Introduction: Portable Tripwire

Picture of Portable Tripwire

This Instructable is for you low tech people like me

Update: I recreated the pictures on google sketchup:)

Step 1: Parts

Picture of Parts

The Parts:
1 altoids tin
1 switch of some sort
1 "d" battery with holder (radioshack)
1 buzzer
half a popcicle stick
aluminum foil\
clear fish wire
match stick or any non metal thin stick

Step 2: Cutting

Picture of Cutting

Cut a rectangle big enough for the D battery holder and two smaller one on the side for the buzzer and the switch.

Step 3: Wireing

Picture of Wireing

Connect the buzzer to the switch and connect that to the battery holder Do not connect the wires from the buzzer to the battery holder

If your good with a solder then I recommend that

Step 4: Add Together

Picture of Add Together

place the switch, the battery holder and the buzzerinto the altiods tin.

Have the two remaining wires stick out. see pic.

Step 5: Buzzer Base

Picture of Buzzer Base

tape one wire to the side of the altiods tin and tape the foil on top. see pic.

Step 6: Tripwire Activator

Picture of Tripwire Activator

tape other wire to popcicle stick and tape the foil to it( the wire must touch the foil)

Step 7: Tape All Together

Picture of Tape All Together

tape the popcicle stick to the tin till its hard to pull up
Or wrap a rubber band around the device and the popsicle stick

Step 8: Your Done!!!!

Picture of Your Done!!!!

your finished with your E-Z tripwire, just tape a matchstick to sum fishing line and tape the other end to the wall. put som tacky on the bottum of your tripwire to have it stick to walls.

Step 9: Can You See It?

Picture of Can You See It?

Can you see it???


spazoid86 (author)2010-06-22

looks like a crack pipe

MFPOSGBCS (author)2010-06-18

looks good but wat about a mini altoids can

dav-tan (author)2010-05-19

why not a AA battery? wouldn't that involve cutting the tin less? if you could get away with the only holes in it being for the tripwire and vents for the sound to escape you could hide it in plain view and no one would assume it was a tripwire :D

pyra_builder_1337 (author)2009-09-17

i can see it but it isnt clarly visible ... the buzzer would be more useful in a remote local, say your room as to not alert the other person you are on to them

yeah you could do that but this is a portable trip wire unless you could make a wire less buzzer

Colonel88 (author)2009-08-10

laser tripwire is more advanced and better

Colonel88 (author)2009-08-10

ehhhhhh... looks badly done, could use soldering instead of tape.

daninja (author)2009-07-08

i think the dangerous book for boys idea was better. It was more simple. like you know covering the ends of a clothespin with foil. or the pressure pad that was in there.

pogoman12345 (author)2009-06-19

its a cat!!!!!!!!!!!!!

grundisimo (author)2009-05-02

Look on the right side towards the top.

UltraMagnus (author)2009-04-15

if you added a DPDT relay wired so that once activated it stayed on, the buzzer would keep buzzing once tripped

BADWOLF1 (author)UltraMagnus2009-04-15

I have no idea what a DPDT wire is but the buzzer keeps buzzing once tripped

N1CK4ND0 (author)2009-04-14

pretty sick, i like how its in an altoids can too, haha. and to the people saying they could see it: it is because it is a direct picture of it, if you were on the other side of the door, walking to go get yourself a poptart, i dont think you would see that.

Volgon (author)2009-04-14

Nice, but you should be more clear on how to set it up. I think that the matchstick goes between the two pieces of foil, but you should explain.

budsiskos (author)2009-04-14

i can see it

nachosyumm (author)2009-04-14

yeah, i get it now, but its a bit hard to understand. Did you try using maybe a rubber band instead of tape? For a heavier duty simple switch like this you can also try using one of those clips for hanging up clothing.

hg341 (author)2009-04-14

well that was very nice and i can see you trip wire about 2ish feet up

inventivefiend (author)2009-04-14

Looks like an interesting device, but I'm very unclear about how the trip switch is assembled, how it functions, where it makes contact, etc. Better photos are a must. Also I think you mean Popsicle stick, not toothpick.

BADWOLF1 (author)inventivefiend2009-04-14

Thanks for the advice I will change it

About This Instructable




Bio: I play a lot of minecraft and like to work with LED's and some circuitry, but most of all I love to cook and ...
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