From: Adam Kumiszcza
It will be connected via a short cable (1,5 m or less) to one computer. The
second will join much later, I will worry about splitting the signal then.
Other computers would be in different rooms, so I would need another time
source.
My question was rather if stacking another board with serial port on it
would be a good idea. I'm thinking of using PPS signal there directly via
GPIO. And maybe NMEA, too.
Cheers,
Adam
=================================
Adam,
You may be unable to stack another board on top, but that depends on the
boards, of course. I would suggest using the network connection between the
computers (with the Internet as a backup) for getting the coarse seconds.
You then need to know what voltage level is required on the second computer
for its serial connections - +/- 12 V or TTL levels. If it's a standard
serial port on the computer, use a RS232-TTL converter just to connect the
PPS line to the DCD pin (1 on a DB9 connector). No need to the TX/RX lines,
just ground and PPS.
I had hoped that someone else on the group who had real-world experience of
distributing PPS might chip in....
Cheers,
David
--
SatSignal Software - Quality software for you
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