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invention

Burglar Buzzer

by elaine_littleBits

Published on August 2, 2016

Invent your own Burglar Alarm that catches would-be thieves in the act! Protect your prized possessions with this automatic alerter that sounds and stays on when someone tries to take your stuff. No heists allowed when you're around. 

Duration: 30 minutes (minimum)

How To Make It

1

BUILD YOUR CIRCUIT.
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2

PRESS YOUR CIRCUIT ONTO THE MOUNTING BOARD. Check out mounting board tips & tricks here.
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3

CLIP ONE ALLIGATOR CLIP TO THE LEFT ARROW PAD AND THE SECOND ALLIGATOR CLIP TO THE EARTH PAD.
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4

TURN THE POWER ON AND TEST YOUR CIRCUIT. Your body is conductive, so touching both clips lets electricity flow through the Makey Makey Bit, triggering an ON signal to the buzzer Bit.
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5

TAPE A LARGE PIECE OF FOIL ONTO THE BOTTOM ON YOUR "RULE YOUR ROOM" KIT BOX, AND ANOTHER SMALLER PIECE OF FOIL ONTO YOUR TABLE TOP.
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6

ATTACH YOUR CIRCUIT TO THE SIDE OF THE BOX, AND THE ALLIGATOR CLIPS TO THE TWO PIECES OF FOIL.
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7

MAKE A TRIP WIRE - this is what will set off the BURGLAR BUZZER. Cut a piece of paper that is larger than the small piece of foil.
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8

TAPE A PIECE OF STRING TO YOUR TRIP WIRE AND THE OBJECT YOU WANT TO PROTECT.
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9

PLACE THE TRIP WIRE SO IT COMPLETELY COVERS THE SMALL PIECE OF FOIL. This is to keep it from touching the foil on the bottom of the box.
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10

SET YOUR BOX DOWN ON TO THE TRIP WIRE, AND SET YOUR OBJECT ON TOP OF THE BOX.
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11

DO A TEST RUN! Pulling the piggy bank off the box should pull out the trip wire from between the two pieces of foil, setting off the BURGLAR BUZZER.
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12

PLAY! CHALLENGE A FRIEND TO NAB YOUR PIGGY BANK WITHOUT SETTING OFF THE ALARM.
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13

HOW IT WORKS

  • The POWER Bit provides electricity to the circuit.
  • The MAKEY MAKEY Bit sends an ON signal when the LEFT ARROW pad and EARTH pad are connected. This happens when the paper is pulled out, and the two pieces of foil touch, allowing electricity to flow through the circuit.
  • The BUZZER Bit sounds when it gets a signal from the Makey Makey Bit.
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14

REMIX

TRY SOME OF THESE IDEAS TO CUSTOMIZE YOUR INVENTION. THEN COME UP WITH YOUR OWN!

  • INCREASE YOUR SECURITY. Try using the servo to create a waving sign.
  • MAKE A STEALTHIER BUZZER. Can you think of a better way to make your invention blend in with your room? Try attaching it to a household object.
  • TRY IT OUT IN ANOTHER CONTEXT. See who you can prank!
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15

SHARE TAKE A VIDEO OF YOUR CUSTOM BURGLAR BUZZER IN ACTION AND POST IT ON THE LITTLEBITS INVENT APP.

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