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.

On 17/06/2024 16:30, Adrian Godwin wrote:
But you can use dekatrons for the division, right ?


On Mon, Jun 17, 2024 at 4:29 PM Nicholas Stock <nickst...@gmail.com> wrote:

    A small desk clock then...

    LOL.



    On Mon, Jun 17, 2024 at 8:24 AM 'Grahame Marsh' via neonixie-l
    <neonixie-l@googlegroups.com> wrote:

        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.

        On 17/06/2024 15:28, J Forbes wrote:
        neat!

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

        On Monday, June 17, 2024 at 1:59:39 AM UTC-7 Grahame Marsh 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.

            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

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