[time-nuts] Somewhat OT: Resurrecting a Symmetricom ND-4 Clock / Date display with a Raspberry Pi.

[Warren Kumari]

Hi all,

I've had a broken Symmetricom ND-4 NTP Clock sitting around for a
time, and it somehow turned into one of those OCD projects which I
just couldn't drop. I wanted an NTP display to show what my time is,
and this was such a simple device that the fact I couldn't fix it
really bugged me. Yes, I put in way more time than the device was
worth, but I ended up with an easy fix.

Last weekend I'd finally had enough and so ripped out the processor
board and replaced it with a Raspberry Pi Zero W, running NTP and
taking to the display directly.

It seems that these ND-4 / ND-2 devices used to be fairly popular, but
had a relatively high failure rate. They are also EOL.

If anyone has a busticated one, it's really easy to replace the board
with a Pi. I've put a short writeup here:
https://www.kumari.net/index.php/projects/random-projects/94-replacing-a-symmetricom-nd-4-processor-with-a-raspberry-pi
and the (trivial) code is here:
https://github.com/wkumari/symmetricom-nd4-python

W

-- 
I don't think the execution is relevant when it was obviously a bad
idea in the first place.
This is like putting rabid weasels in your pants, and later expressing
regret at having chosen those particular rabid weasels and that pair
of pants.
   ---maf