How to Set a Fixed Frequency on TEA5767 FM Module

If you don't need a station scanning function and want your Arduino radio to always play the same station, the best solution is a "locked" frequency. This example shows how to set the TEA5767 module to a fixed frequency (e.g., 98.8 MHz).

Hardware Requirements

• Arduino board (Uno, Nano, or Mega)
• TEA5767 FM radio module
• Antenna (a simple wire will suffice)

Wiring (I2C Protocol)

The TEA5767 uses I2C communication. Connect it to the following pins:

Arduino Code for a Single Frequency

#include <Wire.h> // Library for I2C communication 
#include <TEA5767.h> // Library for TEA5767 module 

TEA5767 radio; // Create radio object 
unsigned char status[5]; // Buffer for reading status 

void setup() {
    Serial.begin(9600);
    Wire.begin(); // Initialize I2C 

    radio.init(); // Initialize the module 
    radio.set_frequency(98.8); // Set fixed frequency (e.g., 98.8 MHz)

    Serial.println("FM Radio ready at 98.8 MHz");
}

void loop() {
    // Check signal strength every second
    if (radio.read_status(status)) { 
        int signal = radio.signal_level(status); // Signal strength 
        int isStereo = radio.stereo(status); // Check stereo mode 

        Serial.print("Signal Strength: "); [cite: 147]
        Serial.print(signal); [cite: 148]
        Serial.print(" | Stereo: "); [cite: 149]
        Serial.println(isStereo ? "Yes" : "No"); [cite: 150]
    }
    delay(1000); 
}