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

Tim Shoppa tshoppa at gmail.com
Fri Jun 15 14:38:00 EDT 2018


At work we have POE LED clocks, I think 2.5", circa $400-$500. So your $300
price you've been seeing is about right.

In terms of homebrew:

I bought a bunch of 3.5" high green Seven-segment displays 10+ years ago.
Cheap, really cheap at the time!

Was always intending to build a 6-digit clock with them but never got
around to it.

I have been having fun with ESP8266's (small cheap microcontrollers with
WiFi) for other projects. If I were to do a NTP clock it would use the
ESP8266 and NTP protocol over Wi-Fi. Not real NTPD, just NTP UDP packets
plus a teeny bit of local dead reckoning.

Tim N3QE

On Thu, Jun 14, 2018 at 9:15 PM, David Andersen <dave.andersen at gmail.com>
wrote:

> I'd hoped that ebay or aliexpress would yield a bounty given how seemingly
> simple these are, but I'm drawing a blank (and finding a lot of $300+ new
> options).  Anyone have a favorite source for either flat wall-mount or
> rackmount displays that will pull from an NTP/SNTP/whatever server?
>
> (if wall-mount, PoE is optimal).  Used good.  Cheap good.  Looks good next
> to my random collection of antiquated time measurement gear provides
> amusement value but isn't really critical. :-)
>
> Thanks!
>
>   -Dave
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