It's not likely you can directly multiply 1PPS up to 32 kHz, but it's easy to
divide 10 MHz down to 32 kHz.
See http://leapsecond.com/pic/src/pd30.asm for a $1 PIC example.
A stand-alone 10 MHz OCXO or the simplest possible GPSDO would work for your
digital clock project. Chris and Nick and many others have shared low-cost
Arduino-class examples to the list over the years. Another example is the
MCU-less James Miller design which uses a PLL at 10 kHz.
Contact me off-list some day when want a Trimble Thunderbolt; they are still
----- Original Message -----
From: "Lee - N2LEE via time-nuts" <firstname.lastname@example.org>
Sent: Tuesday, October 18, 2016 7:03 PM
Subject: [time-nuts] 1PPS to 32.768 khz
First let me say this is first time I have posted to the group so go easy on
Secondly I want everyone to know that you guys make me feel so NORMAL for
wanting to use and understand accurate timing devices.
I thought there was something seriously wrong with me now I know there are
affected with the same disease. hehe
Now my questions.
1. Does anyone know of a device that will take a 1PPS GPS timing signal and
generate a 32.768 kHz sine wave output ?
I have big digital clock that uses an 8 bit micro processor and an external
32.768 crystal. Obviously the external crystal is
awful for accuracy.
I have searched every where using as many search terms as I can think of and
can’t believe there is not a device that performs
I have found a couple of Epson RTC chips that might come close that 1pps but I
don’t think that corrects the 32khz just the clock time.
2. 10 Mhz Freq Standard
I am not in the same league as the majority of the list members and just
starting to dabble in GPSDO stuff.
I have tried to find a thunderbolt as a starting device but it appears those
are either dried up or people want too much money.
I wanted to get the opinion of anyone who has tried the Leo Bodnar GPSDO ?
For the money it appears to offer a beginner a lot of features.
Thanks and reading the daily digest of what you guys are working on.
I have a feeling if I am not careful you guys could cost me a lot of money. hehe
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