Kontrol AC (Air Conditioners) Menggunakan IR Remote dan NodeMCU

  Tutorial kali ini akan membahas mengenai penggunaan sensor IR (infrared) untuk mengontrol AC / pendingin udara menggunakan jaringan internet. Masalah yang sering terjadi pada penggunaan AC adalah lupa untuk mematikannya yang mengakibatkan tunggakan listrik tiap bulan membengkak. Dengan adanya alat yang akan dibuat ini akan menjawab permasalah tersebut, karena kita bisa mengontrol kapan dan dari mana saja. Kontroler yang kita pakai adalah NodeMCU yang terhubung dengan jaringan WiFi. Untuk transmitter menggunakan IR LED (led inframerah), dan receiver tentunya AC sebagai objek yang akan kita kontrol. Lebih rincinya alat dan bahan yang diperlukan sebagai berikut :

• NodeMCU v3 Ch340, BELI
• IR LED transmitter, BELI
• Resistor 330 Ohm, BELI
• Transistor BC547, BELI
• Library IrRemoteEsp8266, download.

Catatan : untuk tahap pembelajaran, alat ini masih menggunakan jaringan WIFI local.

Rangkaian

Keterangan :

• PIN_OUT ke pin D2 NodeMCU
• Sumber 5v dari Pin VV NodeMCU
• GND ke GND

Rangkai sesuai gambar di atas. Selanjutnya buka Arduino IDE dan masukkan library IRemoteEsp8266 yang sudah didownload. Buka menu File > Examples > IRemoteESP8266 > pilih merk AC yang digunakan. Di sini menggunakan merk DAIKIN > pilih TurnOnDaikinAC. Silahkan upload sketch program tersebut sampai Done uploading. Ini merupakan percobaan menghidupkan AC secara langsung terlebih dahulu untuk memastikan IR berfungsi. Arahkan led IR ke AC jika berhasil maka AC akan menyala. Berikut ini merupakan perintah umum yang digunakan pada AC DAIKIN Dari contoh sketch program di atas kita masukkan beberapa perintah yang kita inginkan pada web interface misalnya berupa button. Sketch programnya di bawah ini :

#include <Arduino.h>
#include <ESP8266WiFi.h>
#include <WiFiClient.h>
#include <ESP8266WebServer.h>
#include <ESP8266mDNS.h>
#include <IRsend.h>
#include <ir_Daikin.h>

// Add this library: https://github.com/markszabo/IRremoteESP8266
#include <IRremoteESP8266.h>

#define DELAY_BETWEEN_COMMANDS 1000

const uint16_t kIrLed = 4;  // ESP8266 GPIO pin to use. Recommended: 4 (D2).
IRDaikinESP ac(kIrLed);

const char* ssid = "Indomaker";
const char* password = "cahbarongan";

ESP8266WebServer server(80);

const int led = BUILTIN_LED;

String rowDiv = "    <div class=\"row\" style=\"padding-bottom:1em\">\n";
String endDiv = "    </div>\n";

// Buttons are using the bootstrap grid for sizing - http://getbootstrap.com/css/#grid
String generateButton(String colSize, String id, String text, String url) {

  return  "<div class=\"" + colSize + "\" style=\"text-align: center\">\n" +
          "    <button id=\"" + id + "\" type=\"button\" class=\"btn btn-default\" style=\"width: 100%\" onclick='makeAjaxCall(\"" + url + "\")'>" + text + "</button>\n" +
          "</div>\n";
}

