Great work Dave! That's terrific. Brian KB1VBF
Sent from my iPad > On Nov 27, 2014, at 5:02 AM, David Anderson <gm4...@yahoo.co.uk> 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 <wb4...@gmail.com> 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 <kengk...@gmail.com> 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:Elecraft@mailman.qth.net <javascript:;> >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >>> Message delivered to wb4...@gmail.com <javascript:;> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to gm4...@yahoo.co.uk > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to b.den...@comcast.net ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
