Li-Fi transceiver using I2S audio (only the signal line, so missing clock and L/R). Demonstration of receiver being able to handle a protocol at higher frequencies than Arduino serial is capable of. Using an ESP8266 at max clock speed to send audio from an internet radio station from an example sketch using ESP8266Audio arduino library by earlephilhower (I dont have ability to post links quite yet with new account status). The high frequency undertone is a result of a loading effect present between the high speed comparator output and the input of the LM386 audio amplifier used. (I2S uses PDM clocked at over 700kHz and LM386 is an analog audio amplifier IC).....

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