Tiny universal clock PCB

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5 years 7 months ago #5416 by mjsangster
Nisei,

Not sure, but you can email me at:

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- Michael Sangster
Cold War Creations

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5 years 7 months ago - 5 years 7 months ago #5426 by Pacman223
I think I like that idea, of a tiny universal clock ... can you describe its features? You mentioned 3x2 multiplexing, could you do a direct drive? (I would guess it would be bigger and more expensive).

I like the idea of having everything on one small board! How would you attach wires to the tube sockets? i.e. just a hole in the board? Maybe some sort of speaker wire screw post?
Last Edit: 5 years 7 months ago by Pacman223.

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5 years 7 months ago - 5 years 7 months ago #5427 by Nisei
It's all been described in the previous posts.
If you want a board with screw posts you'd better buy the pvelectronics remote tube kit . We're talking as small as possible here :)
Last Edit: 5 years 7 months ago by Nisei.

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5 years 7 months ago - 5 years 7 months ago #5428 by Pacman223
:) building a clock from the pv electronics kit now... its so far looks very good, I now need to wire the sockets, soon will be able to turn it on and test it..

The thoughts of having a smaller board, that would fit into a smaller box, sounds like a good idea. Might make more options for a clock case possible.

The thoughts of a temp display sounds really good:)
Last Edit: 5 years 7 months ago by Pacman223.

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5 years 6 months ago #5498 by mjsangster
I'm 80% complete with the board design:
- size 2.5" x 2" x .25" (inches)
- requires 200 -300 mA at 9 - 15 V, 3 pin Molex connector
- 180V at 10 mA generated on the board
- 3x2 multiplexing (2 on at once)
- supports 2 colon sets

Now I'm wondering what I should have for I/O, possible items:
- 2 time/date/option switch inputs
- alarm enable switch
- GPS input
- alarm output (open collector transistor)
- temperature sensor (could be 9700 sensor, cheap and easy to interface)
- ambient light sensor, either on board or off
- any other items?

What kind of connector? Inline 10 pin .100" connector?

- Michael Sangster
Cold War Creations

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5 years 6 months ago #5499 by Pacman223
I would vote for temperate, light sensor myself.. if possible humidity sensor

If have seen a few nixie thermometers with humidity, and think that sounds very cool for a clock

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