[time-nuts] Oncore question
Brian Kirby
kirbybq at bellsouth.net
Sat Nov 22 10:24:48 UTC 2008
check http://www.synergy-gps.com/content/view/42/89/ the article on
battery backup has some info on this....
Brian KD4FM
Morris Odell wrote:
> Hi Fellow Nuts,
>
> I've been following the thread on parsing the Motorola receiver code with
> great interest. I have written AVR code to do this but have not gone to
> great trouble making it bullet proof as it was a non critical application
> in
> a Nixie clock. I programmed the receiver to send only one message, and then
> looked for the @@Ba string before I started counting bytes. I used the
> number of SVs byte to decide whether the data was good. Worked fine for me!
>
> I'm about to start another project with an Oncore so maybe I'll experiment
> with a more complex program this time.
>
> My question relates to the older Oncore VP receivers. I have one which had
> a
> dead memory battery. The receiver has an on-board battery charger for a
> rechargable Li cell but they are very hard to find down here. In the past
> I've used a conventional Li cell with a schottky diode to prevent the
> charger from forcing current down it's throat. I was wondering if there's
> any reason not to use a super cap. I only need it to support the memory for
> very short periods during power burps. Will the on-board charger be OK for
> a 1F
> super cap?
>
> Any help or opinons much appreciated
>
> Thanks,
>
> Morris
>
>
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