I cant quite zoom-in enough, but it looks like you are using analog-ish ring counters, rather than digital ICs. Unless you have built this on a breadboard and tested it, or run SPICE simulations (hmmmm...might be tricky getting accurate modeling of neon bulbs and tubes).
For my first nixie clock, I extracted a netlist from the schematics, and ran Verilog simulations on the logic to confirm it worked correctly (it uses 4000-series CMOS), and I did SPICE simulations on the analog portions. I hate doing bench debug, so I always spend a lot of time simulating the design before fabbing the boards. You would be surprised how many stupid bugs I find from simulations, especially on things that should "just work". On Friday, July 18, 2025 at 5:12:01 PM UTC-7 Jarod Findley wrote: > > > https://drive.google.com/file/d/1-OQk9pM2vFbIHDEv9-DlOhHWoDQwO6y0/view?usp=sharing > Heres a link for the pdf i realized the picture is very low quality > On Friday, July 18, 2025 at 6:14:30 PM UTC-4 Jarod Findley wrote: > >> Hi all this is my second post and I'm still learning a lot about >> nixies-neon tubes and how they work. This is my first project design i used >> this schematic >> <https://www.pa3fwm.nl/projects/neonclock2/pa3fwm_neonclock2_schematic.pdf> >> to >> design a clock around in-28 neon tubes and some large size nixies like >> zin-70. I have not calculated values for the resistors and such nor have I >> tested anything yet. Id like to know if my design is correct before I move >> it into the real world. It will have a ring counter for the Hours, Minutes, >> Seconds, Am Pm, and a 60 ring counter to visually indicate the seconds. >> This will be a 12 hour clock and have Am Pm tubes. My plan is to design a >> nice case and have it displayed in my living room. I know its ambitious for >> a first time project and apricate any feed back, >> [image: Project 1-1.png] >> > -- 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, visit https://groups.google.com/d/msgid/neonixie-l/1b3d5ab2-07ba-41f5-8b04-091bbbb39047n%40googlegroups.com.
