uint8_t StartWiFi() {
  Serial.println(WiFi.macAddress());
  Serial.println("\r\nConnecting to: " + String(ssid));
  IPAddress dns(8, 8, 8, 8); // Use Google DNS
  WiFi.disconnect();
  WiFi.mode(WIFI_STA); // switch off AP
  WiFi.setAutoConnect(true);
  WiFi.setAutoReconnect(true);
  WiFi.begin(ssid, password);
  if (WiFi.waitForConnectResult() != WL_CONNECTED) {
    Serial.printf("STA: Failed!\n");
    WiFi.disconnect(false);
    delay(500);
    WiFi.begin(ssid, password);
  }
  if (WiFi.status() == WL_CONNECTED) {
    wifi_signal = WiFi.RSSI(); // Get Wifi Signal strength now, because the WiFi will be turned off to save power!
  Serial.println("WiFi connected at: " + WiFi.localIP().toString());
  }
  else Serial.println("WiFi connection *** FAILED ***");
  return WiFi.status();
}

void StopWiFi() {
  WiFi.disconnect();
  WiFi.mode(WIFI_OFF);
 Serial.println("WiFi switched Off");
}