Insult Your Neighbors This Christmas With Arduino : 3 Steps - Instructables
Use Arduino With TIP120 Transistor to Control Motors and High Power Devices - Instructables
What is TIP120?
power electronics - Making a Darlington transistor (eg: TIP120) with D882 to drive 12V LEDs with 3.3V or 5V input RPi - Electrical Engineering Stack Exchange
SOLVED] LED Strip not lighting up - General Electronics - Arduino Forum
TIP122 NPN transistor - General Electronics - Arduino Forum