What you will need:
Arduino Mega 2560
Parallax Ultrasonic sensor
USB wall charger
Arduino cable (3 ft)
Step 1: Wiring
You will be connecting the wires to these pins:
Step 3: Ribbon Cable
Step 4: Attachments - Servo
As the title suggests, we'll be starting with the servo.
Step 5: Attachments - LED
If you are wondering where I got the LEDs, I got them from here -> http://www.sparkfun.com/products/11588
It is a kit that works very nicely with this project.
Step 6: Attachments - Ultrasonic
You can get a Ping sensor from here -> http://www.parallax.com/product/28015
Step 7: Tupperware
We will need to make two cuts. One for the ribbon cable, and the other for the cable that will power the Arduino.