[time-nuts] GPSDO Alternatives

Bob Camp lists at rtty.us
Fri Dec 7 01:01:49 UTC 2012


The solution to the problem is well known in several forms. Cost is below $5 for pretty much all of them. No need to re-invent the wheel. The gotcha is that you can't do it 100% with internal CPU peripherals. You will need *some* glue. 


On Dec 6, 2012, at 7:43 PM, Chris Albertson <albertson.chris at gmail.com> wrote:

> What if the OCXO had a sine wave output and then you used the PPS leading
> edge to gate the sine wave to a sample and hold.  then the sample is
> measured by the Arduino's ADC?  I think(?) you get a 10-bit ADC or is it
> 8-bits.  The problem is the required speed of the sample and hold, maybe
> not easy to build
> -- 
> Chris Albertson
> Redondo Beach, California
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