I just finished an LED clock kit that can be found on hackaday.io by Nick Sayer. Below is a link to a couple of one take videos <https://www.youtube.com/watch?v=cAXFDt3PBJg> I made of the clock. It's a nice piece of eye candy. I haven't see an LED clock kit like this that uses a lite distribution of Linux where you have a server for the clock running NTP. The code that runs the clock is a C program that you compile and run when the OS boots up. It's nice that the PI Zero W is wireless for the clock... where it looks like a regular desk clock, but for the time-nut you can ssh in and check things out and look at loopstats etc...an NTP driven desk clock with 10ths of seconds. YouTube Video <https://www.youtube.com/watch?v=cAXFDt3PBJg>: https://www.youtube.com/watch?v=cAXFDt3PBJg Pictures <http://www.nc7j.com/pa/main.php?cmd=album&var1=NG7M%2FRaspberry+PI%2FPI+Zero+W%2FDesktop+NTP+Clock> : http://www.nc7j.com/pa/main.php?cmd=album&var1=NG7 M%2FRaspberry+PI%2FPI+Zero+W%2FDesktop+NTP+Clock I have no connection to the creator of the project or reason to give the project a plug other than I had fun making the simple kit and setting up Raspbian Lite to drive the PI Zero W., The creator of the kit is Nick Sayer on hackaday.io <https://hackaday.io/project/20156-raspberry-pi-zero-w-desk-clock>, I suspect he might get a few more looks at this project now: https://hackaday.io/project/20156-raspberry-pi-zero-w-desk-clock Enjoy, Max NG7M -- M. George

Take a bow, Nick! :-) > On Jul 1, 2017, at 9:45 PM, M. George <m.matthew.george@gmail.com> wrote: > > I just finished an LED clock kit that can be found on hackaday.io by Nick > Sayer. Below is a link to a couple of one take videos > <https://www.youtube.com/watch?v=cAXFDt3PBJg> I made of the clock. It's a > nice piece of eye candy. I haven't see an LED clock kit like this that > uses a lite distribution of Linux where you have a server for the clock > running NTP. The code that runs the clock is a C program that you compile > and run when the OS boots up. It's nice that the PI Zero W is wireless for > the clock... where it looks like a regular desk clock, but for the time-nut > you can ssh in and check things out and look at loopstats etc...an NTP > driven desk clock with 10ths of seconds. > > YouTube Video <https://www.youtube.com/watch?v=cAXFDt3PBJg>: > https://www.youtube.com/watch?v=cAXFDt3PBJg > > Pictures > <http://www.nc7j.com/pa/main.php?cmd=album&var1=NG7M%2FRaspberry+PI%2FPI+Zero+W%2FDesktop+NTP+Clock> > : http://www.nc7j.com/pa/main.php?cmd=album&var1=NG7 > M%2FRaspberry+PI%2FPI+Zero+W%2FDesktop+NTP+Clock > > I have no connection to the creator of the project or reason to give the > project a plug other than I had fun making the simple kit and setting up > Raspbian Lite to drive the PI Zero W., The creator of the kit is Nick Sayer > on hackaday.io > <https://hackaday.io/project/20156-raspberry-pi-zero-w-desk-clock>, I > suspect he might get a few more looks at this project now: > https://hackaday.io/project/20156-raspberry-pi-zero-w-desk-clock > > Enjoy, Max NG7M > > -- > M. George > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there.

I have been thinking about doing similar with an ESP8266 controller (which start around $2). All the other machines in my house are locked to GPS at either stratum 1 or stratum 2 so there are plenty of local good time sources. The ESP8266 has 64K, WiFi and a IP stack but does not run a real operating system or ntpd. It does have kind of a multithreading scripting executive (LUA). I would "homebrew" my own time discipline and peer selection algorithms using much simpler tools, rather than full-blown ntpd. Simply asking a local computer for ntp time is straightforward enough, then I add some local time and frequency discipline on top of that. After all, real NTP a couple decades ago ran on Fuzzballs which were PDP-11's. I think at first they just calculated time offset from the 60Hz line clock (16ms granularity) but I also recall a millisecond tick crystal clock they could do frequency discipline on? All that fit on a PDP-11 nicely so I ought to be able to get much of it into an ESP8266. Tim N3QE On Sat, Jul 1, 2017 at 9:45 PM, M. George <m.matthew.george@gmail.com> wrote: > I just finished an LED clock kit that can be found on hackaday.io by Nick > Sayer. Below is a link to a couple of one take videos > <https://www.youtube.com/watch?v=cAXFDt3PBJg> I made of the clock. It's a > nice piece of eye candy. I haven't see an LED clock kit like this that > uses a lite distribution of Linux where you have a server for the clock > running NTP. The code that runs the clock is a C program that you compile > and run when the OS boots up. It's nice that the PI Zero W is wireless for > the clock... where it looks like a regular desk clock, but for the time-nut > you can ssh in and check things out and look at loopstats etc...an NTP > driven desk clock with 10ths of seconds. > > YouTube Video <https://www.youtube.com/watch?v=cAXFDt3PBJg>: > https://www.youtube.com/watch?v=cAXFDt3PBJg > > Pictures > <http://www.nc7j.com/pa/main.php?cmd=album&var1=NG7M% > 2FRaspberry+PI%2FPI+Zero+W%2FDesktop+NTP+Clock> > : http://www.nc7j.com/pa/main.php?cmd=album&var1=NG7 > M%2FRaspberry+PI%2FPI+Zero+W%2FDesktop+NTP+Clock > > I have no connection to the creator of the project or reason to give the > project a plug other than I had fun making the simple kit and setting up > Raspbian Lite to drive the PI Zero W., The creator of the kit is Nick Sayer > on hackaday.io > <https://hackaday.io/project/20156-raspberry-pi-zero-w-desk-clock>, I > suspect he might get a few more looks at this project now: > https://hackaday.io/project/20156-raspberry-pi-zero-w-desk-clock > > Enjoy, Max NG7M > > -- > M. George > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > and follow the instructions there. >

There already exists an NTP for ESP8266. At least a simple one. Look over on GitHub. On Sun, Jul 2, 2017 at 5:27 AM, Tim Shoppa <tshoppa@gmail.com> wrote: > I have been thinking about doing similar with an ESP8266 controller -- Chris Albertson Redondo Beach, California