[time-nuts] Thought experiment on a low cost timing board
Alberto di Bene
dibene at usa.net
Sat Feb 25 09:37:02 EST 2006
Arnold Tibus wrote:
> Unfortunately there is only the hex list of the pic code.
> As I would like to experiment as well with this modification
> and try to change some parameters to fit my LPRO
> and some different OCXOs I own,
> is there a way to get the commented source code of it?
>
I designed and implemented a couple of years ago a GPSDO along the
conceptual lines of that of Brooks Shera, but with a different
processor (an AVR ATmel AT90S8535) and using a 20 bit PWM instead
of the DAC (difficult to obtain). It kept the OCXO disciplined
in a few parts over 10^11, confirmed also by comparisons against
a Z3801A.
If you want the source code of my AVR program (assembly language)
just ask.
73 Alberto I2PHD
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