A quick and dirty and dangerous sound activated flash to catch moments in time

Step 1: The First Thing You'll Need Is an Amplified Computer Speaker

The sacrificial victim here is a pair of harmon kardons from a garage sale $1
That makes for really cool photos, have you seen the smash bat, it works on the same type of thing only instead of sound it uses a touch sensor in a bat so they can capture pictures as they bust the crap out of melons and other fun things
that is really clever, nice job
So, let me get this straight. You cut off the sound input and speaker wires from the op-amp, switch them around so the op-amp is amplifying the signal it gets from the speaker (acting as a microphone), and you wire up the amplified output of the op-amp to the SCR to switch the flash? That sounds totally doable- could you just use a microphone and an op-amp or are you using other bits of the computer speakers as well?
That sounds about right (remember it's been two year), and yes you could probably rig a opamp the same way, I just had these handy.
Ok im really sry i cant figure this out. Im only 15 but i want to learn how to do this stuff. Here are some pictures i took of the altec lansing speaker i tore apart. could you tell me where to put some of the connections. Im not really sure what to do.
That's alright, gimme a couple days, I have the flu right now and I haven't looked at this project in two years ;-) My brain is running slow... Do you have a multimeter? If not and you have a harbor freight nearby they are only $3.
Hey i got another question are we supposed to cut the wires comming from the black think. Here is the data sheet for it <a rel="nofollow" href="http://www.datasheetcatalog.com/datasheets_pdf/T/D/A/7/TDA7350A.shtml">http://www.datasheetcatalog.com/datasheets_pdf/T/D/A/7/TDA7350A.shtml</a><br/>thanks so much for all of your help<br/>
No, don't cut the leads, just add the jumper wire.
sry im a noob at this and i dont know how to find the chip number to download the data sheet. plz help thanks
We all were once ;-) On top of the circuit board the chip is black rectangle with 6 or 8 legs, the number is printed on the chip, you might need a magnifying glass to read it. If there is no number, it means it's a cheap chinese rip off.
so how many times did you accidentally set it off?
Why does this produce an EMP?
I think that was more of a public service announcement than anything else.
Might I suggest <a rel="nofollow" href="http://www.datasheetcatalog.com/">http://www.datasheetcatalog.com/</a> There are lots of datasheets there which mouser might not have.<br/>
lol is that a failed egg i see? great work buddie i just finished mine works flawlessly mus put up some pics and i express my utmost condolences for your digi camera TIMm
One of MANY failed eggs. I'd like to see some of your pix when you have the chance
evry thing electric makes electric emp its just not strong i dono why this makes a strong emp cause nomally it takes a nuke or a power transformer to have strong enogh emp to mess up any thing
This is great. I'm definetly going to have to do this. I'm glad you took it to a new level.
Love the picture of the egg - good work
glad to see you got this working... sorry to hear it killed your digicam :/

About This Instructable




Bio: Working my dream job in the Telecom industry, so chances are, i'll never have time to respond to comments or messages, nothing personal.
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