit micro
- To: <ukha_d@xxxxxxx>
- Subject: RE: [Development] Lights, 12 or 14 bit micro
- From: "James Hoye" <james.hoye@xxxxxxx>
- Date: Sat, 9 Jun 2001 20:32:08 +0100
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> The last option does have other plus points, I will have a extra
serial
> port which will allow control from othrt than tcp/ip if needed, much
more
> RAM, only 25 bytes on the 508 41 bytes on the 509, compaird with 192
> bytes on most of the 14 bit parts, also there would be no address
problem
> as one micro would handle all 8 outputs.
>
> There is a down side, the parts cost is greater, if the pic gets zaped
> you will loose all 8 channels.
>
> Any comments
How about 2 16Cxx PICS (the 16F84 ones are around ?4 from M****n if they
have any in stock - so with volume we should get them considerably cheaper
than that) one designated as MASTER, the other as SLAVE. When the device
powers up, if after a preset time the SLAVE cannot communicate with the
MASTER (ie. it's fried) then it takes over....(and sends a concole alert)?
Or am I talking rubbish here? Just thinking about reliability and WAF.
James
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Automated Home UK
http://www.automatedhome.co.uk
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