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How to make an IR receiver and recover remote control codes from a dying remote

My surround system remote is starting to show its age so I decided to make an IR receiver to save and salvage its codes for ...
IEEE

Design of Infrared Audio Transmitter and Receiver for point to point data transmission

Abstract: The main idea behind this paper is to generate musical notes by infrared radiations. The infrared radiations are transmitted and received by IRLEDs and phototransistor respectively. This ...