In remote-controlled sockets, when a key is scrambled, a coded message is sent from the transponder of remote controlled sockets to the receiver.The plan is to read and record this message and then send it wherever we want through the web.
This tutorial describes that how to create the website using PHP for communicating with Arduino and Arduino Ethernet Shield 2.
More complicated clients, one which monitor updates from the steward looking for changing conditions, and reacting to them on behalf of the user by asking the steward to perform actions, are entirely possible. Technically speaking these are intelligent agents working in a multi-agent system with shared goals of making life more convenient for the user. We like to think that we're implementing magic.
Reads a light and temperature sensor and exposes their values (JSON) over a simple HTTP server running on an arduino (with ethernet sheild). Also exposes the value of a relay which can be updated over HTTP.
Here you can find a step-by-step tutorial about the Bascom-AVR code to drive an AVR and an WIZ830MJ Ethernet controller. This tutorial is based on the Arduino Mega shield with WIZ830MJ, VS1053 MP3 decoder, Micro-SD-slot, 128 Kbyte SRAM from Michael Köcher.