Lego Mindstorm by connecting Lego sensors and motors
Raspberry Pi Humidity and Temperature Sensor and Dashboard
Node.js Embedded Development on the Raspberry Pi
IoT Dev Kit for Raspberry Pi and BeagleBone Black
Robotics framework with support for 36 different platforms
A basic USB camera can be used to detect motion in a room.
Internet of Things framework
Connect sensors to the Raspberry Pi and control them with Java.
PubNub and Node-RED controlled Lego city on a RaspberryPi and Arduinos
Integrated Development Environment (IDE) written in Java
Arduino Node.js RC Car Driven with the HTML5 Gamepad API
Getting hadoop to run on the Raspberry Pi
Running Java EE Applications with Payara Micro
A Java driver for the popular monochrome SSD1306 128x64 OLED display