Android Essentials is a no-frills, no-nonsense, code-centric run through the guts of application development on Google's Mobile OS. This book uses the development of a sample application to work through topics, focusing on giving developers the essential tools and examples required to make viable commercial applications work.
Android Recipes: A Problem-Solution Approach, Second Edition offers more than 100 down-to-earth code recipes, and guides you step-by-step through a wide range of useful topics using complete and real-world working code examples. It's updated to include the Jelly Bean Android SDK as well as earlier releases.
Arduino Internals delivers aspiring Arduino hackers from their dependence on existing Arduino implementations. Along with an incisive analysis of existing Arduino hardware and software, you'll learn how to design your own optimized Arduino hardware, and become a designer of Arduino boards and peripherals.