i've come up with a project that i've been contemplating for a long time. It's a flash grenade made from a disposable camera circuit and a part of a pringles can.

You need:
MATERIALS:
-one safety switch, toggle or otherwise, with on/off (for convinience)
-a pringles can (can be one of the snack size or larger type, i cut down a larger type one)
-a camera flash circuit
-various bits of wire, in total not even a foot, but it's good to have extra.
-a motion/impact switch (i jerry rigged one up out of a grommet, a wire nail, and a bit of wire and solder)
-AA battery holder case thing

TOOLS:
solder
soldering iron or pencil
knife or scissors
pliers (or your hands, doesn't really matter)
duct tape
 
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Step 1: Remove circuit, attach safety

rst extract the circuit and short the capacitor by touching the two wires with a screwdriver or a bit of wire. remove the battery and short it again to be sure. This is a relatively simple process, as all it requires is the addition of a safety switch and the motion/impact switch.
Once you have your circuit discharged, you can begin work.
First switch is the safety switch.

Take your toggle switch and one end of the battery holder, preferrably the forked end (+ end) and solder one contact of the switch onto it by a bit of wire. then, attach the other contact to your battery ( i don't know how smart or dumb this was, as i soldered it in place.) The battery didn't do anything to me, it didn't explode, but in hindsight, i assume this was an unsafe decision. Attach the battery to the wire with elecrical tape or solder a proper battery holder to the original contacts. This creates a safety switch which allows you to cut off power to the grenade so it doesn't accidentally charge and go off, as these circuits are finnicky.
Now take your knife and cut out a hole in the side of your container to fit the switch out the side.
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Home made spy gear says: Nov 29, 2012. 2:20 PM
Yah please make a video
Aron313 says: Feb 29, 2012. 6:04 PM
Make a video! I want to see what it does before i go through the trouble of making it.
sanagol says: Oct 22, 2011. 3:13 PM
look at mine but its made out of a flatend toilet paper role
revolver 042.jpg
dudemanclc says: Apr 15, 2011. 9:21 PM
My friend made a sound grenade out of a window alarm. its made it get your attention so its a great distraction device for airsoft.
Tetranitrate says: Jul 5, 2006. 2:37 AM
You could turn the thing into a real flash grenade by filling the can with flash powder afterwords. Youd only have to be sure that the aluminum in the flash powder dosent short circuit the capacitor because that would be very very bad... (Note: noone should try this I was kinda just kidding)
Hitman227 in reply to TetranitrateNov 2, 2010. 4:18 AM
So youd want a little can full of flashpowder a circit board a short circited capacitor
and various metal fragments going off 2 feet from you? I recomend a flack vest
and a lexan swat riotshild. the whole idea of a flash bang is to incapasitate
you not kill you. DO NOT TRY THIS!
Pyromaster951 in reply to TetranitrateAug 5, 2007. 9:55 AM
it works. the third time i used it the wrap it came off and it turned into a gernade. it blew up and shrapnel went every where. worse yet the cops came and got mad cuz they said i wuz makin gernades which i wuznt really( sorta kinda.........yes)
Thundertydus in reply to Pyromaster951Apr 22, 2009. 5:15 PM
For Christ Sakes
check spelling.jpg
SFXguy in reply to ThundertydusJul 7, 2011. 5:18 AM
lol
Pie Ninja in reply to ThundertydusOct 14, 2009. 10:03 PM
Sorry to point this out but, "For christ sakes" is not exactlya shining example of proper spelling/grammar either.
dudemanclc in reply to Pie NinjaApr 8, 2011. 10:55 PM
thats pretty ironic
Pie Ninja in reply to dudemanclcApr 9, 2011. 3:59 AM
Yes, it is! :D
MadBricoleur in reply to ThundertydusJun 3, 2009. 10:06 PM
well, sorry to point this out :P but
ibleretort.bmp
Thundertydus in reply to MadBricoleurJun 9, 2009. 7:39 PM
Damn, My "Post Images" Are broken
Thundertydus in reply to MadBricoleurJun 9, 2009. 7:38 PM
Sorry to point this out;
Pyromaster951 in reply to TetranitrateAug 5, 2007. 9:47 AM
good idea. just put cling wrap ( damn stuff, keeps sticking together when u dont want it 2) aroind it. :)
PYROFREAK in reply to TetranitrateJun 5, 2007. 8:36 AM
if you electric taped up all wires and housed the capasitator in a waterproof case eg: a camers pot? it would be safe to keep near flash powder but yea if any shorts ocured it would blast your arm of whitch would not be funy
GES1985 in reply to PYROFREAKJul 4, 2007. 2:23 PM
contact smokebombs would be nice... i have an idea for them, but i dont know if it would work.... try this http.. my idea is posted there

