I was inspired by cat toys and the shape of ground cherries. I created this lamp project for my cat. When I couldn’t spend time with my cat and left her alone at home for a long time. it makes me feel bad. especially, when I went out in the morning and came back to home at the night time. My cat left alone in the dark space. I couldn’t turn on the light and left home. That’s why I decide to make this lamp with a photocell sensor which senses the brightness. In my lamp, There is three lamps and lamp will be turned on by the brightness of its environment. for example. When It’s completely dark all 3 lights will be turned on. If it’s little bright then 2 lights will be light on. when it’s bright but little dark then 1 light will be turned on. when it’s really bright then no light will be turned on.

for materials, I try to use materials that cats like. I choose to make lampshades with origami paper because cats like the sound of paper boxes. for the pole, I cover it with my long sock which my cat loves to smell. I also braid wires with three different colours of normal yarns to give a soft feeling.

Materials

1 - 10K ohm resistor

3 - 330 ohm resistor

3 - 8.5" x 8.5" papers

3 - LED Diffused 10mm

Copper tape

3/16" thick foam board

"Wire Wrap" Thin Prototyping & Repair Wire - 30AWG

yarn ( not conductive )

long sock (use missing pair sock)

Step 1: Prototype Circuit and Test It Before Put It Inside the Lamp

Arduino code and the piece test.

Follow the circuit sketch

gather all the pieces on the breadboard and upload the code to Arduino.

Test all the parts before putting it inside the lamp.

Make sure all the parts work properly.

Check the test video and see how it works.

Upload following code ( you can change the sensor valuse definding on envirnment light.)

int sensorPin = A0; // select the input pin for the potentiometer
int ledPin1 = 9; int ledPin2 = 10; int ledPin3 = 11; // select the pin for the LED int sensorValue = 0; // variable to store the value coming from the sensor

void setup() { // declare the ledPin as an OUTPUT: pinMode(ledPin1, OUTPUT); pinMode(ledPin2, OUTPUT); pinMode(ledPin3, OUTPUT);

pinMode(sensorPin, INPUT); Serial.begin(9600); }

void loop() { // read the value from the sensor: sensorValue = analogRead(sensorPin);

if (sensorValue > 0 && sensorValue < 50 ){ // turn the ledPin on digitalWrite(ledPin1, HIGH); digitalWrite(ledPin2, HIGH); digitalWrite(ledPin3, HIGH); } if (sensorValue > 50 && sensorValue < 100 ) { // turn the ledPin on digitalWrite(ledPin1, LOW); digitalWrite(ledPin2, HIGH); digitalWrite(ledPin3, HIGH);

} if (sensorValue > 100 && sensorValue < 150 ) { // turn the ledPin on digitalWrite(ledPin1, LOW); digitalWrite(ledPin2, LOW); digitalWrite(ledPin3, HIGH);

}

if (sensorValue > 150 ) { // turn the ledPin on digitalWrite(ledPin1, LOW); digitalWrite(ledPin2, LOW); digitalWrite(ledPin3, LOW);

}

Serial.println(sensorValue); }