Force.com provides an ideal platform for sensor data with the ability to relate information in the physical world to native or custom objects.
This post demonstrates using Force.com and Chatter to capture information from objects in the physical world and posting to Chatter feeds using the Chatter web services API.
This application is a very basic Facility Management app. There is a single custom object named “Building” that is comprised of many “Assets”, such as Conference Room, Main Entry, Air Conditioner, and Heating System.
The Chatter Bot is built using an Arduino Duemilanove electronics prototyping platform with Ethernet shield and a Radio Shack breadboard with motion and light sensors.
Author : Mike Leach (http://www.embracingthecloud.com/)