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Hello - I'm riving away one (or both) of the above tubes. If you're interested, just enter here: http://www.tubeclockdb.com/forum/Notices/36-Official-Contest-Thread.html Brian

I use a simple R/C filter with a .1uF capacitor and 100K resistor, works fine, I've had multiple clocks run for well over a year and still stay exactly in sync.

I can see how you would like building out of discreet components or maybe even an IC or two. Modern microcontrollers have a lot of built in things like A to D converters, comparators, PWM, counters,

Now here's an idea. Take one nixie based frequency counter and couple it with a programmable frequency generator. Drive the generator by a micro such that it generates frequencies in the correct

Yep, that was the wonderful thing, and the curse, of TTL. When they designed it, they made as fast as possible. Faster than anything that was around before it. But that meant that any signal large

I remember a project similar to this one on this list in 2005. I actually built one at the time and still have it running. The link then was http://www.meterclock.com/. I believe it was designed by

Thans, I will have a go at it the next week or so.

Hi: Any experience with these? I'm considering getting a few, to make a 4-digit HH:MM and getting 2 smaller less costly numitrons for SS in a 6-digit clock. Can anyone vouch for their longevity?

Ronald, Its always a pleasure to see what you step into. It looks pretty cool, and isn't a bunch of tubes sicking out of a rectangular box (see my common rant). Will there be a video of it running,

Frederic, The IR receiver has an amplifier inside it that must be responding to electromagnetic radiation generated by the high voltage switching. The proximity of the IR receiver to the nixie tubes

stupid, I forgot the link! www.dos4ever.com/Eug/Eug.html <http://www.dos4ever.com/Eug/Eug.html> Ronald

Hi, I have added the project description of a clock which uses analog meters to display the time. A bit off-topic, and not really anything very original, but a nice small project for a rainy Sunday

I built a TTL LED clock in high school that had little or no filtering. It would occasionally glitch 15 or 20 minutes in a few seconds on power line noise.

If you're going to use the AC line frequency for as the timebase, I recommend an AC wall transformer ONLY. Even with the AC transformer, you're still going to have noise (actually interference)

Hello. I am still enhancing my nixie clock firmware, which now handles 4 and 6 tubes, decimal dots (with many effects) and more. I'll post a link, pictures and videos once I get everything running,

It's not James May :)

<snip> That depends on whether your clock is going to be using the line frequency for timekeeping, and how complicated you want it to be. Using an AC wall wart, it's fairly trivial to extract a line

A.J. For Nixie clock design is it better to use a wall transformer that is unrectified AC or a DC transformer? I am building a clock using 6 B7971 Nixie tubes. I will need 90 mA just to drive the

Thanks for the plug, Terry :) If anyone here wants one in whatever form, you can contact me directly through the list. I've just found out that the A6279 driver chip used in the clock is on last time