This is a general purpose remote control project with using programmable PIC microcontrollers. Schematics are shown for using infrared (IR) or radio (RF) media. If you are not familiar with microcontroller programming, you can use fixed encoder and decoder integrated circuits instead. Well-known such IC-s are Holtek HT-12D, HT-12E and Motorola MC145026, MC145027, MC145028.source

This is a simple IR receiver circuit which plugs into a serial port of a computer. Okay, there are many other circuits of this kind, and most of them are even simpler, but this circuit has two major advantages: (1) it uses an Atmel AVR RISC microcontroller (an AT90S2313) instead of the usual PIC microcontroller and (2) it uses a Maxim MAX232 for the generation of valid RS232 levels.source

The function of the device is very simple. Any IR remote than can be programmed to use the Sony protocol will work. The module outputs the device code (TV/VCR/DVD/AUX) and the button pressed, so the device can be used on as many different projects as your remote has devices (usually four). The numeric keys output the number of the key (0 outputs a 0, etc.). The function keys all output unique numbers. source

This project can steer 10 different things wireless with the use of a normal TV-remote-control with the RC5 protocol, from manufacters like Philips, Grundig and Marantz.If the Proton PIC Basic compiler is available, then you can ofcourse change the number of channels.When ‘TV’ mode is selected on your remote-control, you can with the buttons 0 through 9 on it, steer 10 outputs on and off.When there is an unused system on your remote-control (SAT, AMP, DCC, VCR2) then the code in the PIC can be changed with the remote-control to another system.source

This project is an expansion from another project .On the one side you can read the RC5, RC5X and RC6 codes from remote controls on a LCD and on the other hand you can send all thinkable RC5, RC5X and RC6 codes to a device.Besides is for this project a PCB layout drawed to make it still more easier for you.The circuit based on PIC16F628A.source