It looks like it’s a 32.768 kHz crystal and a series of frequency dividers. (maybe +/- a couple minutes per year?) I imagine (at a basic level) it’s a classic TTL clock in SMD form.
> On Aug 31, 2022, at 4:58 PM, Max Di Noi <flataeg...@gmail.com> wrote: > > I'd be curious to see how the timing circuit works and how accurate it is, I > believe Jeff didn't use a uC for that. > > -------- Original message -------- > From: Terry S <tschw10...@gmail.com> > Date: 31/08/2022 22:44 (GMT+00:00) > To: neonixie-l <neonixie-l@googlegroups.com> > Subject: Re: [neonixie-l] Jeff's Nixie watch parts layout or schematic? > > His son Christian reads this group, he may have the documentation. > >> On Tuesday, August 30, 2022 at 10:18:54 AM UTC-5 Greg P wrote: >> Hi Nick, >> >> I appreciate you sharing this BOM, but it's for the Commemorative clock >> which is the one that replaced the one I have. Mine is his first piece that >> used a modified Mike Harrison PCB and work on mains power not a 12V power >> supply. >> >>> On Tuesday, August 30, 2022 at 10:44:34 AM UTC-4 Pramanicin wrote: >>> Greg, I built one of these almost 20 years ago now....(wow). This is all >>> the documentation I have on it. Hope it helps. >>> >>> Nick >>> >>>> On Tue, Aug 30, 2022 at 7:40 AM 'Greg P' via neonixie-l >>>> <neoni...@googlegroups.com> wrote: >>>> Speaking of Jeff's stuff, does anyone have a manual or any documentation >>>> for that matter on this clock? >>>> >>>> http://www.nixie.dk/~jthomas/nixieclock.html >>>> >>>> This was the first clock he made for sale. >>>> >>>>> On Tuesday, August 30, 2022 at 12:30:29 AM UTC-4 bailey...@gmail.com >>>>> wrote: >>>>> That would be fantastic. You don't know how much misery that would >>>>> eliminate, every time I walk by those bags of parts. I was about to zoom >>>>> all the way in on the picture of the PCB on his site and try to read SMD >>>>> capacitor values! ;) >>>>> >>>>> Thanks!! >>>>> >>>>> ...R >>>>> >>>>>> On Monday, August 29, 2022 at 11:28:49 PM UTC-5 nixiebunny wrote: >>>>>> I think I have that information on my home computer. I'll be home >>>>>> Friday. >>>>>> >>>>>> >>>>>>> On Mon, Aug 29, 2022, 7:09 PM Rob Bailey <bailey...@gmail.com> wrote: >>>>>>> Ages ago, I purchased Jeff's Krusty Klown nixie watch kit [two, in >>>>>>> fact]: >>>>>>> >>>>>>> http://www.nixie.dk/~jthomas/watch.html >>>>>>> >>>>>>> Of all parts of a kit to lose, I lost the paperwork [i.e., schematic >>>>>>> and, critically, the parts placement guide]. I was able to contact the >>>>>>> project owner, but he said he no longer had any of the documentation >>>>>>> [!]. I'd like to build the kits, bit I'm at the mercy of guesswork, >>>>>>> which I'd obviously like to avoid. >>>>>>> >>>>>>> Does anyone know where I can track that parts placement sheet down, or >>>>>>> better yet have one that I can grab a scan of? >>>>>>> >>>>>>> Thanks! >>>>>> >>>>>>> -- >>>>>>> You received this message because you are subscribed to the Google >>>>>>> Groups "neonixie-l" group. >>>>>>> To unsubscribe from this group and stop receiving emails from it, send >>>>>>> an email to neonixie-l+...@googlegroups.com. >>>>>>> To view this discussion on the web, visit >>>>>>> https://groups.google.com/d/msgid/neonixie-l/56b72986-ba38-4895-9f19-d8eaacd0499an%40googlegroups.com. >>>> >>>> -- >>>> You received this message because you are subscribed to the Google Groups >>>> "neonixie-l" group. >>>> To unsubscribe from this group and stop receiving emails from it, send an >>>> email to neonixie-l+...@googlegroups.com. >>> >>>> To view this discussion on the web, visit >>>> https://groups.google.com/d/msgid/neonixie-l/e94c9f40-500f-42bc-93a8-3708026dee59n%40googlegroups.com. > > -- > You received this message because you are subscribed to the Google Groups > "neonixie-l" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to neonixie-l+unsubscr...@googlegroups.com. > To view this discussion on the web, visit > https://groups.google.com/d/msgid/neonixie-l/34024632-750a-4594-964d-6ad2a22216b6n%40googlegroups.com. > -- > You received this message because you are subscribed to the Google Groups > "neonixie-l" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to neonixie-l+unsubscr...@googlegroups.com. > To view this discussion on the web, visit > https://groups.google.com/d/msgid/neonixie-l/630ff5bf.050a0220.e2ea2.9527%40mx.google.com. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/2065BFFC-978A-46A4-B262-9FC611ABD0F9%40gmail.com.
