Portable Tripwire

6,147

43

19

Introduction: Portable Tripwire

About: 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 BBQ.

This Instructable is for you low tech people like me

Update: I recreated the pictures on google sketchup:)

Teacher Notes

Teachers! Did you use this instructable in your classroom?
Add a Teacher Note to share how you incorporated it into your lesson.

Step 1: 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

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

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

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

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

Step 6: 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

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!!!!

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?

Can you see it???

Be the First to Share

    Recommendations

    • Backyard Contest

      Backyard Contest
    • Silly Hats Speed Challenge

      Silly Hats Speed Challenge
    • Finish It Already Speed Challenge

      Finish It Already Speed Challenge

    19 Discussions

    0
    dav-tan
    dav-tan

    10 years ago on Introduction

    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

    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

    0
    BADWOLF1
    BADWOLF1

    Reply 10 years ago on Introduction

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

    0
    Colonel88
    Colonel88

    10 years ago on Introduction

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

    0
    daninja
    daninja

    10 years ago on Introduction

    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.

    0
    grundisimo
    grundisimo

    11 years ago on Step 9

    Look on the right side towards the top.

    0
    UltraMagnus
    UltraMagnus

    11 years ago on Introduction

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

    0
    BADWOLF1
    BADWOLF1

    Reply 11 years ago on Introduction

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

    0
    N1CK4ND0
    N1CK4ND0

    11 years ago on Introduction

    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.

    0
    Volgon
    Volgon

    11 years ago on Step 8

    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.

    0
    nachosyumm
    nachosyumm

    11 years ago on Introduction

    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.

    0
    hg341
    hg341

    11 years ago on Introduction

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

    0
    inventivefiend
    inventivefiend

    11 years ago on Step 1

    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.

    0
    BADWOLF1
    BADWOLF1

    Reply 11 years ago on Introduction

    Thanks for the advice I will change it