Garage door opener working for 9 months now. This is PRE-Agents. 

Hardware config:
RFID (ID20)
Arduino Uno
ImpShield
SD Card IMP-001
My circuit with relay to open garage door
10 turn resistor pot to measure door position
5v power supply

This has been working great for 9 months. RFID access, web access, charting position on Xively.com

This is a save of this working version to be able to back-track if I mess up while working with the new Beta Agents at electric imp.