Light Seeking Robot ATLAS_15

Hey guys this is my first instructable,in wich i'll teach you how to make a light seeking robot.This is a project i've made ,because i like robotics, and i'm starting with it, so it's a simple way to build a robot.I've made it with very cheap materials, but if you want you can make it better ,i'm planning to make a radiocontrolled one , but i dont know anything about it .
Let's get started !!!....

Step 1: Part List and Materials

For this instructable you'll need :

2 Plastic circles , i used  circles but you can use any shape 

3 big screws and bolts 

Hot glue  and hot glue gun

Cables (1,5 meters aprox.)

2 Dvd 5.9 Volts Motors

2 TIP120 Transistor

2 1k Resistors 

2 1N4001 Diodes

2 LDRs

1 breadboard (optional , i didn't use it ,but it make a more structured project)

2 Wheels ( i got them from an old toy )

1 Switch 

To power up this project i'll be using a 9 volt battery , but you can also use a A23 12 volt battery or any other similar power source ,you'll also need sodering tools such a sodering iron stanium , helping hands ,etc.

 

Step 2: Circuit and Internal Structure

This is the diagram of the circuit i used . be carefull off the polarity of the motors and the position of the LDRs , because that defines the moves that the robot does .Before you proced to the next step , make sure that the motors spin in a correct way .There are no sodering instructions less than these , so you are free to make it in your way!!

Step 3: Creating the Body

To make the body i used 2 old plastic circles , and i attached it with screws and bolts as  it's show down there , but you can make the body you want , you could also use and od tupper .

Step 4: Glue It Up

So now we are at the fun step , i glued  the circuit to the body with the hot glue gun , i also added the wheels to the motors using  it .I glued the LDRs to the top circle of the body , as it's showed in the image below .After you glued everything you'll have to put on the bolts to close the body of the robot ....

Step 5: Finish !!!!

Now you are done !!! You've made a light seeking robot !!!!

I leave more images to show you more of my robot ,stay hungry stay  foolish ....