Re: [time-nuts] A man with two clocks...
Still laughing. Actually I did it aurally. The GPS clock announces the time on the hour with a series of beeps similar to the old BBC time and the WWVB clock has an alarm which I can set to sound on the hour. The time interval is an estimation. Someday I will use a microphone connected to a storage oscilloscope to figure out what the difference is. Regards. Max. K 4 O DS. Email: m...@maxsmusicplace.com Transistor site http://www.funwithtransistors.net Vacuum tube site: http://www.funwithtubes.net Woodworking site http://www.angelfire.com/electronic/funwithtubes/Woodworking/wwindex.html Music site: http://www.maxsmusicplace.com To subscribe to the fun with transistors group send an email to. funwithtransistors-subscr...@yahoogroups.com To subscribe to the fun with tubes group send an email to, funwithtubes-subscr...@yahoogroups.com To subscribe to the fun with wood group send a blank email to funwithwood-subscr...@yahoogroups.com - Original Message - From: "Tom Knox" To: "Time-Nuts" Sent: Thursday, October 03, 2013 1:46 PM Subject: Re: [time-nuts] A man with two clocks... It is all a matter of proper placement, now I know you are expecting a tirade on propagation delay and antenna placement and cable length. But actually my thought is to place them far enough apart with the WWV clock in front of your and your GPS at a 12-15 degree angle so it takes 0.2 second to look from one to the other. Thomas Knox From: david-tay...@blueyonder.co.uk To: time-nuts@febo.com Date: Thu, 3 Oct 2013 19:22:04 +0100 Subject: Re: [time-nuts] A man with two clocks... Among my time nut toys is a Consumer grade GPS clock and a similar WWVB clock. The WWVB clock consistently runs about 0.2 seconds ahead of the GPS one. I know no one can say why without knowing the particulars of the two clock's circuits. Just thought I'd post it for what it's worth. Regards. Max. K 4 O DS. === Max, I see similar things here. I've always put it down to relatively poor circuitry in the radio clock, which is why I built my NTP-controlled wall clock! http://www.satsignal.eu/raspberry-pi/DigitalClock.html One radio clock is below. That particular MSF clock is actually not too bad - visibly it's in sync with the NTP clock (which itself is within a few microseconds of GPS time). 73, David GM8ARV -- SatSignal Software - Quality software written to your requirements Web: http://www.satsignal.eu Email: david-tay...@blueyonder.co.uk ___ 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. ___ 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. ___ 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.
Re: [time-nuts] A man with two clocks...
Max, This is a very interesting project and well documented, thank you! Didier KO4BB David J Taylor wrote: >Among my time nut toys is a Consumer grade GPS clock and a similar WWVB >clock. The WWVB clock consistently runs about 0.2 seconds ahead of the >GPS >one. I know no one can say why without knowing the particulars of the >two >clock's circuits. Just thought I'd post it for what it's worth. > >Regards. > >Max. K 4 O DS. >=== > >Max, > >I see similar things here. I've always put it down to relatively poor >circuitry in the radio clock, which is why I built my NTP-controlled >wall >clock! > > http://www.satsignal.eu/raspberry-pi/DigitalClock.html > >One radio clock is below. That particular MSF clock is actually not >too >bad - visibly it's in sync with the NTP clock (which itself is within a >few >microseconds of GPS time). > >73, >David GM8ARV >-- >SatSignal Software - Quality software written to your requirements >Web: http://www.satsignal.eu >Email: david-tay...@blueyonder.co.uk > >___ >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. -- Sent from my Motorola Droid Razr 4G LTE wireless tracker while I do other things. ___ 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.
Re: [time-nuts] A man with two clocks...
No, my code is not posted anywhere but I would be glad to email it to anyone interested. Cheers, Graham -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Phil Genera Sent: October-03-13 6:44 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] A man with two clocks... Is your code posted anywhere? I've been meaning to do roughly the same. -- Phil On Oct 3, 2013 12:07 PM, "Collins, Graham" wrote: > David, > > Your raspberry-pi NTP clock is very cool. > > I have put together something along the same line but is in reality > just a network connected NTP disciplined clock display using an > Arduino and a typical 16x2 LCD housed in a small project box. > > The Arduino has a network shield and get's it power from a USB port > although it could be powered by a battery or wall wart type of supply. > > When it starts, the device attempts to get an IP address using DHCP. > Once that is sorted it attempts to sync to my local GPS disciplined > NTP server, then sets and displays it's time. It resyncs every some > value between 15 and 30 minutes with the NTP server. If ever my local > NTP server can't be found, it will attempt to sync to an outside NTP > server on the internet. It keeps pretty good time, not "time nuts" > level but is always within a few tenths of a second which is suitable for > it's intended purpose. > > Basic time keeping of the Arduino uses it's 16MHz crystal clock and > there is some provision for adjusting in code which I have done to > improve it's time keeping. I am toying with the idea of adding a 1 PPS > input but just haven't gotten round to it yet. > > All the bits and pieces of the code was copied from existing projects > and libraries it being just a matter of finding the appropriate bits > and pieces, putting them together and making changes in a few places > to improve it's time keeping. It was a fun project to put together and > has proven so useful in my lab that I will probably put together a couple > more. > > Cheers, Graham ve3gtc > > > === > > Max, > > I see similar things here. I've always put it down to relatively poor > circuitry in the radio clock, which is why I built my NTP-controlled > wall clock! > > http://www.satsignal.eu/raspberry-pi/DigitalClock.html > > One radio clock is below. That particular MSF clock is actually not > too bad - visibly it's in sync with the NTP clock (which itself is > within a few microseconds of GPS time). > > 73, > David GM8ARV > -- > SatSignal Software - Quality software written to your requirements > Web: http://www.satsignal.eu > Email: david-tay...@blueyonder.co.uk > . > ___ > 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. > ___ 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. ___ 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.
Re: [time-nuts] A man with two clocks...
Sorry, I was looking for Graham's Arduino code; clearly my comprehension and clarity limited on the phone. On Oct 3, 2013 3:53 PM, "Sarah White" wrote: > http://www.satsignal.eu/raspberry-pi/DigitalClock.html > > third paragraph: > > I've provided the source and binary files in >>>this<<< Zip archive, so > you can either run the program as-is, or modify it to suit your own > preferences. > > On 10/3/2013 6:43 PM, Phil Genera wrote: > > Is your code posted anywhere? I've been meaning to do roughly the same. > > > > -- Phil > > On Oct 3, 2013 12:07 PM, "Collins, Graham" wrote: > > > >> David, > >> > >> Your raspberry-pi NTP clock is very cool. > >> > >> I have put together something along the same line but is in reality > just a > >> network connected NTP disciplined clock display using an Arduino and a > >> typical 16x2 LCD housed in a small project box. > >> > >> The Arduino has a network shield and get's it power from a USB port > >> although it could be powered by a battery or wall wart type of supply. > >> > >> When it starts, the device attempts to get an IP address using DHCP. > Once > >> that is sorted it attempts to sync to my local GPS disciplined NTP > server, > >> then sets and displays it's time. It resyncs every some value between 15 > >> and 30 minutes with the NTP server. If ever my local NTP server can't be > >> found, it will attempt to sync to an outside NTP server on the > internet. It > >> keeps pretty good time, not "time nuts" level but is always within a few > >> tenths of a second which is suitable for it's intended purpose. > >> > >> Basic time keeping of the Arduino uses it's 16MHz crystal clock and > there > >> is some provision for adjusting in code which I have done to improve > it's > >> time keeping. I am toying with the idea of adding a 1 PPS input but just > >> haven't gotten round to it yet. > >> > >> All the bits and pieces of the code was copied from existing projects > and > >> libraries it being just a matter of finding the appropriate bits and > >> pieces, putting them together and making changes in a few places to > improve > >> it's time keeping. It was a fun project to put together and has proven > so > >> useful in my lab that I will probably put together a couple more. > >> > >> Cheers, Graham ve3gtc > >> > >> > >> === > >> > >> Max, > >> > >> I see similar things here. I've always put it down to relatively poor > >> circuitry in the radio clock, which is why I built my NTP-controlled > wall > >> clock! > >> > >> http://www.satsignal.eu/raspberry-pi/DigitalClock.html > >> > >> One radio clock is below. That particular MSF clock is actually not too > >> bad - visibly it's in sync with the NTP clock (which itself is within a > few > >> microseconds of GPS time). > >> > >> 73, > >> David GM8ARV > >> -- > >> SatSignal Software - Quality software written to your requirements > >> Web: http://www.satsignal.eu > >> Email: david-tay...@blueyonder.co.uk > >> . > >> ___ > >> 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. > >> > > ___ > > 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. > > > > ___ > 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. > ___ 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.
