Software-Defined Radio implemented in C++ for use on Raspberry Pi hardware.

Outputs the RF signal to GPIO4 (Pin 7). Connect a short piece of wire to this pin to act as an antenna.

I made this project a few years ago for fun. Only ever tested on the Raspberry Pi 3 Model B+.

Install dependencies:

$ sudo apt-get update
$ sudo apt-get install build-essential libraspberrypi-dev

Build with:

$ make

Run with:

$ sudo ./fm [FREQUENCY] [FILES...]

Where [FREQUENCY] is in MGHz and the supplied audio file(s) are .wav files.

Unauthorized radio transmissions may be illegal depending on where you live. Please consult your local laws for further information.

This software is licensed under MIT. Copyright © 2025 Zach Collins