Preface

Classic Bluetooth became a revolutionary technology when it replaced line-of-sight infrared communication. It was almost unbelievable to imagine that you could walk in close proximity and still transfer files from one cell phone to another. Classic Bluetooth broke the conventions and penetrated deep into the consumer electronics market.

When it comes to technology, weaknesses and mistakes are not easily tolerated. The Bluetooth SIG understands this, which is why they rethought the very foundation of classic Bluetooth. With the launch of Bluetooth Low Energy, they stamped their claim over not just small-distance communication, but also considerably long-distance communication using meshes. Providing the low-power, low-cost, and high-distance communication of Bluetooth 5 will surely benefit BLE in the Internet of Things.

Building Bluetooth Low Energy Systems is a book that understands the importance of this technology. It discusses the background of Bluetooth Low Energy and how it is being used in different IoT products. This book provides a practical understanding of the fundamentals of communication: the client/server architecture of Bluetooth. It does not stop there--it moves forward to explain Bluetooth beacons with indoor navigation, Bluetooth CSRMesh, and Bluetooth-Internet gateways. All these compelling implementations of BLE are not just explained but put into code using different APIs. With these examples, the book will bring a deeper understanding of Bluetooth Low Energy systems as they exist today.

Changing technology brings motivation to learners and gives them encouragement to apply it in their daily lives. This book will provide you with necessary tools to learn and apply this technology. It will give you enough knowledge about Bluetooth Low Energy that you will move many steps ahead in developing stuff. It is highly encouraged that you learn from the book and build advance Bluetooth Low Energy systems.

With the launch of Bluetooth 5, the SIG made known their intentions of making this technology a front-line player in the Internet of Things. We already have Bluetooth sitting in our pockets; it is just a matter of time that everything around is connected to us through it. This is why it is worthwhile to spend time learning this fast-growing and continuously expanding technology.