diff --git a/multidetecteur.ino b/multidetecteur.ino
new file mode 100644
index 0000000..e74a167
--- /dev/null
+++ b/multidetecteur.ino
@@ -0,0 +1,249 @@
+#include <LiquidCrystal_I2C.h>
+#include <DHT.h>
+
+#define DHTPIN 10
+#define DHTTYPE DHT22
+#define LOG_PERIOD 60000  // cetak tiap detik
+
+DHT dht(DHTPIN, DHTTYPE);
+struct
+{
+  uint32_t total;
+  uint32_t ok;
+  uint32_t crc_error;
+  
+  uint32_t time_out;
+  uint32_t unknown;
+} stat = { 0,0,0,0,0 };
+
+//  Identificateur pour l'affichage
+const int UV = 0;
+const int TEMP = 1;
+const int HUMID = 2;
+const int RAD = 3;
+const int BATTERY = 4;
+const int PARTICULES = 5;
+
+//  Buttons Pins
+const int BSELECT = 4;
+const int BUP = 2;
+const int BDOWN = 5;
+const int TEMP_HUMID = 6;
+
+int posaffich = 0;  // position actuelle de l'affichage
+int max_posaffich = 5; // nombre de valeur à afficher moins 1
+int UVOUT = A0; //Output from the sensor
+int REF_3V3 = A1; //3.3V power on the Arduino board
+//int UVsensorIn = A0; //Output from the sensor
+//int REFsensorIn = A1;
+LiquidCrystal_I2C lcd(0x27,8,2);
+
+byte bouton;
+unsigned long counts; //variable for GM Tube events
+unsigned long previousMillis;//variable for time measurement
+String texts[6]= {"UV int:", "Temp", "Humid", "Bq/mn", "Part/s", "Battery"};
+float values[6];
+void impulse() { // dipanggil setiap ada sinyal FALLING di pin 2
+    counts++;
+}
+
+void setup()
+{
+  pinMode(UVOUT, INPUT);
+  pinMode(REF_3V3, INPUT);
+  pinMode(BSELECT, INPUT_PULLUP);
+  pinMode(BUP, INPUT_PULLUP);
+  pinMode(BDOWN, INPUT_PULLUP);
+  pinMode(TEMP_HUMID, INPUT);   
+
+  attachInterrupt(digitalPinToInterrupt(3), impulse, FALLING); //define external interrupts 
+  Serial.println("Start counter");
+//  pinMode(UVsensorIn, INPUT);
+//  pinMode(REFsensorIn, INPUT);
+  Serial.begin(9600); //open serial port, set the baud rate to 9600 bps
+  dht.begin();
+  lcd.init();
+  lcd.init();
+  lcd.setCursor(0,0);
+  lcd.clear();
+  lcd.print("hello");
+  delay(1000); 
+}
+ 
+void loop()
+{
+  bouton = test_bouton(); //retourne la valeur entre 
+  Serial.print( "position afficheur =>" );
+  Serial.print( posaffich );
+  Serial.println();
+  lcd.clear();
+
+  values[UV] = uv();
+  values[TEMP] = temp();
+  values[HUMID] = humid();
+  values[RAD] = geiger();
+  values[PARTICULES] = particules();
+  values[BATTERY] = battery();
+  affich();
+  delay(200);
+}  
+
+void affich()
+{
+  Serial.print( "position afficheur => " );
+  Serial.print( posaffich );
+  Serial.println();
+  
+  lcd.clear();
+  Serial.print( "texte => ");
+  Serial.print( texts[posaffich] );
+  Serial.println();
+  lcd.setCursor(0,0);
+  lcd.print(texts[posaffich]);
+  lcd.setCursor(0,1);
+  lcd.print(values[posaffich]);
+}
+
+float uv()
+{
+  float uvLevel = averageAnalogRead(UVOUT);
+  float refLevel = averageAnalogRead(REF_3V3);
+//  int uvLevel = averageAnalogRead(UVsensorIn);
+//  int refLevel = averageAnalogRead(REFsensorIn);
+//  Serial.print(" Ulevel: ");
+//  Serial.print(uvLevel);
+//  Serial.print(" reflevel"); 
+  
+//  Serial.print(refLevel);
+  float outputVoltage = 3.3 * uvLevel/refLevel;
+//  Serial.print(" output voltage: ");
+//  Serial.print(outputVoltage);
+  
+  float uvIntensity = mapfloat(outputVoltage, 0.97, 2.9, 0.0, 15.0);
+
+  Serial.print(" UV Intensity: ");
+  Serial.print(uvIntensity);
+//  Serial.print(" mW/cm^2"); 
+//  Serial.print(" input:");
+//  Serial.print(uvLevel);
+  Serial.println(); 
+  return uvIntensity;
+  
+}               
+ 
+//Takes an average of readings on a given pin
+//Returns the average
+int averageAnalogRead(int pinToRead)
+{
+  byte numberOfReadings = 20;
+  float runningValue = 0;
+  float Value = 0;
+  for(int x = 0 ; x < numberOfReadings ; x++)
+  {
+    float val = analogRead(pinToRead);
+    runningValue += val;
+  }
+  Value = runningValue / (float)numberOfReadings;
+  return Value;
+}
+
+float mapfloat(float x, float in_min, float in_max, float out_min, float out_max)
+{
+  return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min;
+}
+
+byte test_bouton()
+{
+  
+  if ( digitalRead( BSELECT ) == 0)
+  {
+      // put here the code if select button is pushed
+      Serial.print( "SELECT" );
+      Serial.println();
+      return BSELECT;
+  }else if ( digitalRead( BUP ) == 0 )
+  {
+      // code for button up pushed
+      Serial.print( "UP" );
+      Serial.println();
+      if ( posaffich == 0 )
+      {
+          posaffich = max_posaffich;
+      }else
+      {
+          posaffich--;
+      }
+      return BUP;
+  }else if ( digitalRead( BDOWN ) == 0 )
+  {
+      // code for button down pushed
+      Serial.print( "Down" );
+      Serial.println();
+      if ( posaffich == max_posaffich )
+      {
+          posaffich = 0;
+      }else
+      {
+          posaffich++;
+      }
+      return BDOWN;
+  }
+  return 0;
+}
+
+float temp()
+{
+    uint32_t start = micros();
+    float t = dht.readTemperature();
+    uint32_t stop = micros();
+
+    stat.total++;
+    if (isnan(t)) {
+      Serial.println("Failed to read temperature from DHT");
+      return -199;
+    } else {
+      return t;
+    }
+}
+
+float humid()
+{
+    uint32_t start = micros();
+    float h = dht.readHumidity();
+    uint32_t stop = micros();
+
+    stat.total++;
+    if (isnan(h)) {
+      Serial.println("Failed to read humidity from DHT");
+      return -1;
+    } else {
+      return h; 
+    }
+  
+}
+
+float geiger()
+{
+  //here the code for acquiring radiations
+  //affich(RAD, text, value);
+  unsigned long currentMillis = millis();
+  if (currentMillis - previousMillis > LOG_PERIOD) {
+        previousMillis = currentMillis;
+        Serial.println(counts);
+        return counts; // affiche le nombre de particules comptées en une minute
+        counts = 0;
+   }
+}
+
+float particules()
+{
+  //here the code for acquiring particules
+  //affich(PARTICULES, text, value);
+}
+
+float battery()
+{
+  //here the code for acquiring battery
+  //affich(BATTERY, text, value);
+}
+