diff --git a/.vscode/ipch/3cd6c8ea04e31405/NONISO.ipch b/.vscode/ipch/3cd6c8ea04e31405/NONISO.ipch
new file mode 100644
index 0000000..4e48b23
Binary files /dev/null and b/.vscode/ipch/3cd6c8ea04e31405/NONISO.ipch differ
diff --git a/.vscode/ipch/3cd6c8ea04e31405/mmap_address.bin b/.vscode/ipch/3cd6c8ea04e31405/mmap_address.bin
new file mode 100644
index 0000000..862b842
Binary files /dev/null and b/.vscode/ipch/3cd6c8ea04e31405/mmap_address.bin differ
diff --git a/.vscode/ipch/5850c245ea8d5616/mmap_address.bin b/.vscode/ipch/5850c245ea8d5616/mmap_address.bin
new file mode 100644
index 0000000..862b842
Binary files /dev/null and b/.vscode/ipch/5850c245ea8d5616/mmap_address.bin differ
diff --git a/src/MQUnifiedsensor.cpp b/src/MQUnifiedsensor.cpp
index 948fbea..cfc3df4 100644
--- a/src/MQUnifiedsensor.cpp
+++ b/src/MQUnifiedsensor.cpp
@@ -97,70 +97,21 @@ void MQUnifiedsensor::setSensorCharacteristics(String nameLectureRequeired, bool
   //Defaults index
   if(nameLectureRequeired == "")
   {
-    Serial.println("Busqueda manual de los indices");
-    if(_type == 2)
-    {
-      _lecturePosInArray = defaultMQ2;
-    }
-    else if(_type == 3)
-    {
-      _lecturePosInArray = defaultMQ3;
-    }
-    else if(_type == 4)
-    {
-      _lecturePosInArray = defaultMQ4;
-    }
-    else if(_type == 5)
-    {
-      _lecturePosInArray = defaultMQ5;
-    }
-    else if(_type == 6)
-    {
-      _lecturePosInArray = defaultMQ6;
-    }
-    else if(_type == 7)
-    {
-      _lecturePosInArray = defaultMQ7;
-    }
-    else if(_type == 8)
-    {
-      _lecturePosInArray = defaultMQ8;
-    }
-    else if(_type == 9)
-    {
-      _lecturePosInArray = defaultMQ9;
-    }
-    else if(_type == 131)
-    {
-      _lecturePosInArray = defaultMQ131;
-    }
-    else if(_type == 135)
-    {
-      _lecturePosInArray = defaultMQ135;
-    }
-    else if(_type == 303)
-    {
-      _lecturePosInArray = defaultMQ303;
-    }
-    else if(_type == 309)
-    {
-      _lecturePosInArray = defaultMQ309;
-    }
+    
   }
-  else 
+
+  //Dinamic index search
+  if(print)
   {
-    //Dinamic index search
-    if(print)
-    {
-      Serial.println("Busqueda dinamica de los indices");
-    }
-    for (int i=0; i<lecturesAvailable; i++) {
-        if (nameLectureRequeired = nameLecture[i]) {    //modified here
-          _lecturePosInArray = i;
-          break;
-        }
-      }
+    Serial.println("Busqueda dinamica de los indices");
   }
+  for (int i=0; i<sizeof(_MQ); i++) {
+      if (nameLectureRequeired = _MQ[i]) {    //modified here
+        _lecturePosInArray = i;
+        break;
+      }
+    }
+  
   //Serial debugging
   if(print)
   {
@@ -169,12 +120,12 @@ void MQUnifiedsensor::setSensorCharacteristics(String nameLectureRequeired, bool
     Serial.print("index in nameLectures: ");
     Serial.println(_lecturePosInArray);
     Serial.print("Slope index: ");
-    Serial.println(indexSlopeLectures[_lecturePosInArray]);
+    Serial.println(_lecturePosInArray+1);
     Serial.print("B point index: ");
-    Serial.println(indexBPointLectures[_lecturePosInArray]);
+    Serial.println(_lecturePosInArray+2);
   }
-  _m = _MQ[indexSlopeLectures[_lecturePosInArray]];
-  _b = _MQ[indexBPointLectures[_lecturePosInArray]];
+  _m = stringToDouble(_MQ[_lecturePosInArray+1]);
+  _b = stringToDouble(_MQ[_lecturePosInArray+2]);
 }
 int MQUnifiedsensor::readPPM(int m, int b) {
   /**
@@ -215,4 +166,60 @@ double MQUnifiedsensor::getVoltage() {
 }
 void MQUnifiedsensor::setR0(double R0) {
   this->_R0 = R0;
+}
+void MQUnifiedsensor::setDefaultGas()
+{
+  Serial.println("Carga de los gases por defecto");
+    if(_type == 2)
+    {
+      nameLectureRequeired = defaultMQ2;
+    }
+    else if(_type == 3)
+    {
+      nameLectureRequeired = defaultMQ3;
+    }
+    else if(_type == 4)
+    {
+      nameLectureRequeired = defaultMQ4;
+    }
+    else if(_type == 5)
+    {
+      nameLectureRequeired = defaultMQ5;
+    }
+    else if(_type == 6)
+    {
+      nameLectureRequeired = defaultMQ6;
+    }
+    else if(_type == 7)
+    {
+      nameLectureRequeired = defaultMQ7;
+    }
+    else if(_type == 8)
+    {
+      nameLectureRequeired = defaultMQ8;
+    }
+    else if(_type == 9)
+    {
+      nameLectureRequeired = defaultMQ9;
+    }
+    else if(_type == 131)
+    {
+      nameLectureRequeired = defaultMQ131;
+    }
+    else if(_type == 135)
+    {
+      nameLectureRequeired = defaultMQ135;
+    }
+    else if(_type == 303)
+    {
+      nameLectureRequeired = defaultMQ303;
+    }
+    else if(_type == 309)
+    {
+      nameLectureRequeired = defaultMQ309;
+    }
+}
+double MQUnifiedsensor::stringToDouble(String & str)   <-- notice the "&"
+{
+  return atof( str.c_str() );
 }
\ No newline at end of file
diff --git a/src/MQUnifiedsensor.h b/src/MQUnifiedsensor.h
index db79161..a06b082 100644
--- a/src/MQUnifiedsensor.h
+++ b/src/MQUnifiedsensor.h
@@ -8,18 +8,18 @@
 #define lecturesAvailable 19
 
