I've recently built <a href="http://forums.netdui...d-app/>this</a> project, and I've got it all working pretty well!
It was for a client who operates an impound lot here in town. His gate is controlled by a glorified garage door opener. Sometimes, insurance adjusters need to get in while he isn't there, and with this app he can open the gate from anywhere.
I've also installed some security cameras for him, and we put in a 22x PTZ camera that he plays with constantly. The PTZ camera receives commands from the iPhone app through a dvr that communicates over RS-485. So when someone needs in, he opens the android app, opens the gate, exits the android app, opens the DVR app, and watches them while they're inside. Which brings me to my idea...
What if the Netduino+ could receive RS-485 commands? The app has several functions that the camera doesn't support, like iris adjustment for instance. So, if i could somehow "read" what that command was and assign it to the Netduino+, then have it open the gate, he could open the gate straight from the android app without having to switch back and forth.
Actually, i'll probably use one of these:
http://www.ebay.com/...y-/130346129177
Edited by Nick Holt, 27 November 2012 - 09:15 PM.