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Exemple de fichier Arduino pour 5 capteurs:
- 1 capteur multicanaux, I2C (4 capteurs)
- 1 capteur O2, analogique
- 1 capteur CO2 MH-Z19B, UART (+ température intégrée)
- 1 thermocouple, lecture analogique
- 1 sonde de température Onewire, numérique.

Exemple_code_Arduino.ino

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+/*****************************************************************************************************************************
+  Auteur : FDES et LilianRM
+  Pour LowTech Bordeaux
+ *****************************************************************************************************************************/
+
+// setup des librairies et des variables globales
+
+#include <Arduino.h>
+
+#include <High_Temp.h>
+#include <OneWire.h>
+#include <DallasTemperature.h>
+#include <Multichannel_Gas_GMXXX.h>
+#include <Wire.h>
+GAS_GMXXX<TwoWire> gas;
+#include <SoftwareSerial.h>
+#include <MHZ.h>
+
+int MHZ19B_PREHEATING_TIME = 3 * 60;
+
+#define O2_WIRE A2
+#define ONE_WIRE_BUS 2
+
+HighTemp ht(A1, A0);
+OneWire oneWire(ONE_WIRE_BUS);
+DallasTemperature dallasTemp(&oneWire);
+uint8_t tempAddress[8] = {0x28,0x46,0xBF,0x31,0x08,0,0,0x1B};
+
+char data_sent[100];
+char incomingInt;
+String data_string;
+
+MHZ co2capt(4,5, MHZ19B); // RX, TX, type
+
+// fonctions de conversion
+
+int Float2Int(float number){
+  return (int)number/1;
+}
+
+int Coma2Int(float number, int nbAfterComa){
+  number = number - (int)number;
+  if(number < 0){
+    return (int)((-number)*pow(10, nbAfterComa)/1);
+  }else{
+    return (int)(number*pow(10, nbAfterComa)/1);
+  }
+}
+
+
+void setup() // setup des capteurs
+{    
+    delay(20000);
+    for(int i = 0;i<10;i++){
+      co2capt.calibrate400ppm();
+      delay(10);
+    }
+    gas.begin(Wire, 0x08); // use the hardware I2C
+    ht.begin();
+    dallasTemp.begin();
+    dallasTemp.setResolution(12);
+    delay(10000);
+    Serial.begin(9600);
+    delay(20);
+    Serial.println('0');
+}
+
+void loop() {  
+  if(Serial.available() > 0){ // wait for serial to have data
+    incomingInt = Serial.read() - '0';
+    if(incomingInt == 1){ // read data from captors and construct string
+      Serial.flush();
+      
+      // GM102B NO2 sensor
+      int val102 = gas.getGM102B();
+      // GM102B alcool? sensor
+      int val302 = gas.getGM302B();
+      // GM502B VOC sensor
+      int val502 = gas.getGM502B();
+      // GM702B CO sensor
+      int val702 = gas.getGM702B();
+      
+      int valOxygen = analogRead(O2_WIRE);
+      
+      int gazco2ppm = co2capt.readCO2UART();
+      int tempco2ppm = co2capt.getLastTemperature();
+      
+      float thermoCpl = ht.getThmc();
+      
+      dallasTemp.requestTemperatures();
+      int onewireTemp = dallasTemp.getTemp(tempAddress);
+      
+      data_string = String(valOxygen) + ","
+                  + String(val102) + "," 
+                  + String(val302) + "," 
+                  + String(val502) + "," 
+                  + String(val702) + ","
+                  + String(gazco2ppm) + ","
+                  + String(tempco2ppm) + ","
+                  + String(Float2Int(thermoCpl)) + "." + String(Coma2Int(thermoCpl,1)) + "," 
+                  + String(Float2Int(onewireTemp));
+      data_string.toCharArray(data_sent, 100);
+      
+      
+    }else if(incomingInt == 2){ // send data
+    
+      delay(10);
+      Serial.flush();
+      Serial.println(data_sent);
+      
+    }else if(incomingInt == 0){ // send ready signal
+      Serial.flush();
+      Serial.println('0');
+        
+    }else{
+      Serial.flush();
+    }
+  }
+}