Alarm for Bedroom With Lights and Sounds!

Hi, today I will show you how to make an alarm for the door of youre bedroom with Arduino UNO.

Cardboard:

Head:

• 4 pieces of cardboard (measures in the photo)

Body:

• 15 pieces of cardboard (measures in the photo)

Circuit:

• Ultrasonic Sensor

• 9V Battery

• Active Buzzer

• Red and green leds

• 2x 220 ohm resistor

• Arduino UNO (I use Elegoo UNO R3)

• Little Breadboard

Cables:

• 3x Male-to-male cables

• 10x Female-to-male cables

• Snap-on Connector

Instruments:

• Scissors

• Cutter

• Pencil

• GlueGun

Follow the diagram for circuit and download the code.

Cut the eyes so that the Ultrasonic Sensor passes us;

then paste all.

Paste 5 equal cardboard pieces to make a cube without the top part;

After decorate the cube;

Paste the little pieces in the cube;

Decorate the last piece;

You have the cube!

And now make the holes for leds and the buzzer.

Put the circuit in the robot;

Put in the holes the leds and the buzzer;

Get the Ultrasonic cables and the Snap-on cable in the hole of the top;

Close the box;

Add the head, decorate the robot and hide the battery under the head.

And that's it!!