Your project sounds great! A few questions though:
- When controlling house installations, I like the idea of being able to control anything manually also. Does the customCTRL box allow digital input for sync between 'real life' control and app control?
- What xbee versions do you use? And are those external modules/build in?
- Is the setup arduino compatible, and what interface is used for uploading of code?
Good luck with the project.