Caution

This project is still in progress thus this repo will be changing often.

Project Description:

This project aims to design and implement a digital FM receiver capable of receiving analog FM radio signals and converting them into digital data. The project will include:

Hardware:

Schematic and PCB Design: A carefully designed schematic and PCB will be created to ensure optimal performance and reliability of the FM receiver circuit.
Arduino R4 Microcontroller: This powerful 32-bit microcontroller will be used to process the digital output and interface with the PC.
Antenna: An efficient antenna will be designed to capture FM signals effectively.

Software:

Firmware: The Arduino R4 will be programmed to:

• Receive FM signals from the antenna
  
• Demodulate the signals to extract audio data
  
• Convert the audio data into digital format
  
• Transmit the digital data to the PC via a serial communication protocol
  
• PC Application:
  • C++: Program the arduino microcontroller
    
  • C#: A C# application will be created to provide a user-friendly interface for controlling the receiver and visualizing the received data.
    

Key Features:

• High-Quality Audio Reception: The receiver will be optimized for clear and accurate audio reproduction.
  
• Reliable Data Transmission: The serial communication between the Arduino and PC will ensure robust data transfer.
  
• Flexible Software Interface: The C++ and C# applications will offer versatility for different use cases.
  
• Customizable Hardware: The modular design will allow for easy customization and experimentation.
  

Project Goals:

• Successfully design and build a functional FM receiver.
  
• Demonstrate the ability to interface the receiver with a PC using a microcontroller.
  
• Develop user-friendly software applications for data processing and visualization.
  
• Explore potential applications for the receiver, such as audio streaming, signal analysis, and more.
  
• By combining hardware and software expertise, this project aims to provide a comprehensive solution for digital FM reception and processing.
  

Tools used:

• KiCAD
  
• IDEs:
  
• Google Gemini & GPT 4.xx
  
• etc.
  

Resources:

• FM Radio block diagrams: https://users.encs.concordia.ca/~paknys/block.pdf
• Antenna selection: https://www.ahsystems.com/articles/antenna-selection.php

Board Schematic

PCB