Take a look at the Subpages listing and checkout the talk sessions.
Talks will take place on Saturday throughout the day in 2 parallel tracks, have a lock at the DevFest Agenda for details.
Calabash-Driver - Testautomation on Android native apps with selenium API style
OsciPrime an Open Source Android Oscilloscope - Combine Hardware with an Android app
Android and the Web of Things - Connecting devices
Google+ Platform - Overview of Google+ APIs