diff --git a/src/main.cpp b/src/main.cpp
index 3a610b0..41f3bdc 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,11 +1,13 @@
 /*
 ==== CUIZZMASTER ====
-Basé sur Arduino Uno R3 (Atmel MEGA328P)
+Basé sur Arduino Nano (Atmel MEGA328P) - Service Slave Seulement
 */
 #include <Arduino.h>
 #include <SoftwareSerial.h>
 
 // Définition des PIN
+#define CUIZZ_VERSION "1.0"
+
 #define CUIZZ_HC12SERIAL_RX 11
 #define CUIZZ_HC12SERIAL_TX 10
 
@@ -13,9 +15,26 @@ Basé sur Arduino Uno R3 (Atmel MEGA328P)
 SoftwareSerial HC12(CUIZZ_HC12SERIAL_RX,CUIZZ_HC12SERIAL_TX)
 
 void setup() {
-  // put your setup code here, to run once:
+  // Initialisation 
+  // Open serial communications and wait for port to open:
+  Serial.begin(9600);
+  while (!Serial) {
+    ; // wait for serial port to connect. Needed for native USB port only
+  }
+
+  HC12.begin(9600);
+
+  // Initialisation Slave ONLY
+  Serial.print("CUIZZMASTER - v");
+  Serial.println(CUIZZ_VERSION);
+  Serial.println("INIT OK");
 }
 
 void loop() {
-  // put your main code here, to run repeatedly:
+  if (HC12.available()) {
+    Serial.write(mySerial.read());
+  }
+  if (Serial.available()) {
+    HC12.write(Serial.read());
+  }
 }
\ No newline at end of file