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Hello, guys, my name is Krish Singh Chandhok and I am 11 years old Today I am making a sunglass robot it's working when you are in sun and gets of when you are in shadow.lets see how to make it

Step 1:connect servo motor and LDR 

Solder the all the components on the board with the help of the diagram.

Step 2: remove the glasses.

Remove the glasses from the sunglass.

Step 3: stick the glass on the servo horn like this.

Now stick the servo motor on the frame.

Step 4: stick Arduino Uno and LDR sensor on the frame like this .

Like this.

Step 5: Upload the code.

#include<Servo.h>
Servo sglass; //servo name
int ldr= 0;   //connect LDR to A0
int value= 0; //define value 0
void setup() 
{
 Serial.begin(9600); //this is not necessary-but to show value to pc
 sglass.attach(9);   //declare in which pin the servo you attach
}
void loop()
{
 value = analogRead(ldr);  //read value-analog from A0
 Serial.println(value);    
 delay(100);
 if(value<100)  //change the value as you wish
 {
   sglass.write(155); //black glass down
   delay(100);     //a bit delay for the servo to move there
 }
 else
 {
   sglass.write(80);  //black glass up
   delay(100);
 }
}

Step 6 : ready to work.

Power on the project wear the glasses and it's ready to work.

Demo : here's the demo you can watch