[time-nuts] Affordable PoE 6-digit time displays?

Bob kb8tq kb8tq at n1k.org
Fri Jun 15 14:29:37 EDT 2018


Hi

There are an enormous number of displays out there that will interface with the little boards. You can spend a little or you 
can spend a *lot*. At least in terms of size, it is a bit of a “you get what you pay for” sort of thing. Some of the  larger LED 
arrays look pretty impressive. Cost wise … yikes …..

You also get off into a whole variety of rabbit holes to wander down. Do you want to be able to use voice commands to change
what the clock shows? ….. lots of ways to soak up a lot of time ….

Bob

> On Jun 15, 2018, at 1:17 PM, David Andersen <dave.andersen at gmail.com> wrote:
> 
> Thanks, all - sounds like either finding a cheap IRIG display or hacking up a pi/arduino/etc. version will be the path forward.  The IRIG displays I can find quickly on ebay are still priced for people building music studios, so...
> 
> RPi 3 B+ supports PoE with an extra hat, and you can get pi-powered 3.5" TFTs cheaply.  This may work best.
> 
> A friend also pointed me to some networked dot-matrix displays that will do NTP from timemachinescorp, which might be a fun diversion. :); -Dave
> 
> 
>   -Dave
> 
> 
> On Fri, Jun 15, 2018 at 12:52 PM Bob kb8tq <kb8tq at n1k.org <mailto:kb8tq at n1k.org>> wrote:
> Hi
> 
> I suspect part of the answer is “they are cool looking stuff, grab it when it’s swapped out” ….
> They are out there, but not on the surplus market.
> 
> Bob
> 
> > On Jun 15, 2018, at 12:10 PM, Martin VE3OAT <ve3oat at storm.ca <mailto:ve3oat at storm.ca>> wrote:
> > 
> > What about the clock part of the old AN/GSQ-53A frequency/time rack?
> > 
> > It wasn't NTP of course, but ran off of 1 MHz (as I recall) and generated IRIG-B for remote displays.  The rack included a nice Sulzer crystal oscillator (plus a spare), later upgraded to HP rubidium RVFS (5061A?).
> > 
> > There must have been thousands of them made for US DoD and NASA.  We had at least a dozen in Canada that I know of (5 field sites, plus spares).
> > 
> > Where did they all go?
> > 
> > ... Martin   VE3OAT
> > 
> > 
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