nodemecu/arduino_master_1/arduino_master_1.ino

#include <OneWire.h>
#include <DallasTemperature.h>
#define address 99               //default I2C ID number for EZO pH Circuit.


// SENSOR TEMPERATURA
// Pin donde se conecta el bus 1-Wire
const int pinDatosDQ = 2;
// Instancia a las clases OneWire y DallasTemperature
OneWire oneWireObjeto(pinDatosDQ);
DallasTemperature sensorDS18B20(&oneWireObjeto);
// Funcion que llama al sensor de temperatura
float getDataTemp() {
  sensorDS18B20.requestTemperatures();
  return (sensorDS18B20.getTempCByIndex(0));
}


// SENSOR TURBIDEZ
// Funcion que llama al sensor de turbidez
int getDataTur() {
  int sensorValue = analogRead(A7);
  return (map(sensorValue, 0, 700, 100, 0));
}

//



char devIDstr[5];
int inQuery;


void setup() {
  Serial.begin(9600);
  // Sensor temperatura
  sensorDS18B20.begin();
}

void loop() {

  if ( Serial.available() > 0) {
    inQuery = Serial.read();

    switch (inQuery) {

      case 1:
        Serial.write("1");
        Serial.write(" ");
        Serial.write("T");
        Serial.write(" ");
        Serial.write("00");
        Serial.write("");
        Serial.write("C");
        Serial.write(" ");
        Serial.write("99");

        break;
      case 2:
        Serial.write("2");
        Serial.write(" ");
        Serial.write("Tur");
        Serial.write(" ");
        Serial.write("123");
        Serial.write("");
        Serial.write("TSS");
        Serial.write(" ");
        Serial.write("99");

        break;
      case 3:
        Serial.write("3");
        Serial.write(" ");
        Serial.write("Con");
        Serial.write(" ");
        Serial.write("97");
        Serial.write("");
        Serial.write("Con");
        Serial.write(" ");
        Serial.write("99");

        break;

      case 4:
        Serial.write("4");
        Serial.write(" ");
        Serial.write("Ph");
        Serial.write(" ");
        Serial.write("98");
        Serial.write("");
        Serial.write("Ph");
        Serial.write(" ");
        Serial.write("99");


        break;
      default:
        ;

    }
  }
  delay(100);
}