New scope clock

[Grahame Marsh]

Hi All

Here's a scope clock that Nick Stock and I are just finishing off. It
was inspired by a AEG Paper from 1967 that Martin (Dekatron42) sent to me.

Two case designs, a common horizontal case and a vertical case like a
Simpsons MirroScope.

Details are here:

http://www.sgitheach.org.uk/scope4.html

Open Design - all Eagle, Gerbers, STL and DXF files available on my
Public Dropbox.

No source code as there is no microcontroller!

Enjoy Grahame

[J Forbes]

neat!

(and if you can do it with TTL, you should be able to do it with vacuum tubes)

[Grahame Marsh]

Then you'll not be surprised by what I have sketched in a notebook ;^)

My next challenge is a circle graphics clock without using a microcontroller.

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[Nicholas Stock]

A small desk clock then...

LOL.

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[Adrian Godwin]

But you can use dekatrons for the division, right ?

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[Grahame Marsh]

Just about. You hit the frequency limit for common (like GC10B) neon dekatrons when trying to get a flicker free refresh for the image. Trying to avoid the high speed dekatrons. The clock time keeping is easy enough with dekatrons.

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[Dekatron42]

I really like how it came out, both the landscape version and the portrait one!

Elesta EZ10A or B should be usable, they are quite easy to drive at high speeds, and even the small Russian A-107, 8 & 9 or even 110 should work. :)

/Martin

[daddyv...@gmail.com]

Very nice! Thanks for sharing this. Another possible project for my bench.

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[Toby Thain]

Excellent! Thanks for posting. This is definitely relevant to my
interests in analog character generation... Maybe one day I will have
more to show than this:

https://github.com/qu1j0t3/vector_gen

Thanks again
--Toby

[Toby Thain]

On 2024-06-17 4:59 a.m., 'Grahame Marsh' via neonixie-l wrote:

> Hi All
>
> Here's a scope clock that Nick Stock and I are just finishing off. It
> was inspired by a AEG Paper from 1967 that Martin (Dekatron42) sent to me.
>

Hi,

Is that paper online?

Thanks again

[Dekatron42]

Grahame put it here, where he also put the Trochotron books I referred to in another thread here at the forum, I just didn't find it when I was looking for it the other day: https://groups.google.com/g/neonixie-l/c/QKthffs5u5w/m/eMhlS4O2AQAJ

/Martin

[n1ist]

I have started to collect parts for this clock.  The best deal I have found on 3ASP1 tubes (turns out they are Siemens ones) is from BTB-Electronik, https://btb-elektronik.de/ for 40 euro.  Now to find or kludge the unobtanium side contact

/mike

[Grahame Marsh]

Hi

Jan has D9-10 CRTs available and also a slightly smaller D8-11. Both should work with my hardware (I have a couple coming to test). The D9-10 CRT is used in the original AEG paper and has no side connector.

https://www.die-wuestens.de/eindex.htm

email Jan for information

I (and others) have been looking for that side connector for ages! I have one 3ASP1 coming (again to test) and hope to 3D print something using a flexi filament and Be-Cu fingers for the contacts. A croc clip works great for testing but I want something that looks right as well.

Grahame

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