At a time when theft and violence are on the rise, we need to take safety precautions. An inexpensive alarm system that girls can carry in their purse may be a good idea. of course if they allow you to mod their purse! This tutorial is from the MAKE Magazine. Lets start working.
What you Need.
1 | 120 db Siren |
2 | A small switch |
3 | 9volt battery |
4 | Wire |
5 | Heat shrink tubing |
6 | Some clothing material ( a piece of tough cloth is fine) |
7 | Your purse! |
How it is done.
Watch the Video: http://www.youtube.com/v/FhxWWBymLBY&hl=en&fs=1&rel=0&color1=0x3a3a3a&color2=0x999999
OR follow the instructions below.
1 | The siren has two wires. Connect the red wire to the switch. |
2 | Connect the other siren wire to the negative pole of battery (usually marked with a “-“ sign). |
3 | Connect the other pin( or wire) of the switch to the positive (+) pole of the battery. |
4 | If you don’t want to use heat shrink tubing you can use normal insulation tape to insulate the exposed wire. |
5 | Use the clothing to make a small bag (cover) large enough to fit the battery. Put in the battery and sew the opening. |
6 | Cut a small hole at the bottom of the purse (So the alarm can be heard). |
7 | disguise the hole by patching the hole with some gauge material. |
8 | Put the siren at the bottom of the purse, near the hole and use some adhesives to attach it. |
9 | Attach the switch at the top of the purse. |
Done!
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