On Sun, Mar 24, 2013 at 7:34 PM, EB4APL <[email protected]> wrote: > I wanted to build a GPSDO using the Brooks Shera design since I read the QST > article. I asked him in Jan 2009 about his source code, because I wanted to > change the PIC to a more modern one and add some functionality....
This is a perfect example of why people need to publish the source. Make it GPL or whatever. But the version that was posted to this thread is close enough to the final version and it is easy to modify any why you like. I was going to build one of these too. Then I found out about a PIC-TIC which is quite a bit better at measuring the phase difference and today we have better parts and cheap FPGAs. The value of the Shera design is that it is simple enough to study and understand and then go build something that builds on Brooks' idea. Now that you can read the code and see the schematic people can study this for years. > https://sites.google.com/site/bshera02/software > and > https://sites.google.com/site/bshera02/software2 This is another example of a dead-end project. No source code. You'd have to start over from scratch to make even the smallest change (such as getting it to run on a new version of the OS or an iPad or whatever.) -- Chris Albertson Redondo Beach, California _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
