Disconnect the batteries from transmitter and receiver simple ir audio link circuit applications used in audio communications to transfer the audio signal from one place to other used in short range communications simple ir audio link circuit limitations this ir audio link circuit works only for short distances. Cheap diy wireless audio ir sound transmitter and receiver signal at the infrared receiver diode of the receiver circuit and the signal is demodulated to achieve sound attenuation . The aim of this project is to implement a wireless transmitter and receiver using rf modules it uses radio signals to transmit the data the working of the project is as follows the transmitter and receiver sections are placed at a distance of at least 20 meters in order to show the working of wireless communication between transmitter and . Infrared is the most commonly used wireless data transfer medium for limited range and we already covered about simple ir transmitter and receiver circuittoday in this article we will learn how to build a crude wireless audio transfer circuit using ir ledsusing this circuit you should be able to play songs from your ipod mobile or computer to an external speaker without having to connect . Below pictures showing the rf transmitter circuit with breadboard setup and below ones showing the rf receiver circuit with breadboard setup as you can see the rf transmitter circuit consists of the encoder ic and rf receiver circuit consists of the decoder icsince the transmitter does not need a regulated 5v we have directly powered it with a 9v battery
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