Kontrol Relay melalui Internet menggunakan arduino dan esp8266

Bagaimana cara mengontrol rangkaian elektronik melalui internet? 
banyak cara yang digunakan untuk mengontrol rangkaian listrik melalui internet, salah satunya ialah dengan menggunakan modul esp8266 dan arduino. 

Alat dan Bahan yang dibutuhkan :
1. Arduino Uno
2. Modul Esp8266
3  Relay
4. kabel secukupnya
5, Android smartphone
6. Aplikasi android====> unduh di sini :Download Aplikasi

langkahnya :
1. Download terlebih dahulu Flash Download Tools dan Firmware ===>Download Firmware
2. Upload Sketch arduino nya di bawah ini

source code arduino :

     int ch_pd = 3;
int io0 = 2;

void setup() {
    pinMode(ch_pd, OUTPUT);
    pinMode(io0, OUTPUT);
    digitalWrite(io0,LOW);
    digitalWrite(ch_pd, LOW);
    delay(1000);
    digitalWrite(ch_pd, HIGH);
}

void loop() {
      //Biarkan Kosong saja  
}

3. susun rangkaian di bawah ini

4.Tancapkan Usb port arduino ke komputer

5. Extact file download tadi dan ikuti tutorial berikut ini 

6. sekarang firmware telah diperbaharui, sekarang ubah wiring diagram arduino menjadi seperti ini

7,kita buat channel di web ThingSpeak.com untuk mendapatkan Api Key dan Channel Id

ikuti tutorialnya di video berikut ini

8.apabila channel telah dibuat, copy paste channel Id dan Api Key tadi ke Notepad

9. setelah itu tambahakan Library Espduino buka software arduino lalu klik

    Sketch > Include Library > Add .ZIP Library...

10.lalu pilih file espduino.Zip yang tadi download, dan klik Open 

11.maka library espduino telah berhasil ditambahkan ke software arduino

12.silahkan copy paste source code di bawah ini ke arduino

esparduino.ino

#include <SoftwareSerial.h>
#include <espduino.h>
#include <rest.h>

SoftwareSerial espPort(10, 11);
ESP esp(&espPort, &Serial, 9);
REST rest(&esp);
boolean wifiConnected = false;

const int relay1 =  2;
const int relay2 =  3;
const int relay3 =  4;
const int relay4 =  5;

boolean data1 = false;
boolean data2 = false;
boolean data3 = false;
boolean data4 = false;
int loop_count = 0;

char response[266];
char buff[64];
String strId,strData,strCode;
String strData_Last1,strData_Last2,strData_Last3,strData_Last4;

void(* resetFunc) (void) = 0;

 void clearBuffer(void) {
       for (int i = 0;i<266;i++ ) {
         response[i]=0;
       }
}

void wifiCb(void* response)
{
  uint32_t status;
  RESPONSE res(response);

  if(res.getArgc() == 1) {
    res.popArgs((uint8_t*)&status, 4);
    if(status == STATION_GOT_IP) {
      Serial.println("TERHUBUNG KE WIFI");
     
      wifiConnected = true;
    } else {
      wifiConnected = false;
    }
    
  }
}

void setup() {
  pinMode(relay1, OUTPUT); 
  pinMode(relay2, OUTPUT);
  pinMode(relay3, OUTPUT);
  pinMode(relay4, OUTPUT);
  
  digitalWrite(relay1,HIGH);
  digitalWrite(relay2,HIGH);
  digitalWrite(relay3,HIGH);
  digitalWrite(relay4,HIGH);
  
  Serial.begin(9600);
  espPort.begin(19200);
  
  esp.enable();
  delay(500);
  esp.reset();
  delay(500);
  while(!esp.ready());

  Serial.println("ARDUINO: Setup client");
  if(!rest.begin("api.thingspeak.com")) {
    Serial.println("ARDUINO: Gagal Setup client");
    while(1);
  }

  Serial.println("ARDUINO: Menghubungkan dengan Wifi");
  esp.wifiCb.attach(&wifiCb);

  esp.wifiConnect("Andy182 Network","waipigratis");
  Serial.println("ARDUINO: System sudah siap!");
}

void loop() {
loop_start:  
  
  esp.process();  
  if(wifiConnected) {   
    
    char str_field1[6] , str_field2[6] , str_field3[6] , str_field4[6];
           
      sprintf(buff, "/channels/58419/fields/1/last");
      Serial.println(buff);
           
      rest.get((const char*)buff);
      if(rest.getResponse(response, 266) == HTTP_STATUS_OK){
                              
            strId = "";
            strData = "";
            strCode = "";  
            getData();                
                 
          if (strData == "1" || strData == "1.0" || strData == "1.00" ){
            digitalWrite(relay1,LOW);
            data1 = true;
          }
           
          if (strData == "0" || strData == "-1" || strData == "0.1" || strData == "0.10"){
            digitalWrite(relay1,HIGH);
            data1 = false;
          }
      }  
     else{  
       hardReset();
       resetFunc();
     }
     
      delay(10000);  
      sprintf(buff, "/channels/58419/fields/2/last");
      Serial.println(buff);
           
      rest.get((const char*)buff);
      if(rest.getResponse(response, 266) == HTTP_STATUS_OK){
         
        strId = "";  strData = "";  strCode = "";  
        getData();
      
      
      if (strData == "1" || strData == "1.0" || strData == "1.00"){
        digitalWrite(relay2,LOW);
        data2 = true;        
      }
       
      if (strData == "0" || strData == "-1" || strData == "0.1" || strData == "0.10"){
        digitalWrite(relay2,HIGH);
        data2 = false;      
      }     
      } 
      else{  
         hardReset();
         resetFunc(); 
         clearBuffer();  
         goto loop_start;   
       