Re: [time-nuts] A man with two clocks...
http://www.satsignal.eu/raspberry-pi/DigitalClock.html third paragraph: I've provided the source and binary files in >>>this<<< Zip archive, so you can either run the program as-is, or modify it to suit your own preferences. On 10/3/2013 6:43 PM, Phil Genera wrote: > Is your code posted anywhere? I've been meaning to do roughly the same. > > -- Phil > On Oct 3, 2013 12:07 PM, "Collins, Graham" wrote: > >> David, >> >> Your raspberry-pi NTP clock is very cool. >> >> I have put together something along the same line but is in reality just a >> network connected NTP disciplined clock display using an Arduino and a >> typical 16x2 LCD housed in a small project box. >> >> The Arduino has a network shield and get's it power from a USB port >> although it could be powered by a battery or wall wart type of supply. >> >> When it starts, the device attempts to get an IP address using DHCP. Once >> that is sorted it attempts to sync to my local GPS disciplined NTP server, >> then sets and displays it's time. It resyncs every some value between 15 >> and 30 minutes with the NTP server. If ever my local NTP server can't be >> found, it will attempt to sync to an outside NTP server on the internet. It >> keeps pretty good time, not "time nuts" level but is always within a few >> tenths of a second which is suitable for it's intended purpose. >> >> Basic time keeping of the Arduino uses it's 16MHz crystal clock and there >> is some provision for adjusting in code which I have done to improve it's >> time keeping. I am toying with the idea of adding a 1 PPS input but just >> haven't gotten round to it yet. >> >> All the bits and pieces of the code was copied from existing projects and >> libraries it being just a matter of finding the appropriate bits and >> pieces, putting them together and making changes in a few places to improve >> it's time keeping. It was a fun project to put together and has proven so >> useful in my lab that I will probably put together a couple more. >> >> Cheers, Graham ve3gtc >> >> >> === >> >> Max, >> >> I see similar things here. I've always put it down to relatively poor >> circuitry in the radio clock, which is why I built my NTP-controlled wall >> clock! >> >> http://www.satsignal.eu/raspberry-pi/DigitalClock.html >> >> One radio clock is below. That particular MSF clock is actually not too >> bad - visibly it's in sync with the NTP clock (which itself is within a few >> microseconds of GPS time). >> >> 73, >> David GM8ARV >> -- >> SatSignal Software - Quality software written to your requirements >> Web: http://www.satsignal.eu >> Email: david-tay...@blueyonder.co.uk >> . >> ___ >> 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. >> > ___ > 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. > ___ 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.
Re: [time-nuts] A man with two clocks...
Is your code posted anywhere? I've been meaning to do roughly the same. -- Phil On Oct 3, 2013 12:07 PM, "Collins, Graham" wrote: > David, > > Your raspberry-pi NTP clock is very cool. > > I have put together something along the same line but is in reality just a > network connected NTP disciplined clock display using an Arduino and a > typical 16x2 LCD housed in a small project box. > > The Arduino has a network shield and get's it power from a USB port > although it could be powered by a battery or wall wart type of supply. > > When it starts, the device attempts to get an IP address using DHCP. Once > that is sorted it attempts to sync to my local GPS disciplined NTP server, > then sets and displays it's time. It resyncs every some value between 15 > and 30 minutes with the NTP server. If ever my local NTP server can't be > found, it will attempt to sync to an outside NTP server on the internet. It > keeps pretty good time, not "time nuts" level but is always within a few > tenths of a second which is suitable for it's intended purpose. > > Basic time keeping of the Arduino uses it's 16MHz crystal clock and there > is some provision for adjusting in code which I have done to improve it's > time keeping. I am toying with the idea of adding a 1 PPS input but just > haven't gotten round to it yet. > > All the bits and pieces of the code was copied from existing projects and > libraries it being just a matter of finding the appropriate bits and > pieces, putting them together and making changes in a few places to improve > it's time keeping. It was a fun project to put together and has proven so > useful in my lab that I will probably put together a couple more. > > Cheers, Graham ve3gtc > > > === > > Max, > > I see similar things here. I've always put it down to relatively poor > circuitry in the radio clock, which is why I built my NTP-controlled wall > clock! > > http://www.satsignal.eu/raspberry-pi/DigitalClock.html > > One radio clock is below. That particular MSF clock is actually not too > bad - visibly it's in sync with the NTP clock (which itself is within a few > microseconds of GPS time). > > 73, > David GM8ARV > -- > SatSignal Software - Quality software written to your requirements > Web: http://www.satsignal.eu > Email: david-tay...@blueyonder.co.uk > . > ___ > 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. > ___ 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.
Re: [time-nuts] A man with two clocks...
