Let’s Build a Spirit Box

/// Simple Spirit Box Arduino Code
/// (C) Copyright Spotted: Ghosts 2024
/// If you use this code please give credit

#include <TEA5767.h>

// Delay between station change (in ms)
int PAUSE = 20;

// Time to stay on station for (in ms)
int ON_STATION = 400;

// Start Frequency
float STATION = 87.50;

// Forward (true) / Reverse (false) sweep
boolean FORWARD = true;

short minlvl = 0; //Required Signal Level (0-5=unuseable, 6-9=poor, 10-12=good, 13-14=really good, 15=excellent)

TEA5767 radio = TEA5767();

// Setup a FM only radio configuration
// with some debugging on the Serial port
void setup() {

  // open the Serial port
  Serial.begin(57600);
  Serial.println("S:G Spirit Box...");
  delay(200);

  // Initialise the Radio 
  radio.init(minlvl);

} // setup


/// Main loop
void loop() {
  
  radio.setFrequency(STATION);
  Serial.print("Station: ");
  Serial.println(STATION);

  delay(ON_STATION);

  radio.setMuted(true);
  delay(PAUSE);
  radio.setMuted(false);

  if(FORWARD) {
    STATION = STATION + 0.1;
    if(STATION > 108.00) {
      STATION = 87.50;
    }
  } else {
    STATION = STATION - 0.1;
    if(STATION < 87.50) {
      STATION = 108.00;
    }
  }
} // loop


// End.

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