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Creating a Vetinari Clock Using Antique Analog Meters

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Max The Magnificent
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Re: Sorry to have missed it
Max The Magnificent   8/21/2014 4:29:38 PM
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@Antedeluvian: Looks like Dayton is about 7 hrs from Toronto. Maybe you should organize an EELive Get-Together. Good museum (National Museum of USAF) as well, or so I'm told.

Maybe we should at that ... let me think about it...

Max The Magnificent
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Re: Very nice!
Max The Magnificent   8/21/2014 4:28:46 PM
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@Duane: Or, maybe something with Neopixels.

I wouldn't dream of doing a project without them -- I have a perfectly sized-shaped vacuum tube to sit on the top of thsi clock with NeoPixels underneath it...

Max The Magnificent
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Re: Magic Eye Tube?
Max The Magnificent   8/21/2014 4:27:05 PM
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@mhrackin: Is that your "secret ingredient" to go up top center?

Actually, I have something else in mind, but I might have to add one of these also...

Max The Magnificent
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Re: What no Sun Dial
Max The Magnificent   8/21/2014 4:25:46 PM
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@Crusty: ...I think this might just end up on my whacky to do list...

Hi Crusty -- this is actually a really nice little project -- simple in some respects, not-so-simple in others, and the final result can look really fantastic if you do the case right.

Max The Magnificent
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Re: Timeofdayometer
Max The Magnificent   8/21/2014 4:23:46 PM
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@HeyJoe0: Another issue was that, although I used a 32.768KHz xtal timebase, my time would drift.

I'm planning on using a real-time clock module in mine -- that makes life much easier :-)

Max The Magnificent
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Re: Timeofdayometer
Max The Magnificent   8/21/2014 4:22:27 PM
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@HeyJoe: I built an analog timeofdayometer...

I like your siolution of displaying hours 1-6 and then 7-12 with minutes inbetween.

Another solution might be to have a "rest" position on the left and then hours 1-12 and minutes 1-60 shown as concentric scales. The needle could start off in the "rest" position -- then move to indicate the hour -- then move to indicate the minute -- then return to the rest position...

 

Max The Magnificent
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Re: Timeofdayometer
Max The Magnificent   8/21/2014 4:19:14 PM
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@HeyJoe: ...On my next iteration Im going to use a linear scale and apply a nonlinear correction factor on my output value.

That's something I might be doing -- alternatively, for some ptojects I might want a non-linear scale that doesn;t match the non-linerarity of the meter. In thsi case I might use a look-up table approach and then interpolate between table values.

Max The Magnificent
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Re: Vetinari clock
Max The Magnificent   8/21/2014 4:14:51 PM
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@David: ...but I must have skimmed a bit tooo much over that bit...

But that was the best bit!

I don't know, I sit here working my fingers to the bone pounding away on a hot keyboard, and you "skim over that bit" (mutter, mutter, moan, groan) LOL

David Ashton
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Re: Vetinari clock
David Ashton   8/21/2014 4:08:04 PM
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@Max...I must have read the second page, 'cos I remember the drawings, but I must have skimmed a bit tooo much over that bit.  Sorry....

mhrackin
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Re: Sorry to have missed it
mhrackin   8/21/2014 3:22:25 PM
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I'll be retired by then and would definitely be up for a road trip.  My friend and former boss Joe used to go every year, and maybe still does.

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