Introduction: Trip Alarm

Picture of Trip Alarm


This is an easy to make trip-alarm that I designed.

Anyone can make this trip-alarm as this is very cheap.

Step 1: Materials Needed

The Materials needed are

  • 9 volts battery with clip
  • 1 Buzzer
  • 2 strips of aluminium foil
  • 1 small box
  • 1 plastic clip (used to dry cloths)
  • craft stick ( with hole in it)
  • Fishing wire(Fishing wire or any other transparent wires are recommended as they are less visible).
  • 1 cardboard piece(5 cm * 5 cm)

Step 2:

Picture of

Step 3: Base

Picture of Base

Take the 9 volt battery with clip and stick it inside the box using double sided tape

Step 4: Connecting Buzzer to Battery

Picture of Connecting Buzzer to Battery

Take the buzzer and join the negative end (black wire) of battery clip to

negative end of buzzer (black wire) using tape. Stick the buzzer outside
the box.

Step 5:

Picture of

wrap the ends of the plastic clips with aluminium foil.

Step 6:

Picture of

Stick the one end of aluminium foil to positive end (red wire) of
battery clip and the other end of aluminium foil to positive end
(red colour) of buzzer using tape or by soldering. Keep the
insulator in between the ends of plastic clip.

Step 7:

Picture of

Make a medium sized hole at the side of the box.
Put the long wire trough the hole of the insulator
and put a knot(I did not have a fishing wire).

Step 8:

Picture of

The other end of the long wire should be attached
to the small piece of cardboard(5 cm*5 cm).

Step 9: Final Step

Picture of Final Step

Now using double sided tape, stick the box and the cardboard between a door.


ajmal hassan (author)2014-01-13

ok thanks

pcmodder1997 (author)2014-01-02

Instead of using wire for the trip wire u should use fishing line as it is less visible

About This Instructable




More by ajmal hassan:16 Unusual uses for saltCreating Depth of Field Using PhotoshopHot Crayon Gun
Add instructable to: