By: 9B J05137 Alissa Lin 林家莉

Color Changing Disco ball is a small sized paper disco ball light decoration that can be used in a party or just as a usual night light in a room. By using the RGB LED light it can randomly change colors to create a better atmosphere. The disco ball will only begin to turn and light up in dark conditions, so in conditions that are bright, the disco ball wouldn’t have any movements. In addition, the disco ball turns in reverse circles, so the light can move around the room.

Supplies

Arduino Leonardo
Breadboard
2 RGB LED Light
1 servomotor
Wires
Electrical resistance
Photoresistor
Jumper wires
A box
paper board
B3 dark color paper
Hole Puncher
Pencil
Scissors
Glue (hot glue gun, white glue, etc.)
Tape (transparent, paper, double-sided, foam)
A compass (optional)
Decoration tape (optional)

Step 1: Circuit

*Remember to use jump wires to connect the LED lights and the Photoresistor and use paper tape to secure.

*Individual circuit for Servo/RGB/Photoresistor is provided.

Step 2: Code

*The code includes the change of random colors for the RGB light, the Photoresistor to detect the brightness and the degrees that the servomotor will turn

LINK: https://create.arduino.cc/editor/Alissalin/345f1768-5126-4749-bb76-866be011d824/preview

CODE:

void setup()

{

Serial.begin(9600);

servo_pin_2.attach(2);

}

void loop()

{

Serial.print(analogRead( A0 ));

Serial.print(" ");

Serial.println();

if ((analogRead( A0 ) ) < ( 550.0 ))

{

analogWrite(6 , random(1000.0));

analogWrite(5 , random(1000.0));

analogWrite(3 , random(1000.0));

servo_pin_2.write( 0.0);

delay( 1000.0 );

servo_pin_2.write( 180.0 );

delay(1000.0);

}

else

{

analogWrite(6 , 0.0);

analogWrite(5 , 0.0);

analogWrite(3 , 0.0);

delay( 1000.0 );

}

Step 3: Make the Disco Ball

Download the template and print it out LINK: https://ibb.co/mF9wZ8
Cut out the template
Prepare a dark-colored b3 paper
With the template, trace 12 of the shape on the color paper
Cut out the traced shape
Fold where the solid lines are drawn and punch 4 or more holes on each cutout paper
Stick all the cutout template one by one together, until you form a sphere using all 12 cut out template

Step 4: Making the Base

Get a box that is big enough to fit in your Arduino board and the disco ball on top
Cut out a smaller circle on the box that fits the servomotor to pop out perfectly
Cut out a small hole for the Photoresistor to pop out too
Decorate the box however you prefer

Step 5: Putting All Together

Put the Arduino board inside the box prepared
From the inside of the box let the head of the servomotor to pop out from the big circle that you cut earlier
Slide the Photoresistor out of the hole, so it can detect the light
Cut out a big circle that is a little bit bigger than the disco ball (About diameter 9cm)
Poke two holes for the RGB light to show
Stick the circle on the servomotor with double-sided tape and foam tape
Use a hot glue gun to stick on the disco ball, and make sure you covered the RGB light