FM Transmitter Pickup Pick up Module Mini Wireless Microphone MIC Wireless Audio Transmitter FM Emission MIC Core Board V4.0

hey what's going on guys, this is Kedar here so today we are going to build an FM transmitter that is ultra small, so let's get started, now if you do a quick little Google search on to FM transmitter circuit. you'll get many simple yet working circuits. if you prototype this circuits. it works really good but still they are big enough so they are not considered as spy ! so after searching little bit onto the internet i found this very interesting FM transmitter modules, this modules have a built-in microphone and you can also adjust the frequency by this potentio meter so i decided to use this modules for the battery i'm going to use this 3.7 volts lipo battery. i'm using this hundred milli amps per hour capacity and it will last more than 50 minutes of use. so start by soldering positive and negative terminal of the battery to FM transmitter module and there it is guys your FM transmi