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Nixie Clock!

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thedatastream
Fri Jun 12 2009, 08:03AM Print
thedatastream Registered Member #505 Joined: Sun Nov 19 2006, 06:42PM
Location: Yorkshire!
Posts: 329
My quest to complete all my old, half started projects before starting any new ones is one step more complete. I've finally dusted off some old nixie tubes to make a clock using Mike Harrison's circuit design. I used an old set top box chassis from work for the casing. Buttons in the recess on the front are for "fast set" and "slow set".

Not the neatest inside but quite functional :) Details will be posted to my website soon.

Remaining projects: mend drill battery charger, fix o-scope, get SISGTC working, maybe even get DRSSTC working too.

Regards all,
James

~~~~~~~~~~~~~~~~~

Nix Clk Unit Front Small

Nix Clk Unit Rear Small

Nix Clk Inside Overview Small

Nix Clk Driver Board Underside Small

Nix Clk Valve Board Underside Small

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Fraggle
Fri Jun 12 2009, 10:53AM
Fraggle Registered Member #1526 Joined: Mon Jun 09 2008, 12:56AM
Location: UK
Posts: 216
That`s nice :o) I can`t tell - does it use standard logic or is there a single `clock` chip?

edit: Yes there is a circuit diagram link in the post, sorry :D
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tobias
Fri Jun 12 2009, 04:20PM
tobias Registered Member #1956 Joined: Wed Feb 04 2009, 01:22PM
Location: Jersey City
Posts: 172
Very nice job!

I want to build some of those to put on my new living room.. but I was trying to get a few of 74141 and do it 'pic based'.

I want to do a 6 digit clock and using a lot of transistors made me think if it worth doing...

How accurate is the clock timing?

Again.. congratulations for the nice job!
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thedatastream
Fri Jun 12 2009, 07:47PM
thedatastream Registered Member #505 Joined: Sun Nov 19 2006, 06:42PM
Location: Yorkshire!
Posts: 329
Thanks for the comments :)

Details now up on my website : Link2

Clock will be as accurate as the 50Hz mains which is good accuracy long term despite short term fluctuations.

Why not multiplex using MPSA42 and high voltage PNP transistors? Easy if you have a PIC...
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Dennis Rogers
Sat Jun 13 2009, 03:14PM
Dennis Rogers Registered Member #1837 Joined: Tue Dec 02 2008, 02:20PM
Location: NYC
Posts: 65
Man you stole my thunder! I'm just completing mine now. I have a 6 digit Attiny powered clock. It's the nuts and volts kit. I want to get some pics and put up a thread too. All I had to do was assemble/solder mine, you had to figure everything out so hats off to you.

Mine is working great. It has a crystal oscillator so drift is not a problem. My only issue is ghosting between the 5 and 7 digits on my seconds tube. I believe the fix is increasing the value of the driver board resistors. I'm not sure if it is even worth it though. Nice.
Dennis
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