This project allows one to take the video recorder and satellite receiver remote controls upstairs, and operate the equipment from there. There is no additional cabling to install, the signal being carried along the existing coaxial aerial cable linking the two rooms.
http://www.web-ee.com/Electronic-Projects/projects/remote_extender1/index.htm
This is a NEC-SIRCS-JAPAN-RC5-SAMSUNG compatible, multiprotocol infrared remote control that replaces up to 6 existing remote controls into one. More protocols can be added later if needed.
http://www.techdesign.be/projects/011/011.htm
http://www.mitedu.freeserve.co.uk/Circuits/Interface/ir_switch.htm
Infrared remote controls are using a 32-40 kHz modulated square wave for communication. These circuits are used to transmit a 1-3 kHz digital signal through infra light. The transmitter oscillator which is driving the infrared transmitter LED can be turne
http://jap.hu/electronic/infrared.html
http://jap.hu/electronic/infragate2.html
will allow you to turn on any piece of equipment that operates on 115 volts AC.
http://home.maine.rr.com/randylinscott/aug98.htm
simple device that connected to the computer serial-port enables the reception of infrared codes emitted from any commercial remote control unit and with a little Windows program.
http://www.pcremotecontrol.com/circuit.html
http://www.howstuffworks.com/inside-rc.htm
simple circuit which controls one relay output.
http://www.aaroncake.net/circuits/irremote.htm
http://www.mitedu.freeserve.co.uk/Circuits/Interface/irext.htm