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GSKrasle
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Yes, you could probably sell this....
GSKrasle   8/25/2014 11:50:35 AM
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It would be perfectly reasonable to sell these, or kits, or partial kits. You could even sell the design/code, either to DIYers or to somebody like 'Spirit of St. Louis' (Look them up: linkage is disableized here). I have several of their things, and they're cool, except a little flimsy (the paper scale on the pop-up dial for the alarm-clock peels, and the bank of mechanically-linked switches [and the antenna] is broken on the CD Boom Box). But the 'Field Telephone' is the only reason I still have a land-line.

mhrackin
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Re: tick-tock sound
mhrackin   8/25/2014 11:47:57 AM
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Well, if you're going to use an audio format (mp3 etc) you could STILL use the box.  Just use something like a tack hammer and record the sound.  I suspect some of the other (eerie) effects can be found on the internet in appropriate formats.  Some folks use these for ring tones!

Max The Magnificent
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Re: tick-tock sound
Max The Magnificent   8/25/2014 10:15:21 AM
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@Tloose: Use a solenoid to strike the inside of the wooden box to make an authentic sound...

That's not a bad idea -- but I also want to have other sounds, like on the hour the sound of (rusty) clockwork graunching and straining and then letting loose with a release sound as the hour meter flips over to the next hour...

Tloose
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tick-tock sound
Tloose   8/25/2014 9:42:54 AM
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Use a solenoid to strike the inside of the wooden box to make an authentic sound...

Max The Magnificent
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Re: This is going to be awesome.
Max The Magnificent   8/24/2014 12:39:15 PM
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@Hamster: You could almost sell these :-)

Unfortunately, I only ever make one of anything, then I get attracted to the next "shiny thing" LOL

PS Did you see the email I sent you?

Max The Magnificent
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Re: This is going to be awesome.
Max The Magnificent   8/24/2014 12:37:48 PM
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@Hamster: Maybe make the seconds tick inconsistently, but have it bang-on when the seconds hand goes from full scale back to zero.

Sometimes it's almost like you are reading my mind -- in fact I'm planning on writing a follow-up column about possible operating modes and associated sound effects.

Max The Magnificent
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Re: This is going to be awesome.
Max The Magnificent   8/24/2014 12:36:09 PM
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@Hamster: Max, this is going to be an awesome project - one where I think everybody will get the juxtaposition of old and new tech.

Well, of course it's an awesome project -- you suggested it LOL

 

Max The Magnificent
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Re: Driving the Meters
Max The Magnificent   8/24/2014 12:34:46 PM
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@Clarke: ...Do you have the voltage and current specs for each?  I imagine they'll require more power than a microcontroller output could provide...

That's one of the problems in that you usually can't find any documentation for the meters. Also you often end up modifying them by removing shunt or series resistors. Also you have to be careful measuring the internal resistance -- in some cases you can "blow up" the meter using (trying to use) a multimeter to determine the resistance.

In some cases like a meter that's geared to to measuring say 10mA max, you could drive this directly from the MCU output -- but you also have to remember that the meter itself can generate negative voltages due to reverse/back EMF. Personally, I prefer to use the MCU output to drive a transistorm and have the transistor drive the meter -- all of this will be covered in my forthcoming blog.

Max The Magnificent
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Re: Driving the Meters
Max The Magnificent   8/24/2014 12:29:40 PM
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@Clarke: ...I'm curious how you're planning to drive these meters...

I'll be using the MCU's PWM outputs -- Ill be writing a blog about this in the next week or two (as soon as I get some time LOL)

Max The Magnificent
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Re: Vintage Time Delay Relay
Max The Magnificent   8/24/2014 12:28:01 PM
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@larussell: How about doing the whole thing analog?

Do I look like the sort of man who would soil his hands with analog when digital is so much more "shiny" and "tasty"?

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