diff --git a/include/main.h b/include/main.h
index 4cd4897..7112ae1 100644
--- a/include/main.h
+++ b/include/main.h
@@ -23,7 +23,8 @@
 #define SENSORS_NUMBER 5
 #define DHT22 22
 //comment for the test part this is the good frequency
-#define TIME_TO_SLEEP 598     
+#define TIME_TO_SLEEP 598
+//#define TIME_TO_SLEEP 28     
 #define US_TO_S_FACTOR 1000000
 #define R2 100
 #define R3 10
diff --git a/src/main.cpp b/src/main.cpp
index 15a0480..e4eed46 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -36,10 +36,18 @@ void setupWIFI(const char *wifi_name, const char *password)
   Serial.print("Connecting to ");
   Serial.print(wifi_name);
 
+  int cpttry = 10;
   while (WiFi.status() != WL_CONNECTED)
   {
     delay(500);
     Serial.print('.');
+
+    /* stop trying wifi connexion */
+    cpttry--;
+    if(cpttry == 0){
+      Serial.print("wifi: 10 try go to sleep");
+      sleep();
+    }
   }
   Serial.println('\n');
   Serial.println("Connection established!");
@@ -50,8 +58,16 @@ void setupWIFI(const char *wifi_name, const char *password)
 void reconnect(void)
 {
   Serial.println("Connecting to MQTT Broker...");
+  int cpttry = 10;
   while (!MqttClient.connected())
   {
+    /* stop trying mqtt connexion*/
+    cpttry--;
+    if(cpttry == 0){
+      Serial.print("Mqtt: 10 try go to sleep");
+      sleep();
+    }
+
     Serial.print(".");
     if (MqttClient.connect(ESPNAME, MQTT_USER, MQTT_MDP)) // MQTT_MDP (mot de passe)
     {
@@ -126,7 +142,8 @@ unsigned long getTime() {
 void writeMessage(char *txt, float *temp, float *hum, int number)
 {
   int chargelvl = Battery.getBatteryChargeLevel();
-  time_t rawtime = TimeClient.getEpochTime();
+  //time_t rawtime = TimeClient.getEpochTime();
+
 
   switch (number)
   {
@@ -154,16 +171,50 @@ void writeMessage(char *txt, float *temp, float *hum, int number)
   }
 }
 
+//--------------------  Condition  --------------------//
+
+bool ishour(int hours){
+  return hours <= (2 * TIME_TO_SLEEP) / 3600;
+}
+
+bool isminute(int minutes){
+  return minutes <= ((2 * TIME_TO_SLEEP) % 3600) / 60;
+}
+
+bool issecond(int secondes){
+  return secondes <= ((2 * TIME_TO_SLEEP) - 1 ) % 60;
+}
+
 //--------------------  Initialisation  --------------------//
 
 void setup()
 {
   Serial.begin(9600);
+
   setupWIFI(SSID, PWD);
   setupMQTT(MQTT_ADDRESS, MQTT_PORT);
   initSensors(sensors, SENSORS_NUMBER);
+  
+
   TimeClient.begin();
   TimeClient.forceUpdate();
+
+  /* Reboot one time per day */
+  int rawtime = (TimeClient.getEpochTime()) % 86400; // 86400 = 60sec*60minutes*24heures
+  int hours = rawtime / 3600, minutes = (rawtime % 3600) / 60 , secondes = rawtime % 60;
+
+  if( ishour(hours) && isminute(minutes) && issecond(secondes)){
+    ESP.restart();
+  }
+  /*                            ######### test time part #########
+  Serial.println('\n');
+  Serial.println(hours,DEC);
+  Serial.println(':');
+  Serial.println(minutes,DEC);
+  Serial.println(':');
+  Serial.println(secondes,DEC);
+  Serial.println('\n');
+  */
 }