Rogier's Tinker Projects: Control lights with an Arduino remotely with 433Mhz

I wanted to use Arduino's for a domotica project. The main purpose is to control the lights in my livingroom, using a web-interface. This way I can switch on and off my lights with my mobile phone, iPad, etc. even when I am not home (over the internet)! Because making elektrical connections with Arduino's and the outlet power supply went wrong one time earlier (blew all the fuses!), I wanted to use secure standard components for the high-power part. So, I bought these:

This is a set containing of one transmitter and a couple receivers to wirelessly switch lights (plugged into the outlets) on or off.

The Arduino has a 433 Mhz transmitter and receiver. This way I can listen to what is being broadcast, or I can send signals/codes myself. This is the one I am using: http://www.emartee.com/product/41357/

I used my Arduino to "sniff" the sent signal from the transmitter to the receiver switching the lights. I did this for all on/off combinations for all lights.

The Arduino is also equipped with an ethernet shield, so I can host a litte web application on it. I use this to be able to command my Arduino over the internet or my house network.

So I have:

An Arduino that "understands" the remote control and can learn from it;
The possibility to send signals myself as well;
A small web application running on the Arduino.

In the video below, you can see I am learning the codes from the original transmitter to my Arduino. After learning, I can use the web interface on the Arduino, to retransmit those codes, to switch my lights on and off!

Useful links

To be able to send and receive the remote's signals, I used the RemoteSwitch library as RF-library, check https://bitbucket.org/fuzzillogic/433mhzforarduino/wiki/Home
For the webserver on the Arduino, I used the Webduino Library.
To store the learned codes, and be able to remember them (even after a reset of the Arduino), I store them in the EEPROM. An easy way to store stuff in the EEPROM, is by using the EEPROMAnything code.
My code examples: