AVR-Chat

I've done something similar with an infrared remote control -- really simple 
2-signal protocol -- one to change mode and the other to change the value in 
that mode.

And if I'm not mistaken, I've been on this list for a year or more and this is 
my first post here.

Cheers,
-Neil.



On Wednesday 14 June 2006 18:33, John Samperi wrote:
> G'day all
>
> I'm looking into a project for an outdoor time/temp/date giant
> display (20" high possibly).
>
> As the unit will be mounted on the side a multistory building as
> I understand, I don't think the client will want to get a cherry
> picker or climb a window washing lift to reset the time twice a
> year to cater for the dreaded daylight time changes.
>
> So I'm looking at 3 options:
>
> 1) Have the display connected to a computer which will be always
> on with a small application that will send time and date out every
> minute to the display via an RS485 link. This would take care of the
> daylight saving automatically.
>
> 2) Have a plug in keypad somewhere at ground level.
>
> 3) Best option-have an off air time and date signal like the one
> on my PVR. I know that in some parts of the world you can get this
> kind of signal but from my research it seems to be giving way to
> GPS time signal.
>
> So my question is has anyone used some kind of receiver that is
> dedicated to simply receive this kind of signal? Any experience?
>
> Also as far as temperature reading is concerned, a simple temperature
> chip on the PCB may not work because the air temp inside the case would
> be much higher than the actual air temp. Again any hints on this? I'm
> thinking along the lines of a small box with lots of holes and a temp
> chip inside that may work well. Again I don't have any experience with
> outdoor temp measurements so any guidance would be appreciated.
>
> Of course I may not get the job but the research is interesting. :-)
>
>
> Regards
>
> John Samperi
>
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