Like breaking a combination lock you need a "tell " to work on. Assuming a piece of kit, impossible to get a remote control for and "universal " remotes do not register any change to the otherwise dead kit. If you broke into a ground or supply line to the microcontroller and monitored the supply current , would there be staged changes of current when exercised by various , but vast majority wrong, IR signals? ie simple swept 30 to 50 KHz oscillator source would you pick up on say
38KHz as the basic required "carrier" frequency ? Varying mark/space of gated pulses at that "carrier" f, would you pick up on the correct mark/space ? Then would there be a recognisable respone to various random "nibbles" that are parts of the required coding ?- posted
11 years ago