6 Mar
2007
6 Mar
'07
11:32 p.m.
On Mar 6, 2007, at 7:49 PM, Tom Peters wrote:
My great treasure is a box of Burroughs 7971 nixies. I
have five,
or maybe six of them. As you may know, these are "British Flag"
displays that can do any number, letter, and some punctuation.
They're 4.55 inches high, excluding the pins, and the characters
are 2.5 inches high.
Those are gorgeous tubes.
The other thing I want is a WWV decoder so it sets
itself. Yes, I
know I could periodically set it over a USB port, but I want it to
be self sufficient if no PC is handy. The only suggestions I've
gotten so far are to cut up a cheapo atomic clock from a big-box
store and salvage the 1 PPS output from it. That might help me keep
it accurate, but won't help me set it automagically.
You could obtain (or construct) a small, dumb WWVB receiver (like
one of the ones in the cheapo clocks) and pipe it into this
gentleman's design:
http://www.geocities.com/hagtronics/wwvb.html
He describes a (trivial) PIC-based design, and provides schematics
and source code.
-Dave
--
Dave McGuire
Port Charlotte, FL