Shopping List for the Electrical Setup

Arduino Mega 2560 Rev 3 x1:

http://store-usa.arduino.cc/products/arduino-mega-2560-rev3

Full Sized Breadboard x2:

https://www.adafruit.com/products/239

Female-Female 2.54 to 2.0mm Jumper Wires x2:

https://www.adafruit.com/products/1919

Extra-long break-away 0.1" 16-pin strip male header (5 pieces) x2:

https://www.adafruit.com/products/400

Breadboarding Wire Bundle 65pc x2:

https://www.adafruit.com/product/153

Servo - Generic High Torque (Standard Size) x4

https://www.sparkfun.com/products/11965

Universal lithium ion battery pack  x1

http://www.powerstream.com/PST-MP3500.htm

ArbotiX-M Robocontroller x1

http://www.trossenrobotics.com/p/arbotix-robot-controller.aspx