[time-nuts] NTP Clock suggestions?

[Bob Camp]

Hi

If you go with the Pi's I2C port, it's strictly a 3.3 volt port. Some (but not all)  of the display boards are 5V gizmos. 

If you go with a WiFi approach, be careful about latency. NTP only understands symmetric delays. Of course if you are on a cable modem there's noting in the WiFi that's worse than what you already have. 

Bob

On May 27, 2013, at 1:25 PM, mike cook <mc235960 at gmail.com> wrote:

> 
> Le 27 mai 2013 à 16:56, Miguel Barbosa Gonçalves a écrit :
>> 
>> I don't understand why a microprocessor with an Ethernet controller and a 7
>> segment display would cost so much to manufacture... I think I'll build my
>> own.
>> 
> 
>  One advantage of having an OS and NTP client on board is that you get automatic TZ and DST offsets if you want. A Pi  also works fine with a USB WiFi dongle so no ugly CAT5 wiring required. One of the Pi s I2C buses could be used to drive a 7 seg display controller such as those from Adafruit.  
> As you would have the full TCP stack you could configure it over the same wiFi . It's not Windows but doesn't need  much power so long as you don't want to drive giant LEDs.
> 
>>> 
>> 
>> Good joke :-) I imagine the electricity bill at the end of the month.
>> 
>> I would like to have a clock sync with my super precise stratum 1 servers
>> :-) what's the point in having them if I can see the time anywhere? :-)
>> 
>> Cheers,
>> Miguel
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