     }    

      delay(10000);  
      sprintf(buff, "/channels/58419/fields/3/last");
      Serial.println(buff);
           
      rest.get((const char*)buff);
      if(rest.getResponse(response, 266) == HTTP_STATUS_OK){
         
        strId = "";  strData = "";  strCode = "";  
        getData();                                                // GET DATA
      
      
      if (strData == "1" || strData == "1.0" || strData == "1.00"){
        digitalWrite(relay3,LOW);
        data3 = true;        
      }
       
      if (strData == "0" || strData == "-1" || strData == "0.1" || strData == "0.10"){
        digitalWrite(relay3,HIGH);
        data3 = false;      
      }     
      } 
      else{  
         hardReset();
         resetFunc(); 
         clearBuffer();  
         goto loop_start;   
       
     } 

     delay(10000);  
      sprintf(buff, "/channels/58419/fields/4/last");              // field x last Data
      Serial.println(buff);
           
      rest.get((const char*)buff);
      if(rest.getResponse(response, 266) == HTTP_STATUS_OK){
         
        strId = "";  strData = "";  strCode = "";  
        getData();                                                // GET DATA
      
      
      if (strData == "1" || strData == "1.0" || strData == "1.00"){
        digitalWrite(relay4,LOW);
        data4 = true;        
      }
       
      if (strData == "0" || strData == "-1" || strData == "0.1" || strData == "0.10"){
        digitalWrite(relay4,HIGH);
        data4 = false;      
      }     
      } 
      else{  
         hardReset();
         resetFunc(); 
         clearBuffer();  
         goto loop_start;   
       
     } 
     
      delay(10000);      
      loop_count++;
      Serial.println("LOOP : ");
      Serial.println(loop_count);
      
      if(loop_count == 6 ){
        loop_count = 0;
      
      if(data1) {       
           dtostrf(1, 1, 1, str_field1);     
      }else{
         dtostrf(0.1, 2, 1, str_field1);    
      }
      if(data2) {
           dtostrf(1, 1, 1, str_field2);
      }else{
         dtostrf(0.1, 2, 1, str_field2);   
      }
      if(data3) {
           dtostrf(1, 1, 1, str_field3);
      }else{
         dtostrf(0.1, 2, 1, str_field3);   
      }
      if(data4) {
           dtostrf(1, 1, 1, str_field4);
      }else{
         dtostrf(0.1, 2, 1, str_field4);   
      }
        
          sprintf(buff, "//update?key=65OKK4T6SKM96AVO&field1=%s&field2=%s&field3=%s&field4=%s",str_field1,str_field2,str_field3,str_field4);
          Serial.println(buff);
           
          rest.get((const char*)buff);
          Serial.println("ARDUINO: Mengirim data terbaru");

          if(rest.getResponse(response, 266) == HTTP_STATUS_OK){
            Serial.println("ARDUINO: Berhasil GET Data");
            strId = "";  strData = "";  strCode = "";  
            getData();
          }
      delay(5000);
      }
  }
  
  else{
  }
  
}
  
void getData(){
   int i=0,j=0,k=0; 
     
         for (i = 0; i < 10; i++){         
        
          if((response[i] == '\r') || (response[i] == '\n')) { 
          }
          else{          
             strId += response[i];       
          }
          
          if (response[i] == '\n'){ 
               i++;         
               break;
          }                    
        }
        
        Serial.println("");
        Serial.print("ID : ");
        Serial.print(strId);
           
         for (j = i; j < (i+20); j++){
          
          if((response[j] == '\r') || (response[j] == '\n')) { 
          }
          else{          
             strData += response[j];       
          }
          
          if (response[j] == '\n'){ 
                j++;      
                break;
          }                     
        }
        
        Serial.println("");
        Serial.print("Data : ");
        Serial.print(strData);
         for (k = j; k < (j+10); k++){        
              
          if((response[k] == '\r') || (response[k] == '\n')) { 
          }
          else{          
             strCode += response[k];       
          }
          
          if (response[k] == '\n'){                       
                break;
          }                     
        }
        Serial.println("");
        Serial.print("Code : ");
        Serial.print(strCode);      
        Serial.println("");        
      }
  boolean hardReset() {
  String tmpData;
}

KETERANGAN SKETCH :

1.sketch berikut ini ubah dan sesuaikan dengan SSID dan Password anda

    

    esp.wifiConnect("Andy182 Network","waipigratis");

2.ubah setiap sketch di bawah ini sesuaikan dengan Channel Id thingspeak anda 

sprintf(buff, "/channels/58419/fields/1/last"); // untuk field 1
sprintf(buff, "/channels/58419/fields/2/last"); // untuk field 2
sprintf(buff, "/channels/58419/fields/3/last"); // untuk field 3
sprintf(buff, "/channels/58419/fields/4/last"); // untuk field 4

3. ubah dan sesuaikan dengan Api Key thingspeak anda

sprintf(buff, "//update?key=65OKK4T6SKM96AVO&field1=%s&field2=%s&field3=%s&field4=%s",str_field1,str_field2,str_field3,str_field4);

taraaaaa....selesai sudah tutorialnya semoga berhasil 

silahkan tonton video berikut ini