Arduino Combi-button Lock w/ optional iOS/Android support

Step 1: Components - What you will need

To make this lock, you will need:


Essentials

-> An Arduino board - in my case an Arduino UNO I purchased from oomlout.co.uk. I bought the starter kit, and I would highly recommend it - go check them out!
-> A USB type-A to USB type-B cable
-> The Arduino IDE - download from arduino.cc
-> A breadboard

Hardware version:
-> 4 x push buttons/switches
-> 4 x 10k ohm resistors

iPhone/iPod Touch OSC Controlled version:

-> TouchOSC app ($4.99 on AppStore, and I believe it is free on Android)
-> TouchOSC layout editor
-> The Processing IDE - download from processing.org