diff --git a/Laser_Test/Laser_Test.ino b/Laser_Test/Laser_Test.ino
index 6d6806e..9d06e49 100644
--- a/Laser_Test/Laser_Test.ino
+++ b/Laser_Test/Laser_Test.ino
@@ -71,13 +71,13 @@ void setup()
     Serial.println("Lasertype set to : Linx 500SL - baudrate 19k2");
     //init serial ports
     MySerial1.begin(19200, SERIAL_8N1, pin_RXD1, pin_TXD1);
-    MySerial2.begin(19200, SERIAL_8N1, pin_RXD1, pin_TXD2);
+    MySerial2.begin(19200, SERIAL_8N1, pin_RXD2, pin_TXD2);
   }
   else {
     Serial.println("Lasertype set to : Linx ??? - baudrate 9600");
     //init serial ports
     MySerial1.begin(9600, SERIAL_8N1, pin_RXD1, pin_TXD1);
-    MySerial2.begin(9600, SERIAL_8N1, pin_RXD1, pin_TXD2);
+    MySerial2.begin(9600, SERIAL_8N1, pin_RXD2, pin_TXD2);
   }
 
   //init I2C Display
@@ -145,6 +145,7 @@ void loop()
     if (MySerial1.available() > 0) {
       // read the incoming byte:
       incomingByte = MySerial1.read();
+      MySerial2.write(incomingByte);
 
       // say what you got:
       Serial.print("P1 received: ");
@@ -154,6 +155,7 @@ void loop()
     if (MySerial2.available() > 0) {
       // read the incoming byte:
       incomingByte = MySerial2.read();
+      MySerial1.write(incomingByte);
 
       // say what you got:
       Serial.print("P2 received: ");