Decatron Clock

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7 years 3 days ago - 6 years 9 months ago #5908 by Andrew_R
Decatron Clock was created by Andrew_R
Hello everybody,



I want to introduce my new build Dekatron clock. I know, it is not a real Nixie, but it is a tube clock...
please watch my latest videos:






















Please also visit my site:

www.a-reinert.de/Dekatron_A101/dekatron_a101.html

BR
Andreas
Last edit: 6 years 9 months ago by Andrew_R. Reason: video urls have changed

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7 years 3 days ago - 6 years 9 months ago #5909 by Andrew_R
Replied by Andrew_R on topic Re: Decatron Clock
...and here my latest video, showing the Dekatron clock with my IN-14 clock, to get an idea of its size...

Last edit: 6 years 9 months ago by Andrew_R. Reason: video url changed
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7 years 1 day ago #5911 by stocknic
Replied by stocknic on topic Re: Decatron Clock
Really nice work. Would love to own one of these myself!

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7 years 11 hours ago #5912 by Pacman223
Replied by Pacman223 on topic Re: Decatron Clock
I love that clock. Amazing work. I like how your PCB board turned out...

I have wanted a deckatron tube, but not sure how to make it work...or how to add it to a clock. They have an even more retro feel then nixies

That is a very high end clock...thanks for sharing.
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6 years 11 months ago #5914 by Ty_Eeberfest
Replied by Ty_Eeberfest on topic Re: Decatron Clock
Cool! Very nice work. I really like the look of the engraved brass face plates around the tubes.

Look into it later when the dust is clearing off the crater.
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6 years 11 months ago #5917 by Andrew_R
Replied by Andrew_R on topic Re: Decatron Clock

Pacman223 wrote: They have an even more retro feel then nixies.


Yes, that´s my impression too.

Pacman223 wrote: I have wanted a deckatron tube, but not sure how to make it work...or how to add it to a clock. They have an even more retro feel then nixies.


But that,s very easy (now that I know how to get them working) If you build a circuit as shown on my site:
www.a-reinert.de/Dekatron_A101/dekatron_a101.html
you can connect it to a mikrocontroller (or any other logic device) without any aditional components. EG1 + EG2 is connected to the guide cathodes of the Dekatron and A is a open collector output that can be directly connected to a pin of a microcontroller too.
To make it "move" you have to give a high signal to EG1, then a high signal to EG2, then a low signal to EG1 and then a low signal to EG2. Because the the Dekatron can not follow if the switching speed is to high, you have to wait for al least 0,25 milliseconds after every change of signal on EG1 and EG2. That means:
EG1 = 1, wait 0,25ms, EG2 = 1, EG1 = 0, wait 0,25ms, EG2 = 0.
On my clock, to give it a smooth move from pin to pin, I put a delay of 5ms instead of 0,25ms.

Hope my English is good enough to make this explanation understandable.

Best regards,
Andrew
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