tatic char* getTelemetryPayload() {
  Senzor s = utilizator.getSenzor();
  int sensorValue = analogRead(A0);  // Read the sensor value
                                     // Convertirea valorii analogice la tensiune
  float voltage = sensorValue * (3.3 / 1023.0);
  float temperatureC = (voltage - 0.5) * 25;  // Convert the voltage to temperature in Celsius
  Serial.print("Temperature: ");
  Serial.print(temperatureC);
  Serial.println(" °C");
  // Create the JSON payload using sprintf
  sprintf((char*)telemetry_payload,
          "{ \"SenzorId\": %d, \"Val1\": %.2f, \"Val2\": %.2f }",
          s.getSenzorId(), temperatureC, (30 + (millis() % 10) / 10.0));

  telemetry_send_count++;
  Serial.println((char*)telemetry_payload);

  return (char*)telemetry_payload;
}