diff --git a/Datalogger.ino b/Datalogger.ino
index bb8cfd9..99504aa 100644
--- a/Datalogger.ino
+++ b/Datalogger.ino
@@ -1,8 +1,9 @@
-#include <TimerOne.h>
+//#include <TimerOne.h>
 #include <SPI.h>
 #include <SD.h>
 #include <SparkFun_ADXL345.h>
 #include <SoftwareSerial.h>
+#include <MsTimer2.h>
 
 //----------------------------------------------------------------------------------
 // CONSTANTES
@@ -15,6 +16,7 @@
 #define MAX6675_SCK  9
 #define START "Start"
 #define STOP "Stop"
+#define CONFIG "Config"
 
 const char* ITEM_MENU[] = {"0. Paramètres", "1. Start" , "2. Stop"};
 
@@ -23,29 +25,28 @@ const char* ITEM_MENU[] = {"0. Paramètres", "1. Start" , "2. Stop"};
 //----------------------------------------------------------------------------------
 SoftwareSerial BT(PIN_BT_RX,PIN_BT_TX);                  // BLUETOOTH
 ADXL345 adxl = ADXL345();                                // Capteur ADXL
-volatile int x,y,z;                                      // Valeurs ADXL
-volatile double tc1;
 File dataFile;                                           // Fichier sur carte SD
 String dataString = "";                                  // String courante à écrire
 unsigned long  pm_flush;                                 // Précédent millis() pour flush
-volatile bool flag = false;                              // Flag acquisition
-bool flag_run = false;                                   // Flag acquis en cours
+unsigned long  cm;                                       // millis() courant
+bool flag_run = false;                                   // Flag acquisition en route
+bool flag = false;                                       // Flag mesure faite
+int x,y,z;                                               // Valeurs ADXL
 
 //----------------------------------------------------------------------------------
 // PARAMETRES
 //----------------------------------------------------------------------------------
-volatile bool Voie_ON[]= {                               // Voies actives
+bool Voie_ON[]= {                                        // Voies actives
   true, true, true, true, true, true};
-volatile double T = 500000;                              // Période acquisition µs
+unsigned long  T = 500;                                  // Période acquisition µs
 unsigned long T_FLUSH = 2000;                            // Période écriture fichier ms
 
 //----------------------------------------------------------------------------------
-// ISR ACQUISITION
+// ISR MESURE
 //----------------------------------------------------------------------------------
-void isrTimer1(){
-  Timer1.stop();
+void mesure(){
   dataString = "";
-  Timer1.initialize(T);
+
   // 0 = millis
   // 1 = RTC
   // 2,3,4 = X,Y,Z
@@ -75,16 +76,16 @@ void menu(){
 void setup() {
   Serial.begin(9600);
   BT.begin(9600);
-  Serial.print("Initializing SD card...");
-  BT.print("Initializing SD card...");
+  Serial.print(F("Initializing SD card..."));
+  BT.print(F("Initializing SD card..."));
 
  if (!SD.begin(PIN_SD_CS)) {
     Serial.println("Card failed");
     BT.println("Card failed");
     while (1);
   }
-  Serial.println("card initialized.");
-  BT.println("card initialized.");
+  Serial.println(F("card initialized."));
+  BT.println(F("card initialized."));
 
   pinMode(MAX6675_CS, OUTPUT);
   pinMode(MAX6675_SO, INPUT);
@@ -94,17 +95,10 @@ void setup() {
   adxl.setRangeSetting(4);
 
   dataFile = SD.open("datalog.txt", FILE_WRITE);
-Timer1.stop();
   menu();
-  
-  //Timer1.attachInterrupt(isrTimer1);
-  Timer1.stop();
-
-  //isrTimer1();
-  //Timer1.start();
-
-  //Timer1.initialize(1000000);
 
+  MsTimer2::set(T, mesure); // 500ms period
+  MsTimer2::stop();
 }
 
 double readTC() {
@@ -133,41 +127,54 @@ double readTC() {
   return v*0.25;  // The remaining bits are the number of 0.25 degree (C) counts
 }
 
+void config(){
+  affich(CONFIG);
+  affich(String("Période acquisition [" + String(T) + "]"));
+}
+
+void affich(String x){
+  Serial.println(x);
+  BT.println(x);
+}
+
 void loop() {
-  if (flag) {
+  cm = millis();
+ if (flag) {
     dataFile.println(dataString);    
     Serial.println(dataString);
     BT.println(dataString);
-    flag = false;
+    if (Voie_ON[2] || Voie_ON[3] || Voie_ON[4]){adxl.readAccel(&x, &y, &z);}
+    flag=false;
   }
 
   byte in = 0;
 
   if (Serial.available()>0){in = Serial.read();}
   if (    BT.available()>0){in =     BT.read();}
-  
+
+   if (!flag_run && in == 48) {
+    config();
+   }
+
    if (!flag_run && in == 49) {
-     Timer1.attachInterrupt(isrTimer1);
-     Timer1.initialize(T);
      Serial.println(START); 
      BT.println(START);
      flag_run = true;
+     MsTimer2::set(T, mesure);
+     MsTimer2::start();
    }
    if (flag_run && in == 50) {
-     Timer1.stop();
      Serial.println(STOP);
      BT.println(STOP);
      flag_run = false;
+     MsTimer2::stop();
+     dataFile.flush();
      menu();
    }    
 
-  if ((millis()-pm_flush)>T_FLUSH) {
+  if (flag_run && ((cm-pm_flush)>T_FLUSH)) {
     dataFile.flush();
-    pm_flush=millis();
+    pm_flush=cm;
   }
 
-  if (Voie_ON[2] || Voie_ON[3] || Voie_ON[4]){
-     adxl.readAccel(&x, &y, &z);
-  }
-}
-
+ }
diff --git a/README.md b/README.md
index 7f65ccd..8eac818 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,3 @@
 Datalogger sur base Arduino.
-En cours de déeloppement.
+
+En cours de dév..