void handleRoot() {
  digitalWrite(led, 0);
  String website = "<!DOCTYPE html>\n";
  website = website + "<html>\n";
  website = website + "  <head>\n";
  website = website + "    <meta charset=\"utf-8\">\n";
  website = website + "    <meta http-equiv=\"X-UA-Compatible\" content=\"IE=edge\">\n";
  website = website + "    <meta name=\"viewport\" content=\"width=device-width, initial-scale=1\">\n";
  website = website + "    <link rel=\"stylesheet\" href=\"https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css\">\n";
  website = website + "  </head>\n";
  website = website + "  <body>\n";
  website = website + "    <div class=\"container-fluid\">\n";
  // ------------------------- Power Controls --------------------------
  website = website + rowDiv;
  website = website + generateButton("col-xs-4", "acpower", "AC Power ON", "acpower");
  website = website + generateButton("col-xs-4", "poweroff", "AC Power OFF", "poweroff");
  website = website + generateButton("col-xs-4", "satpower", "Sat Power", "satpower");
  website = website + endDiv;
  // ------------------------- Channel Controls --------------------------
  website = website + rowDiv;
  website = website + generateButton("col-xs-3", "sschannel1", "1", "sschannel1");
  website = website + generateButton("col-xs-3", "sschannel2", "2", "sschannel2");
  //website = website + generateButton("col-xs-3", "sschannel3","---", "sschannel3");
  website = website + generateButton("col-xs-3", "sschannel4", "3", "sschannel4");
  website = website + generateButton("col-xs-3", "sstvsound", "TVS", "sstvsound");
  website = website + endDiv;
  // ------------------------- Volume Controls --------------------------
  website = website + rowDiv;
  website = website + generateButton("col-xs-12", "up", "Vol Up", "up");
  website = website + endDiv;
  website = website + rowDiv;
  website = website + generateButton("col-xs-12", "down", "Vol Down", "down");
  website = website + endDiv;
  // ------------------------- Satelite Controls --------------------------
  // Not working well
  //  website = website + rowDiv;
  //  website = website + generateButton("col-xs-offset-4 col-xs-4", "satup","Sat Up", "satup");
  //  website = website + generateButton("col-xs-4", "satblue","Sat Blue", "satblue");
  //  website = website + endDiv;
  //  website = website + rowDiv;
  //  website = website + generateButton("col-xs-4", "satexit","Sat Exit", "satexit");
  //  website = website + generateButton("col-xs-4", "satdown","Sat Down", "satdown");
  //  website = website + generateButton("col-xs-4", "satok","Sat Ok", "satok");
  //  website = website + endDiv;
  // ------------------------- Chromecast --------------------------
  website = website + rowDiv;
  website = website + generateButton("col-xs-12", "chromecast", "Chromecast", "chromecast");
  website = website + endDiv;
  website = website + rowDiv;
  website = website + generateButton("col-xs-12", "togglesource", "TV Source", "togglesource");
  website = website + endDiv;
  website = website + endDiv;
  website = website + "    <script src=\"https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js\"></script>\n";
  website = website + "    <script src=\"https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js\"></script>\n";
  website = website + "    <script> function makeAjaxCall(url){$.ajax({\"url\": url})}</script>\n";
  website = website + "  </body>\n";
  website = website + "</html>\n";

  server.send(200, "text/html", website);
  digitalWrite(led, 1);
}

void handleNotFound() {
  digitalWrite(led, 1);
  String message = "File Not Found\n\n";
  message += "URI: ";
  message += server.uri();
  message += "\nMethod: ";
  message += (server.method() == HTTP_GET) ? "GET" : "POST";
  message += "\nArguments: ";
  message += server.args();
  message += "\n";
  for (uint8_t i = 0; i < server.args(); i++) {
    message += " " + server.argName(i) + ": " + server.arg(i) + "\n";
  }
  server.send(404, "text/plain", message);
  digitalWrite(led, 1);
}

void setup(void) {
  ac.begin();
  pinMode(led, OUTPUT);
  digitalWrite(led, 1);
  Serial.begin(115200);
  WiFi.begin(ssid, password);
  Serial.println("");

  // Wait for connection
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.print("Connected to ");
  Serial.println(ssid);
  Serial.print("IP address: ");
  Serial.println(WiFi.localIP());

  if (MDNS.begin("esp8266")) {
    Serial.println("MDNS Responder Started");
  }

  server.on("/", handleRoot);

  server.on("/acpower", []() {
    Serial.println("AC power");
    ac.on();
    ac.setFan(1);
    ac.setMode(kDaikinCool);
#if SEND_DAIKIN
    ac.send();
#endif  // SEND_DAIKIN
    server.send(200, "text/plain", "AC Power");
  });

