Book Image

Raspberry Pi 3 Projects for Java Programmers

By : Rajdeep Chandra, John Sirach, Pradeeka Seneviratne
Book Image

Raspberry Pi 3 Projects for Java Programmers

By: Rajdeep Chandra, John Sirach, Pradeeka Seneviratne

Overview of this book

Raspberry Pi is a small, low cost and yet very powerful development platform. It is used to interact with attached electronics by the use of it's GPIO pins for multiple use cases, mainly Home Automation and Robotics. Our book is a project-based guide that will show you how to utilize the Raspberry Pi's GPIO with Java and how you can leverage this utilization with your knowledge of Java. You will start with installing and setting up the necessary hardware to create a seamless development platform. You will then straightaway start by building a project that will utilize light for presence detection. Next, you will program the application, capable of handling real time data using MQTT and utilize RPC to publish data to Further, you will build a wireless robot on top of the zuma chassis with the Raspberry Pi as the main controller. Lastly, you will end the book with advanced projects that will help you to create a multi-purpose IoT controller along with building a security camera that will perform image capture and recognize faces with the help of notifications. By the end of the book, you will be able to build your own real world usable projects not limited to Home Automation, IoT and/or Robotics utilizing logic, user and web interfaces.
Table of Contents (8 chapters)
Integrating a Real-Time IoT Dashboard

Using the Bluetooth chip on the Raspberry Pi

Since the Raspberry Pi 3, a Bluetooth chip that supports BLE 4.1 has been present on the board. Using Bluetooth from Java can be a challenging thing to do. The latest specification of Bluetooth integration is from the JSR (Java Specification Request)-82 from 2010, which is version 4, and is implemented in J2ME (Java 2 Micro Edition). Although this specification is implemented in J2ME, there are libraries available that provide this specification, although not completely, for J2SE. One of these libraries is called BlueCove.

BlueCove tries to comply with the JSR-82 specification published in 2010. Initial support from BlueCove is for non-ARM based devices. To be able to use Bluetooth on ARM-based devices such as the Raspberry Pi, we will need to create the necessary libraries ourselves or we can use pre-built libraries. The download already contains the libraries we need...