The arduino light switch.
Here is a web based interface to control some low voltage lines via the Arduino. The web interface will let you either singly turn an led on of off. You can also turn all the leds on or off at one time. From there you can interface all kinds of equipment. The basic circuit for the project is: Or to look at an Arduino board the relevant pins are: Whether is is for a Personal computer or one of many microcontrollers, the interfacing technique is pretty much the same. Here are two links to consider: http://www.instructables.com/id/Ubuntu-and-the-arduino/ http://www.instructables.com/id/External-device-control-ie-coffee-machine/ Now you can remotely turn on for off many devices and a start at home automation. The code: [code] #include <Ethernet.h> #include <SPI.h> //network NB: Pins 10, 11, 12 and 13 are reserved for Ethernet module. byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED }; byte ip[] = { 192, 168, 1, 200 }; byt...