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120 Decible Emiting Device

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120 Decible Emiting Device

Unread postAuthor: elitesniper » Fri Mar 14, 2008 10:38 pm

Hello fellow spudders, just wanted to post some pics of my weekend project other then spudding :) This is a device put together from things available at your local electronics store, this thing is just for some sense of security when your in public, with one flick of a switch it produces ear piercing 120 decibel sirens. The lump in the front is the piezo siren it is powered by a 9v battery wired inside, to change i just unscrew the four screw and replace the 9v in its clip, this thing is very rugged and will last many years :D, enjoy guys. oh and the warning sign I just printed off this website that you can make your own warning labels, an i taped it on
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decible!!1.JPG
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its pretty small, well lets say its a good fit in your pocket:)
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Unread postAuthor: BigGrib » Fri Mar 14, 2008 10:49 pm

Cool is the speaker omni directional or uni directional
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Yea, that's definitely going to get you at least a tazer.

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Unread postAuthor: elitesniper » Fri Mar 14, 2008 10:59 pm

well its kinda between, but its mostly omnidirectinal so it doesnt damage your ear :)
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Unread postAuthor: TurboSuper » Sat Mar 15, 2008 8:47 am

Heh, nifty.

I personally hate loud noises, but if I didn't, I'd build one of those :D

Mabye you should use a 556 to give it a two tone warble too, hehe.
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Unread postAuthor: potatoflinger » Sat Mar 15, 2008 9:07 am

Hey, those are pretty useful, especially for pissing off the neighbor's dog :lol: I made something similar to this, except it had a timer on it so that it would go off for five seconds every three minutes, I used it to scare the birds out of our cherry trees.
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It's hard to soar with eagles when you're working with turkeys.
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Unread postAuthor: bigbob12345 » Sat Mar 15, 2008 9:10 am

TurboSuper wrote:I personally hate loud noises


then do you dread firing your launchers :D

Elitesniper: Looks great.
that wouldnt annoy your neighbors at all

Edit: potatoflinger beat me to the neighbor thing, sort of
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Unread postAuthor: elitesniper » Sat Mar 15, 2008 10:21 am

thanks big bob, and turbo, hey potatoflinger can you explain to me how you did the timer thing? is it a relay switch or something? i might put it in mine so it can have a little delay so that i can get away from it :D
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Unread postAuthor: TurboSuper » Sat Mar 15, 2008 11:56 am

bigbob12345 wrote:
TurboSuper wrote:I personally hate loud noises


Edit: potatoflinger beat me to the neighbor thing, sort of


Heh, I figured I'd get that sort of question :D

Frankly, no, I don't. A launcher is a low-tone kapow! for a split-second, not a high-frequency shrill. I don't mind loud music either, it's just stuff like power tools and alarms that bother me.

As for the timer, I'm going to go off on a limb here and say you should use a monostable 555. A quick search on Google will tell all tales. I'm not sure of their accuracy with long time delays, though.

Edit: Actually, I think it would be a fancy 555 astable circuit for that kind of thing...
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Last edited by TurboSuper on Sat Mar 15, 2008 12:02 pm, edited 2 times in total.
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Unread postAuthor: elitesniper » Sat Mar 15, 2008 12:00 pm

ah thanks, not all launchers are low toned kapows, hehe, Big Blue is a gigantic BOOOM!. :)
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Unread postAuthor: psycix » Mon Mar 17, 2008 5:59 am

Awesome!
How does it exactly work?
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