http://www.instructables.com/forum/TVKT06KF2H0OXI6/#CUOBPEEF3KRXIQU
mdgnys says: Aug 6, 2009. 10:33 AM
I want to make an infra-red flash grenade for lazer tag that will copy your gun signal and send it out all over
account3r2 in reply to mdgnysOct 16, 2010. 3:07 PM
or use a learning ir remote and program it and hold the button down and run around pointing at everyone
airsoftbeast40 in reply to mdgnysNov 21, 2009. 9:13 PM
thats a really good idea if you make it post an instructable and tell me
codongolev in reply to mdgnysOct 18, 2009. 12:47 PM
 I was thinking about bringing a prism to laser tag.... just sitting it on the ground and shooting it.
mdgnys in reply to codongolevOct 18, 2009. 1:58 PM
Soundl like a great idea or put gum on a metal reflector and stick it to the ceiling haha!
codongolev in reply to mdgnysOct 19, 2009. 5:06 PM
put an extremely elaborate series of mirrors everywhere so that you can snipe the guy shooting from the other little balcony by shooting at just the right angle. 
Colonel88 in reply to codongolevOct 25, 2009. 8:13 AM
Or put an elaborate series of mirrors, then one dude runs out, baits in another person, and then you go ahead and shoot at the mirrors and it richochets everywhere and kills him!
codongolev in reply to Colonel88Oct 29, 2009. 5:52 PM
 you just figure out how to sneak in tons of mirror paint (if that even exists) and paint everything. then just shoot somewhere and it'll hit him.
codongolev in reply to codongolevNov 2, 2010. 5:59 PM
it does exist. I actually looked it up for something completely unrelated and now I'm back here looking at this.
Hitman227 in reply to codongolevNov 2, 2010. 4:10 AM
Crome spray paint!
Colonel88 in reply to codongolevNov 4, 2009. 12:55 PM
I like where this is going.
ImJustCurious in reply to Colonel88Aug 24, 2011. 9:10 AM
Use Aluminium foil, its removable......
Pie Ninja in reply to mdgnysOct 14, 2009. 9:56 PM
Good luck with that, they'll probably ban you from laser tag though.
mdgnys in reply to Pie NinjaOct 15, 2009. 7:48 AM
It would be really cool though and it was just an idea.
account3r2 says: Oct 16, 2010. 3:03 PM
haha i got an idea you could use a timer of some sort then a switch then a couple of flash circuits so you could push the button then throw it.
Articas says: Jul 16, 2010. 7:37 PM
You could ad some sort of reflector (like a big one not the piddly little one from thr camera) around the bulb and mount it in a pipe to make a flash stick type thing. Sorta like the mind wiper thing from men in black
what.the.ph0 says: Apr 4, 2006. 1:49 AM
I love the idea but I dont understand some of your instruction could you be more clear like diagram wise point you arrows please
abbabibble2 (author) in reply to what.the.ph0Apr 4, 2006. 8:02 AM
yeh. I can do that... it's kind of hard when paint doesn't seem to be working. I'll do that as soon as i can.
yoyohead415 in reply to abbabibble2Dec 7, 2009. 8:31 PM
holy CRAP!!!!!!! that look hard to make and powerful flash it can probablly make a person go blind but still it is plane old BEASTINES!!!!!!!!!! or at least thats what it looks like
Colonel88 says: Nov 4, 2009. 12:57 PM
IMMA CHARGIN MAH LAZOR!





(This is unodirectional, so if it faces the wrong way, people wont see it. SO it's like a 1/6 chance of landing right if it is a square box.)
cdousley says: Sep 5, 2009. 3:58 PM
they make fire works that do that cool project
bradleyj94 says: Aug 12, 2009. 8:48 AM
make it as a booby trap, instead of the nail and wire wrap tin foil around the parts of a washing line peg, then attach the wires to the pieces of tinfoil. then insert the trip wire(ensure it doesnt conduct electricity). when the wire is tripped it sets off the flash.
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