The Siren Board

Discussion of Outdoor Warning Systems
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PostPosted: Thu Jan 31, 2019 11:45 am 
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I'm thinking of building one myself, but haven't found component lists or schematics yet.


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PostPosted: Thu Jan 31, 2019 12:52 pm 
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ThunderMasterMind has a component list, but it lacks a schematic. Basically impossible without a schematic, unless you have a degree in electronic engineering. A good alternative is building one of these, originally designed by Nick Oakman.


https://www.youtube.com/watch?v=p3muRq-s1DU
https://www.youtube.com/watch?v=EWsYprHt8EY

And also, a timer.
https://www.youtube.com/watch?v=cNVYyIlFdJ4

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PostPosted: Sat Feb 09, 2019 3:06 am 
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The first one doesn't sound very much like an EOWS, but the timer video sure has a good sound.


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PostPosted: Sat Feb 09, 2019 1:00 pm 
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Synther wrote: *
ThunderMasterMind has a component list, but it lacks a schematic. Basically impossible without a schematic, unless you have a degree in electronic engineering. A good alternative is building one of
There is one in the EOWS Series manual. It is figure 7-4. There is also an X-ray diagram of the board too! https://www.scribd.com/doc/77830979/EOW ... 612-Manual

There is a problem to building a replica though, given that TI doesn't make some of the ICs anymore, so finding some of them could be hard, but not impossible
Jake_7367 wrote: *
The first one doesn't sound very much like an EOWS, but the timer video sure has a good sound.
It might not, but it incredibly close to being a Whelen-esque controller, and besides, it's still analogue.

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PostPosted: Wed Feb 13, 2019 4:23 pm 
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Which IC's do they not manufacture anymore?

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PostPosted: Wed Feb 13, 2019 8:33 pm 
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Triangle wave generators I think. There might be more.

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PostPosted: Fri Feb 22, 2019 1:47 pm 
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What about generators of other waveforms? Can those be used?


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PostPosted: Fri Feb 22, 2019 3:20 pm 
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If you can make it electrically work with other things, then yes.

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