In almost ten years of research and experiments I have developed a data-link that uses a single LED for both reception and transmission: https://github.com/giob

In almost ten years of research and experiments I have developed a data-link that uses a single LED for both reception and transmission: https://github.com/gioblu/PJON/tree/master/src/strategies/AnalogSampling https://github.com/gioblu/PJON/tree/master/src/strategies/An... 2 devices with a single LED on each can establish half-duplex wireless communication based on light impulses. I think that is a much more efficient and cheap way to transport configuration settings or even an entire program.