Welcome to my RC5 Decoder page. Here you will find design information relating to my RC5 Decoder project, along with schematics, PCB layouts and source code. All of this information is provided free of charge to the Electronics Design Hobbyist community. Please read my Projects Readme before you download any of my content.

If you're a computer geek, you might think I'm claiming to have built a project that decrypts the RC5 block cipher. I wish that were the case, and indeed if it were I'd certainly be earning a lot more money than I am now! But alas, this project refers to a much simpler idea - the RC5 protocol for wireless (infra-red) communication. If you've used a television remote control before, then it's quite possible that you've used one that transmits RC5 coded commands. In that case your television will be acting as an RC5 decoder; receiving the infra-red data stream from your remote control, decoding it and acting upon the command it has received.

The project described here can receive an RC5 coded infra-red data stream, decode it, and display the address, command and toggle data on an alpha-numeric LCD.