  server.on("/poweroff", []() {
    Serial.println("Power Off");
    ac.off();
#if SEND_DAIKIN
    ac.send();
#endif  // SEND_DAIKIN
    server.send(200, "text/plain", "Power Off");
  });

  server.on("/sstvsound", []() {
    Serial.println("Surround Sound sstvsound");
    //perintah
    //.....
    server.send(200, "text/plain", "Surround Sound sstvsound");
  });
  
  server.on("/down", []() {
    Serial.println("Sorround Sound Down");
    //irsend.sendNEC(0x4BB6C03F, 32);
    server.send(200, "text/plain", "Volume Down");
  });

  server.on("/up", []() {
    Serial.println("Surround Sound Up");
    //irsend.sendNEC(0x4BB640BF, 32);
    server.send(200, "text/plain", "Volume Up");
  });

  server.on("/sschannel1", []() {
    Serial.println("Surround Sound Channel 1");
    //irsend.sendNEC(0x10, 32);
    server.send(200, "text/plain", "Surround Sound Channel 1");
  });

  server.on("/sschannel2", []() {
    Serial.println("Surround Sound Channel 2");
    //irsend.sendNEC(0x810, 32);
    server.send(200, "text/plain", "Surround Sound Channel 2");
  });

  server.on("/sschannel3", []() {
    Serial.println("Surround Sound Channel 3");
    //irsend.sendNEC(0x4BB6708F, 32);
    server.send(200, "text/plain", "Surround Sound Channel 3");
  });

  server.on("/sschannel4", []() {
    Serial.println("Surround Sound Channel 4");
    //irsend.sendNEC(0x410, 32);
    server.send(200, "text/plain", "Surround Sound Channel 4");
  });

  server.on("/tvsource", []() {
    Serial.println("TV Source");
    //irsend.sendNEC(0x20DFD02F, 32);
    server.send(200, "text/plain", "TV Source");
  });

  server.on("/togglesource", []() {
    Serial.println("TV Source");
    //irsend.sendNEC(0x20DFD02F, 32);
    //delay(DELAY_BETWEEN_COMMANDS);
    //irsend.sendNEC(0x20DFD02F, 32);
    server.send(200, "text/plain", "TV Source");
  });

  server.on("/satpower", []() {
    Serial.println("Sat Power");
    //irsend.sendNEC(0xA25D7887, 32);
    server.send(200, "text/plain", "Sat Power");
  });

  server.on("/satok", []() {
    Serial.println("Sat Ok");
    //irsend.sendNEC(0xA25DFA05, 32);
    server.send(200, "text/plain", "Sat OK");
  });

  server.on("/satexit", []() {
    Serial.println("Sat Exit");
    //irsend.sendNEC(0xA25D06F9, 32);
    server.send(200, "text/plain", "Sat Exit");
  });

  server.on("/satup", []() {
    Serial.println("Sat UP");
    //irsend.sendNEC(0xA25DC03F, 32);
    server.send(200, "text/plain", "Sat UP");
  });

  server.on("/satdown", []() {
    Serial.println("Sat Down");
    //irsend.sendNEC(0xA25D7A85, 32);
    server.send(200, "text/plain", "Sat Down");
  });

  server.on("/satblue", []() {
    Serial.println("Sat Blue");
    //irsend.sendNEC(0xA25D52AD, 32);
    server.send(200, "text/plain", "Sat Blue");
  });

  server.on("/chromecast", []() {
    Serial.println("Chromecast");
    //irsend.sendNEC(0x20DFD02F, 32);
    //delay(DELAY_BETWEEN_COMMANDS);
    //irsend.sendNEC(0x20DFD02F, 32);
    //delay(DELAY_BETWEEN_COMMANDS);
    //irsend.sendNEC(0x4BB6906F, 32);
    server.send(200, "text/plain", "Chromecast");
  });

  server.onNotFound(handleNotFound);

  server.begin();
  Serial.println("HTTP Server Started");
}

void loop(void) {
  server.handleClient();
}

Hasil tampilannya berikut ini…

Selanjutnya silahkan coba dengan menekan ON/OFF jangan lupa untuk mengarahkan IR LED ke object. Semoga berhasil.