David, Your raspberry-pi NTP clock is very cool. I have put together something along the same line but is in reality just a network connected NTP disciplined clock display using an Arduino and a typical 16x2 LCD housed in a small project box. The Arduino has a network shield and get's it power from a USB port although it could be powered by a battery or wall wart type of supply. When it starts, the device attempts to get an IP address using DHCP. Once that is sorted it attempts to sync to my local GPS disciplined NTP server, then sets and displays it's time. It resyncs every some value between 15 and 30 minutes with the NTP server. If ever my local NTP server can't be found, it will attempt to sync to an outside NTP server on the internet. It keeps pretty good time, not "time nuts" level but is always within a few tenths of a second which is suitable for it's intended purpose. Basic time keeping of the Arduino uses it's 16MHz crystal clock and there is some provision for adjusting in code which I have done to improve it's time keeping. I am toying with the idea of adding a 1 PPS input but just haven't gotten round to it yet. All the bits and pieces of the code was copied from existing projects and libraries it being just a matter of finding the appropriate bits and pieces, putting them together and making changes in a few places to improve it's time keeping. It was a fun project to put together and has proven so useful in my lab that I will probably put together a couple more. Cheers, Graham ve3gtc === Max, I see similar things here. I've always put it down to relatively poor circuitry in the radio clock, which is why I built my NTP-controlled wall clock! http://www.satsignal.eu/raspberry-pi/DigitalClock.html One radio clock is below. That particular MSF clock is actually not too bad - visibly it's in sync with the NTP clock (which itself is within a few microseconds of GPS time). 73, David GM8ARV -- SatSignal Software - Quality software written to your requirements Web: http://www.satsignal.eu Email: david-tay...@blueyonder.co.uk . ___ 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.
Re: [time-nuts] A man with two clocks...
It is all a matter of proper placement, now I know you are expecting a tirade on propagation delay and antenna placement and cable length. But actually my thought is to place them far enough apart with the WWV clock in front of your and your GPS at a 12-15 degree angle so it takes 0.2 second to look from one to the other. Thomas Knox > From: david-tay...@blueyonder.co.uk > To: time-nuts@febo.com > Date: Thu, 3 Oct 2013 19:22:04 +0100 > Subject: Re: [time-nuts] A man with two clocks... > > Among my time nut toys is a Consumer grade GPS clock and a similar WWVB > clock. The WWVB clock consistently runs about 0.2 seconds ahead of the GPS > one. I know no one can say why without knowing the particulars of the two > clock's circuits. Just thought I'd post it for what it's worth. > > Regards. > > Max. K 4 O DS. > === > > Max, > > I see similar things here. I've always put it down to relatively poor > circuitry in the radio clock, which is why I built my NTP-controlled wall > clock! > > http://www.satsignal.eu/raspberry-pi/DigitalClock.html > > One radio clock is below. That particular MSF clock is actually not too > bad - visibly it's in sync with the NTP clock (which itself is within a few > microseconds of GPS time). > > 73, > David GM8ARV > -- > SatSignal Software - Quality software written to your requirements > Web: http://www.satsignal.eu > Email: david-tay...@blueyonder.co.uk > > ___ > 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. ___ 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.
Re: [time-nuts] A man with two clocks...
Among my time nut toys is a Consumer grade GPS clock and a similar WWVB clock. The WWVB clock consistently runs about 0.2 seconds ahead of the GPS one. I know no one can say why without knowing the particulars of the two clock's circuits. Just thought I'd post it for what it's worth. Regards. Max. K 4 O DS. === Max, I see similar things here. I've always put it down to relatively poor circuitry in the radio clock, which is why I built my NTP-controlled wall clock! http://www.satsignal.eu/raspberry-pi/DigitalClock.html One radio clock is below. That particular MSF clock is actually not too bad - visibly it's in sync with the NTP clock (which itself is within a few microseconds of GPS time). 73, David GM8ARV -- SatSignal Software - Quality software written to your requirements Web: http://www.satsignal.eu Email: david-tay...@blueyonder.co.uk ___ 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.
[time-nuts] A man with two clocks...
Among my time nut toys is a Consumer grade GPS clock and a similar WWVB clock. The WWVB clock consistently runs about 0.2 seconds ahead of the GPS one. I know no one can say why without knowing the particulars of the two clock's circuits. Just thought I'd post it for what it's worth. Regards. Max. K 4 O DS. Email: m...@maxsmusicplace.com Transistor site http://www.funwithtransistors.net Vacuum tube site: http://www.funwithtubes.net Woodworking site http://www.angelfire.com/electronic/funwithtubes/Woodworking/wwindex.html Music site: http://www.maxsmusicplace.com To subscribe to the fun with transistors group send an email to. funwithtransistors-subscr...@yahoogroups.com To subscribe to the fun with tubes group send an email to, funwithtubes-subscr...@yahoogroups.com To subscribe to the fun with wood group send a blank email to funwithwood-subscr...@yahoogroups.com ___ 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.
