I will show you how to add an alarm to a box to frighten people
who try to look inside. ;)
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Step 1: Parts
Speaker (the one I am using is a Mastertone 8 ohm speaker)
Nine volt (9V) battery
Battery connecting wires
Arduino (I'm using the UNO)
33 ohm resistor
USB connector for arduino
Step 2: Arduino Code
Plug the Arduino into a computer and upload the code
Go to this link for the code: Code
Step 3: Connecting Arduino to Breadboard
The green wire goes to 3.3v in the Arduino and the very first negative slot by column A
The white wire goes to GND or two slots away from the green wire in the Arduino and in the positive slot by the green wire
The orange wire goes to number 7 in the Arduino and at C13 (over 3 slots then down 13 slots)
Step 4: Resistor
The resistor goes to D3 (over 4 then down 3)
The other side goes in D13 (right next to the orange wire)
Step 5: Button
One wire goes in the negative slot right next to the green wire
The next wire goes to E3 (right next to the resistor)
Step 6: Speaker
One side goes into number 7 on the Arduino
The other side goes into the 4th set of 2x5 positive-negative slots at the bottom corner (negative)
Step 7: Battery
The two battery wires can go anywhere in the Analog In area
Step 8: Attaching Alarm System to Box
Attach the alarm system to the back of the box you want, my box is just an example
Step 9: Attach the Button
The button should be under the lid and securely attached, we don't want it to move around.
Step 10: Finished!
Enjoy your Alarm Box!
Participated in the
Hiding Places Contest