 //Index in the nameLecture vector
-#define defaultMQ2 2 // LPG
-#define defaultMQ3 5 // Alcohol
-#define defaultMQ4 3 // CH4
-#define defaultMQ5 0 //H2 
-#define defaultMQ6 3 // CH4
-#define defaultMQ7 4 //CO
-#define defaultMQ8 0 //H2 
-#define defaultMQ9 2 // LPG
-#define defaultMQ131 12 //O3
-#define defaultMQ135 15 //NH4
-#define defaultMQ303 17 //Isobutano
-#define defaultMQ309 4 //CO
+#define defaultMQ2 "LPG" // LPG
+#define defaultMQ3 "Alcohol" // Alcohol
+#define defaultMQ4 "CH4" // CH4
+#define defaultMQ5 "H2" //H2 
+#define defaultMQ6 "CH4" // CH4
+#define defaultMQ7 "CO" //CO
+#define defaultMQ8 "H2" //H2 
+#define defaultMQ9 "LPG" // LPG
+#define defaultMQ131 "O3" //O3
+#define defaultMQ135 "NH4" //NH4
+#define defaultMQ303 "Isobutano" //Isobutano
+#define defaultMQ309 "CO" //CO
 
 
 class MQUnifiedsensor
@@ -29,12 +29,14 @@ class MQUnifiedsensor
     void inicializar();
     void setR0(double R0);
     void setSensorCharacteristics(String nameLectureReqeuired, bool print);
+    void setDefaultGas();
     
     int readSensor(String nameLectureRequeired = "", bool print = false);
     int readPPM(int m, int b);
     
     double calibrate();
     double getVoltage();
+    double stringToDouble(String & str);
 
     String getnameLecture();
 
@@ -56,7 +58,8 @@ class MQUnifiedsensor
     
   private:
     int _pin, _type, _PPM, _lecturePosInArray;
-    double _R0, _m, _b, _MQ[12];
+    double _R0, _m, _b;
+    String _MQ[19];
     const float VOLT_RESOLUTION = 5.0; // if 3.3v use 3.3
     const int ADC_RESOLUTION = 10; // for 10bit analog to digital converter.
     const int retries = 50;