In this post we shall be exploring the usage of the solar panel and a headphone jack as a probable LiFi based module. We will be making use of the Arduino’s ToneMelody example to play tones on a LED. The LED will be shone on a Solar panel whose output will be relayed on to the computer with a 3.5mm headphone jack.
Now, some people might be uncomfortable in using an Arduino. OK! Instead of using the Arduino one can use combine the mobile phone and headphone jack to generate the tone instead. The schematics of this is given below: