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ESP8266 WiFi Voice control Multilanguage Car
Die Lösung erfordert eine HTTPS-Verbindung zu einem Webserver mit Google Chrome, dem einzigen, der Webkit unterstützt!

Sprachgesteuertes RC-Car - Versuchen Sie es online HIER !!!


  • Die Lösung verwendet den ESP8266-Mikrocontroller, der in regelmäßigen Abständen eine Verbindung zur HTTPS-Website herstellt und den Inhalt einer Textdatei herunterlädt.
  • Die Befehle, die der ESP8266 auf dem RC-Car ausführt, werden einzeln in die Textdatei geschrieben.
  • Die Befehle werden vom Systembenutzer eingegeben, der über das HTTPS-Protokoll in der Weboberfläche über den Browser verbunden ist Google Chrome. Jede Weltsprache kann verwendet werden, einschließlich der Sprachregion. Die aktuelle Programmimplementierung verwendet Englisch in der US-Region.
  • Die Umwandlung von Sprache in Text wird von Google-Servern auf eine Xhr-Anfrage hin durchgeführt, die automatisch vom Nutzer ausgelöst wird.
  • Es werden 4 Vorwärts-, Rückwärts- und Seitwärtsbefehle unterstützt.
  • Zwischen den beiden Verbindungen liegt eine Pause von 2000 Millisekunden, bis die Verbindung beendet und der aktuelle Sprachbefehl ausgeführt wird.
  • Die Systemantwort ist, dass die Verbindung innerhalb von 30 Millisekunden praktisch sofort hergestellt wird.
  • ESP8266 verwendet HTTPS-Konnektivität mit dem Webserver durch die Implementierung der WifiClientSecure-Bibliothek und des Webserver-Zertifikats.
  • Das System eignet sich sowohl für Schulprojekte als auch für autonome Fahrzeuge, die von überall auf dem Boden gesteuert werden. Das Projekt kann mit einer Kameraaufzeichnung und verschiedenen anderen Sensoren abgeschlossen werden.
  • Kompatibilität für (in Arduino Core 2.3.0):

  • ESP8266-Generic
  • NodeMCU (v1 - v3)
  • Wemos D1
  • Wemos D1 mini
  • Programm für ESP8266

    /*|-------------------------------------------------|*/
    /*| RC CAR VOICE CONTROL VIA WEB INTERFACE          |*/
    /*| Webkit (GOOGLE) technology for voice-to-text    |*/
    /*| Author: Martin Chlebovec (martinius96)          |*/
    /*| LANGUAGE English - region US --> en-US          |*/
    /*| Revison: 21. Jan. 2020                          |*/
    /*| Arduino Core 2.5.0/2.5.2 compatible             |*/
    /*|-------------------------------------------------|*/
    #include <ESP8266WiFi.h>
    #include <WiFiClientSecure.h>
    const char * ssid = "WIFI_NAME";
    const char * password = "WIFI_PASS";
    const char * host = "arduino.php5.sk"; //yourdomain
    const int httpsPort = 443; //https port
    const char fingerprint[] PROGMEM = "b0 6d 7f 8c 98 78 8e 6e 0a 57 a8 2f 7e d1 40 2a 1e 3f 48 f7";
    void setup() {
      Serial.begin(115200);
      Serial.println();
      Serial.print("Connecting to WiFi: ");
      Serial.println(ssid);
      WiFi.begin(ssid, password);
      while (WiFi.status() != WL_CONNECTED) {
        delay(500);
        Serial.print(".");
      }
      Serial.println("");
      Serial.println("WiFi connected");
      Serial.println("IP address: ");
      Serial.println(WiFi.localIP());
    }
    void executed_command() {
      WiFiClientSecure client;
      Serial.printf("Using fingerprint '%s'\n", fingerprint);
      client.setFingerprint(fingerprint);
      if (client.connect(host, httpsPort)) {
        String url = "/php_car/command_executed.php";
        client.print(String("GET ") + url + " HTTP/1.0\r\n" + "Host: " + host + "\r\n" + "User-Agent: NodeMCU\r\n" + "Connection: close\r\n\r\n");
        Serial.println("Connection sucessful");
        Serial.println("Command executed to PHP service");
      } else {
        Serial.println("Error connecting to PHP service for verifying action");
      }
      client.stop();
    }
    void loop() {
      WiFiClientSecure client;
      Serial.printf("Using fingerprint '%s'\n", fingerprint);
      client.setFingerprint(fingerprint);
      if (client.connect(host, httpsPort)) {
        String url = "/php_car/translation.txt";
        client.print(String("GET ") + url + " HTTP/1.0\r\n" + "Host: " + host + "\r\n" + "User-Agent: NodeMCU\r\n" + "Connection: close\r\n\r\n");
        Serial.println("Connection sucessful");
        while (client.connected()) {
          String line = client.readStringUntil('\n');
          if (line == "\r") {
            break;
          }
        }
        String line = client.readStringUntil('\n');
        Serial.println("RC control command: ");
        Serial.println(line);
        if (line == "UP") { //if command == go UP
          Serial.println("Moving forward...");
          // PUT CODE FOR MOVE FORWARD THERE
          client.stop();
          executed_command();
        } else if (line == "DOWN") { //if command == go DOWN
          Serial.println("Moving backward...");
          // PUT CODE FOR MOVE BACKWARD THERE
          client.stop();
          executed_command();
        } else if (line == "LEFT") { //if command == TURN LEFT
          Serial.println("Turning left...");
          // PUT CODE FOR TURN LEFT THERE
          client.stop();
          executed_command();
        } else if (line == "RIGHT") { //if command == TURN RIGHT
          Serial.println("Turning right...");
          // PUT CODE FOR TURN RIGHT THERE
          client.stop();
          executed_command();
        } else if (line == "Last command executed by ESP8266. Waiting for new command.") { //if command == NO_MORE_COMMAND
          client.stop();
          Serial.println("No voice command set yet");
        } else {
          client.stop();
          Serial.println("This command is not suported");
          executed_command();
        }
      } else {
        Serial.println("Connection was not sucessful");
      }
      client.stop();
      delay(2000); // WAIT () miliseconds before next reading of variable
    }
    

    Program - ESP32

    /*|-------------------------------------------------|*/
    /*| RC CAR VOICE CONTROL VIA WEB INTERFACE          |*/
    /*| Webkit (GOOGLE) technology for voice-to-text    |*/
    /*| Author: Martin Chlebovec (martinius96)          |*/
    /*| LANGUAGE English - region US --> en-US          |*/
    /*| Revision: 22. Jan. 2020                         |*/
    /*| Arduino Core 1.0.1+                             |*/
    /*|-------------------------------------------------|*/
    #include <WiFi.h>
    #include <WiFiClientSecure.h>
    const char* ssid     =    "WIFI_NAME";
    const char* pass     =    "WIFI_PASS";
    const char* host     =    "arduino.php5.sk";
    const int httpsPort = 443; //http port
    //DIGICERT ROOT CA
    const char* test_root_ca = \
                               "-----BEGIN CERTIFICATE-----\n" \
                               "MIIEsTCCA5mgAwIBAgIQCKWiRs1LXIyD1wK0u6tTSTANBgkqhkiG9w0BAQsFADBh\n" \
                               "MQswCQYDVQQGEwJVUzEVMBMGA1UEChMMRGlnaUNlcnQgSW5jMRkwFwYDVQQLExB3\n" \
                               "d3cuZGlnaWNlcnQuY29tMSAwHgYDVQQDExdEaWdpQ2VydCBHbG9iYWwgUm9vdCBD\n" \
                               "QTAeFw0xNzExMDYxMjIzMzNaFw0yNzExMDYxMjIzMzNaMF4xCzAJBgNVBAYTAlVT\n" \
                               "MRUwEwYDVQQKEwxEaWdpQ2VydCBJbmMxGTAXBgNVBAsTEHd3dy5kaWdpY2VydC5j\n" \
                               "b20xHTAbBgNVBAMTFFJhcGlkU1NMIFJTQSBDQSAyMDE4MIIBIjANBgkqhkiG9w0B\n" \
                               "AQEFAAOCAQ8AMIIBCgKCAQEA5S2oihEo9nnpezoziDtx4WWLLCll/e0t1EYemE5n\n" \
                               "+MgP5viaHLy+VpHP+ndX5D18INIuuAV8wFq26KF5U0WNIZiQp6mLtIWjUeWDPA28\n" \
                               "OeyhTlj9TLk2beytbtFU6ypbpWUltmvY5V8ngspC7nFRNCjpfnDED2kRyJzO8yoK\n" \
                               "MFz4J4JE8N7NA1uJwUEFMUvHLs0scLoPZkKcewIRm1RV2AxmFQxJkdf7YN9Pckki\n" \
                               "f2Xgm3b48BZn0zf0qXsSeGu84ua9gwzjzI7tbTBjayTpT+/XpWuBVv6fvarI6bik\n" \
                               "KB859OSGQuw73XXgeuFwEPHTIRoUtkzu3/EQ+LtwznkkdQIDAQABo4IBZjCCAWIw\n" \
                               "HQYDVR0OBBYEFFPKF1n8a8ADIS8aruSqqByCVtp1MB8GA1UdIwQYMBaAFAPeUDVW\n" \
                               "0Uy7ZvCj4hsbw5eyPdFVMA4GA1UdDwEB/wQEAwIBhjAdBgNVHSUEFjAUBggrBgEF\n" \
                               "BQcDAQYIKwYBBQUHAwIwEgYDVR0TAQH/BAgwBgEB/wIBADA0BggrBgEFBQcBAQQo\n" \
                               "MCYwJAYIKwYBBQUHMAGGGGh0dHA6Ly9vY3NwLmRpZ2ljZXJ0LmNvbTBCBgNVHR8E\n" \
                               "OzA5MDegNaAzhjFodHRwOi8vY3JsMy5kaWdpY2VydC5jb20vRGlnaUNlcnRHbG9i\n" \
                               "YWxSb290Q0EuY3JsMGMGA1UdIARcMFowNwYJYIZIAYb9bAECMCowKAYIKwYBBQUH\n" \
                               "AgEWHGh0dHBzOi8vd3d3LmRpZ2ljZXJ0LmNvbS9DUFMwCwYJYIZIAYb9bAEBMAgG\n" \
                               "BmeBDAECATAIBgZngQwBAgIwDQYJKoZIhvcNAQELBQADggEBAH4jx/LKNW5ZklFc\n" \
                               "YWs8Ejbm0nyzKeZC2KOVYR7P8gevKyslWm4Xo4BSzKr235FsJ4aFt6yAiv1eY0tZ\n" \
                               "/ZN18bOGSGStoEc/JE4ocIzr8P5Mg11kRYHbmgYnr1Rxeki5mSeb39DGxTpJD4kG\n" \
                               "hs5lXNoo4conUiiJwKaqH7vh2baryd8pMISag83JUqyVGc2tWPpO0329/CWq2kry\n" \
                               "qv66OSMjwulUz0dXf4OHQasR7CNfIr+4KScc6ABlQ5RDF86PGeE6kdwSQkFiB/cQ\n" \
                               "ysNyq0jEDQTkfa2pjmuWtMCNbBnhFXBYejfubIhaUbEv2FOQB3dCav+FPg5eEveX\n" \
                               "TVyMnGo=\n" \
                               "-----END CERTIFICATE-----\n";
    WiFiClientSecure client;
    void setup() {
      Serial.begin(115200);
      delay(10);
      Serial.print("Connecting to ssid: ");
      Serial.println(ssid);
      WiFi.disconnect(true);
      WiFi.mode(WIFI_STA);
      WiFi.begin(ssid, pass);
      while (WiFi.waitForConnectResult() != WL_CONNECTED) {
        delay(500);
        Serial.print(".");
      }
      client.setCACert(test_root_ca);
      Serial.println("");
      Serial.println("WiFi uspesne pripojene");
      Serial.println("IP adresa: ");
      Serial.println(WiFi.localIP());
      Serial.println("Ready");
    }
    
    void translation() {
      if (client.connect(host, httpsPort)) {
        String url = "/php_car/translation.txt";
        client.print(String("GET ") + url + " HTTP/1.0\r\n" + "Host: " + host + "\r\n" + "User-Agent: ESP32\r\n" + "Connection: close\r\n\r\n");
        while (client.connected()) {
          String hlavicka = client.readStringUntil('\n');
          if (hlavicka == "\r") {
            break;
          }
        }
        String line = client.readStringUntil('\n');
        Serial.println(line);
        if (line == "UP") { //if command == go UP
          Serial.println("Moving forward...");
          // PUT CODE FOR MOVE FORWARD THERE
          client.stop();
          executed_command();
        } else if (line == "DOWN") { //if command == go DOWN
          Serial.println("Moving backward...");
          // PUT CODE FOR MOVE BACKWARD THERE
          client.stop();
          executed_command();
        } else if (line == "LEFT") { //if command == TURN LEFT
          Serial.println("Turning left...");
          // PUT CODE FOR TURN LEFT THERE
          client.stop();
          executed_command();
        } else if (line == "RIGHT") { //if command == TURN RIGHT
          Serial.println("Turning right...");
          client.stop();
          executed_command();
          // PUT CODE FOR TURN RIGHT THERE
        } else if (line == "Last command executed by ESP8266. Waiting for new command.") { //if command == NO_MORE_COMMAND
          Serial.println("No voice command set yet");
        }
      } else {
        Serial.println("Problem connecting to GET voice command");
      }
      client.stop();
    }
    
    void executed_command() {
      if (client.connect(host, httpsPort)) {
        Serial.println("RESET VOICE COMMAND SUCESSFUL");
        String url = "/php_car/command_executed.php";
        client.print(String("GET ") + url + " HTTP/1.0\r\n" + "Host: " + host + "\r\n" + "User-Agent: ESP32\r\n" + "Connection: close\r\n\r\n");
      } else {
        Serial.println("CONNECTION FAILED");
      }
      client.stop();
    }
    
    void loop() {
      while (WiFi.status() != WL_CONNECTED) {
        delay(500);
        Serial.print(".");
    
      }
      translation();
      delay(2000); // WAIT () miliseconds before next reading of variable
    }
    

    Program - Arduino + Ethernet Wiznet W5100

    /*|-------------------------------------------------|*/
    /*| RC CAR VOICE CONTROL VIA WEB INTERFACE          |*/
    /*| Webkit (GOOGLE) technology for voice-to-text    |*/
    /*| Author: Martin Chlebovec (martinius96)          |*/
    /*| LANGUAGE English - region US --> en-US          |*/
    /*| Revision: 21. Jan. 2020                         |*/
    /*|-------------------------------------------------|*/
    #include <SPI.h>
    #include <Ethernet.h>
    
    byte mac[] = { 0xAA, 0xBB, 0xCC, 0x81, 0x7B, 0x4A }; //fyzicka adresa MAC
    char* serverName = "www.arduino.php5.sk"; // webserver
    
    EthernetClient client;
    void setup() {
      Serial.begin(115200);
      if (Ethernet.begin(mac) == 0) {
        Serial.println("DHCP nepridelilo adresu, skusam so statickou...");
        Ethernet.begin(mac);
      }
      Serial.print("  DHCP assigned IP ");
      Serial.println(Ethernet.localIP());
    }
    void executed_command() {
      client.stop();
      if (client.connect(serverName, 80)) {
        client.println("GET /php_car/command_executed.php HTTP/1.0");
        client.println("Host: www.arduino.php5.sk");
        client.println("Connection: close");
        client.println();
      } else {
        Serial.println("Connection failed");
      }
      client.stop();
    }
    void loop() {
      if (Ethernet.begin(mac) == 0) {
        Serial.println("DHCP nepridelilo adresu, skusam so statickou...");
        Ethernet.begin(mac);
      }
      if (client.connect(serverName, 80)) {
        client.println("GET /php_car/translation.txt HTTP/1.0");
        client.println("Host: www.arduino.php5.sk");
        client.println("Connection: close");
        client.println();
        while (client.connected()) {
          String hlavicka = client.readStringUntil('\n');
          Serial.println(hlavicka);
          if (hlavicka == "\r") {
            break;
          }
        }
        String line = client.readStringUntil('\n');
        Serial.println("Command is:");
        Serial.println(line);
        if (line == "UP") { //if command == go UP
          Serial.println("Moving forward...");
          // PUT CODE FOR MOVE FORWARD THERE
          executed_command();
        } else if (line == "DOWN") { //if command == go DOWN
          Serial.println("Moving backward...");
          // PUT CODE FOR MOVE BACKWARD THERE
          executed_command();
        } else if (line == "LEFT") { //if command == TURN LEFT
          Serial.println("Turning left...");
          // PUT CODE FOR TURN LEFT THERE
          executed_command();
        } else if (line == "RIGHT") { //if command == TURN RIGHT
          Serial.println("Turning right...");
          // PUT CODE FOR TURN RIGHT THERE
          executed_command();
        } else if (line == "Last command executed by ESP8266. Waiting for new command.") { //if command == NO_MORE_COMMAND
          Serial.println("No voice command set yet");
        } else {
    
          Serial.println("This command is not suported");
          executed_command();
        }
      }
      else {
        Serial.println("Connection failed");
        Serial.println();
      }
      client.stop();
      delay(5000);
    }