If you're going with SMD components, you can also try using a SMD crystal
to simplify the build process some more. I used this one for example
(although currently out of stock, but there are probably similar ones)
Hello!
It looks like I was in a Mistake with the datasheet of the crystal,
thinking that the 6.0 to 12.5 pf capacitors would be perfect for the time
running perfect, But with this configuration, I have like 2 mins of delay
in 24H.
I really appreciate the help, Just took a quick look and you are
It is gaining time, or losing time ?
If it's losing time, could it be caused by execution delays in your
software ? I've seen some really bizarre things happening with my Raspberry
Pi based clocks because of the chaotic behavior of Linux, and I have even
seen metastability-related failures due
The capacitance you cite from the datasheet is not the recommended
capacitance for the external capacitors, it is the load capacitance of the
crystal - you must check your ordering document to see which crystal you
got unless you can read the information on the crystal itself if it is
laser
Hello Again group!
I've been testing this for a while, and I still have some delay minutes.
This is the PCB design I'm using and components.
*Components: *
·PIC16F1936
·CRYSTAL MS3V-T1R CRYSTAL 32.768 Khz.
·Capacitors ( used 6.0 ; 7.0 ; 9.0 & 12.5) pF as datasheet from crystal
recommend.
Since this is a Tuning Fork type of crystal they are sensitive to to much
energy and might become damaged if you use them incorrectly. You should
read this article:
http://ww1.microchip.com/downloads/en/appnotes/91097a.pdf and also read the
Microchip application note above that Bill van Dijk
Wow!
That's an interesting Idea too! Yes, here in Spain we have a lot of street
markets where you can find a lot of electronic waste components.
I will let you know How this works out!!
Thanks a lot for the help.
El jue, 20 may 2021 a las 16:03, jf...@my-deja.com ()
escribió:
> All the cheap
What PIC-controller is the crystal hooked up to? Did you follow the design
specifications for using the crystal you chose?
/Martin
On Thursday, 20 May 2021 at 16:03:55 UTC+2 jf...@my-deja.com wrote:
> All the cheap watches and clock movements seem to use the same small
> cylindrical crystal.
All the cheap watches and clock movements seem to use the same small
cylindrical crystal. I got many of mine by taking them out of old watches
or clocks that had stopped working properly (like worn out gears in a
clock). If you do not already have any in your junk box, you should be
able to
As long as you are still trying things, you should try different crystals.
Instead of New Old Stock from a surplus electronics dealer (probably from
the 1970s wen quality control was not very good), you could take one out of
a clock or watch mechanism that does a good job keeping time (the
Hello!
First of all I did a new design of the PCB which I added closer track
between the cristal and the PIC pins. Also changed from 0603 encapsulated
capacitors to 1206 to have a better pad for soldering.
These are the test I'm doing thanks to the nixie community and internet
research.
1. I'm
Did you ever get it t run at the correct speed? If so, how did you fix it?
On Monday, April 19, 2021 at 1:23:22 AM UTC-7 MrThe50sanchez wrote:
> I builded a Nixie watch, It works good, but I'm having a little bit of
> time delay, 1* min within 6 hours. *
>
--
You received this message
12 matches
Mail list logo
