OT: 24 HR stand-alone shack clocks
Locked
OT: 24 HR stand-alone shack clocks
 
|
I have a couple of JAMECO kit 24 HR clocks with 1" 7-segment red display.
They aren't WWVB-synched. 73 Ken Kopp - K0PP ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
|
|
I built my own 24 hr dual zone station clock. It uses a WiFi link to keep
synchronized time. Never have to set it and always accurate. Details: http://wb4son.com/wpblog/?page_id=716 73, Bib, WB4SON On Wednesday, November 26, 2014, Ken G Kopp <[hidden email]> wrote: > I have a couple of JAMECO kit 24 HR clocks with 1" 7-segment red display. > They aren't WWVB-synched. > > 73 > > Ken Kopp - K0PP > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] <javascript:;> > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] <javascript:;> > Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email]
73, Bob, WB4SON
|
|
|
For decades I used a homebuilt LED shack clock using a GI clock chip
AY5-1224. It used the mains frequency for time keeping so the long term accuracy was good. Recently it became faulty and I could not get a replacement chip, so I decided to build something similar but more modern. (I do have a clock that is synchronised to 60KHz MSF but it is local time only, not UTC). I wanted something that would just give me auto setting, choice of UTC or Local time with auto DST. A bit of overkill for a 4 digit shack clock, but I used an Arduino, a GPS module, and an IR controller to switch modes etc. I did try it without the GPS conditioning but the RTC I had was very poor and even with calibration routines was less accurate than my old mains frequency clock, so I went for GPS which gave me auto setting as well. Nobody in their right mind would probably want to duplicate it, but anyway I put the details on: http://sourceforge.net/projects/arduinoledgpsclock/ Still to put it all in a box, but it works great. Full disclosure: I am a time nut! ;-) 73 David Anderson GM4JJJ > On 27 Nov 2014, at 00:25, Bob <[hidden email]> wrote: > > I built my own 24 hr dual zone station clock. It uses a WiFi link to keep > synchronized time. Never have to set it and always accurate. > > Details: http://wb4son.com/wpblog/?page_id=716 > > 73, Bib, WB4SON > > > > >> On Wednesday, November 26, 2014, Ken G Kopp <[hidden email]> wrote: >> >> I have a couple of JAMECO kit 24 HR clocks with 1" 7-segment red display. >> They aren't WWVB-synched. >> >> 73 >> >> Ken Kopp - K0PP >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:[hidden email] <javascript:;> >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to [hidden email] <javascript:;> > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
|
|
Great work Dave! That's terrific.
Brian KB1VBF Sent from my iPad > On Nov 27, 2014, at 5:02 AM, David Anderson <[hidden email]> wrote: > > For decades I used a homebuilt LED shack clock using a GI clock chip > AY5-1224. It used the mains frequency for time keeping so the long term accuracy was good. > > Recently it became faulty and I could not get a replacement chip, so I decided to build something similar but more modern. > > (I do have a clock that is synchronised to 60KHz MSF but it is local time only, not UTC). > > I wanted something that would just give me auto setting, choice of UTC or Local time with auto DST. > > A bit of overkill for a 4 digit shack clock, but I used an Arduino, a GPS module, and an IR controller to switch modes etc. > > I did try it without the GPS conditioning but the RTC I had was very poor and even with calibration routines was less accurate than my old mains frequency clock, so I went for GPS which gave me auto setting as well. > > Nobody in their right mind would probably want to duplicate it, but anyway I put the details on: > > http://sourceforge.net/projects/arduinoledgpsclock/ > > Still to put it all in a box, but it works great. > > Full disclosure: I am a time nut! ;-) > > 73 > > David Anderson GM4JJJ > >> On 27 Nov 2014, at 00:25, Bob <[hidden email]> wrote: >> >> I built my own 24 hr dual zone station clock. It uses a WiFi link to keep >> synchronized time. Never have to set it and always accurate. >> >> Details: http://wb4son.com/wpblog/?page_id=716 >> >> 73, Bib, WB4SON >> >> >> >> >>> On Wednesday, November 26, 2014, Ken G Kopp <[hidden email]> wrote: >>> >>> I have a couple of JAMECO kit 24 HR clocks with 1" 7-segment red display. >>> They aren't WWVB-synched. >>> >>> 73 >>> >>> Ken Kopp - K0PP >>> ______________________________________________________________ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:[hidden email] <javascript:;> >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >>> Message delivered to [hidden email] <javascript:;> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:[hidden email] >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to [hidden email] > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
«
Return to Elecraft
|
1 view|%1 views
| Free forum by Nabble | Edit this page |