Hello! that's crazy!!! haha
Yes, I was thinking to put a RTC on my watch, but it is more space. that's my second option If I dont fix really good the time delay. But, as I know, With the RTC for example DS3232, you also need to put an external cristal right? so, does theDS3232 regulate this time delay in any form? thanks a lot! El lunes, 19 de abril de 2021 a las 18:14:25 UTC+2, gregebert escribió: > I highly recommend a DS3232; it's very accurate, has the internal crystal, > and requires very little power. > > My nixie watch debug board has been sitting in the garage and has not been > adjusted since March 2015 and it's gained less than 2 minutes after 6 > years. Another interesting fact is the battery (used 1100mAh cellphone > battery) will need it's first recharge today after 6 years of usage. Most > of the time it sits there with the display off, so only the RTC and the > leakage of the voltage regulator cause the battery to drain. But it's > rather amazing that a well-used Li-ion battery could last that long on a > single charge. > > On Monday, April 19, 2021 at 5:34:49 AM UTC-7 Bill van Dijk wrote: > >> If you are still slow with the 10pF, a 12pF is not going to do it. The >> relationship between the crystal and load capacitor is critical, and it is >> therefore a mystery to me that so many (of the cheaper) are sold without >> the specifications. Anyway, if yours is a cheap Chinese crystal, try some >> other ones, perhaps you just got a bad one. Generally I always like to get >> a good brand name crystal. If you want to play with the one you have, try >> something lower yet, 8 or 7pF. >> >> >> >> In general terms, and within limits, larger cap slows it down, smaller >> cap speeds it up. Sometimes (if you use 2 caps) using a slightly different >> cap on one leg of the crystal can make a difference in the final frequency. >> >> >> >> Bill >> >> >> >> *From:* [email protected] [mailto:[email protected]] *On >> Behalf Of *MrThe50sanchez >> *Sent:* Monday, April 19, 2021 4:23 AM >> *To:* neonixie-l <[email protected]> >> *Subject:* [neonixie-l] CRISTAL + CAPACITOR = TIME DELAY HELP >> >> >> >> Hello Guys! >> >> >> >> I have a nice question to ask you guys if you can give me some help. >> >> >> >> I builded a Nixie watch, It works good, but I'm having a little bit of >> time delay, 1* min within 6 hours. * >> >> >> >> At the *first time,* I had 6 min delay for 6 hours aproximately. I >> investigated the relation of the cristal and the capacitors you need to >> install with it. First, I had 22pF for a cristal that requires 12.5pF, >> giving me that 6 min delay for 6 hours, then, I realised these and >> installed 10Pf capacitor and the delay decreased to 1 minute for 6 hours, >> and I just ordered new capacitors of 12pF to get more closer to the >> manufacture requires, So I imagine that the delay is gonna get less. >> >> >> >> ·Is there any way to make this time delay shorter? >> >> ·Do you recommend me a tipe of cristal that is really acurate to install >> on my watch? >> >> >> >> Thanks a lot nixie lover's >> >> >> >> -- >> 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 [email protected]. >> To view this discussion on the web, visit >> https://groups.google.com/d/msgid/neonixie-l/7ce2b557-f652-44b2-a71f-ed75b96ea06fn%40googlegroups.com >> >> <https://groups.google.com/d/msgid/neonixie-l/7ce2b557-f652-44b2-a71f-ed75b96ea06fn%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> > -- 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 [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/576f14e0-a886-4279-b878-15c045616411n%40googlegroups.com.
