This Project is something i started for my Microcontroller class. We were tasked with picking either Arduino or Raspberry pi and then get the MCU to control an RC car or do something fancy with an RC car; Then once we decided what we were going to do we were to make a tutorial so that we too could show others what we were doing. I chose to control the remote control car using my Android phone via bluetooth.
For this project you will need these parts(A link to place where to get them will be provided if possible):
1 x Arduino UNO R3 || http://www.adafruit.com/products/170
1 x Motor Shield || http://www.adafruit.com/products/1438
RC Car or Motor or Alternative || Hobbyist Store, Adafruit, Toy Store
RC Car Battery 5v+ || Should come with the RC car if you buy one.
1 x HC-06 Bluetooth Module or Similar || Hobbyist Store, Ebay
1 x Female to female 4 pin cable || N/A, mine came with the bluetooth module
Jumper Cables || Hobbyist Store, Ebay
9v Battery pack || http://www.adafruit.com/products/67
Step 1: The Motor shield.
First of all we need to setup the Arduino and Motor shield. If you bought the motor shield you're going to have to solder, Grab your solder and you soldering iron and follow this tutorial: http://learn.adafruit.com/adafruit-motor-shield-v2-for-arduino/install-headers