This document discusses open source home automation using LinkSprite.IO. It describes using a LinkNode D1 WiFi Arduino board along with various Linker sensor and actuator modules. It provides the hardware and software requirements, including using the Arduino IDE, Android SDK, and Java. It explains how to set up WiFi on the LinkNode and send sensor data to LinkSprite.IO via HTTP POST requests. Finally, it briefly mentions the possibility of Zigbee-based home automation using pcDuino.