I have known John for a few years now due to him doing a write up on my LEGO Wheelchair for Make, back then he was working on a book that covered using LEGO and Arduino’s together, called Make: Lego and Arduino Projects: Projects for extending MINDSTORMS NXT with open-source electronics. It’s a fantastic book!
His new book, Hacking Your Lego Mindstorms EV3 is on a similar theme but of course for the EV3, not the NXT. It also covers making your own parts via 3D Printing and Laser cutting which I found very useful.
The book features nice colourful based instructions to build 5 projects and then how to hack each one (e.g change the EV3 for a Arduino or Pi). Like the previous book, this book uses products from Wayne and Layne e.g the Bricktronic Shield however also includes hacks / projects using the Raspberry Pi. I would of liked to have seen the introduction to Electronics chapter added to this book which exists in the previous book. I believe this book is more designed for beginners than the previous book.
If you own a EV3 and want to take it to the next step by using another controller, this book is a very good introduction for you.