diff --git a/GCodes.h b/GCodes.h
index b3f0b49..90f2698 100644
--- a/GCodes.h
+++ b/GCodes.h
@@ -29,6 +29,7 @@ class GCodes
     GCodes(Platform* p, Move* m, Heat* h, Webserver* w);
     void Spin();
     void Init();
+    void Exit();
     
   private:
   
diff --git a/GCodes.ino b/GCodes.ino
index 2297336..9198527 100644
--- a/GCodes.ino
+++ b/GCodes.ino
@@ -30,12 +30,19 @@ GCodes::GCodes(Platform* p, Move* m, Heat* h, Webserver* w)
   webserver = w;
 }
 
+void GCodes::Exit()
+{
+  
+}
+
 void GCodes::Init()
 {
   lastTime = platform->Time();
   gcodePointer = 0;
 }
 
+
+
 void GCodes::ActOnGcode()
 {
   platform->Message(HOST_MESSAGE, "\nGCode: ");
diff --git a/Heat.h b/Heat.h
index 9fe90e4..2957703 100644
--- a/Heat.h
+++ b/Heat.h
@@ -39,6 +39,7 @@ class Heat
     Heat(Platform* p);
     void Spin();
     void Init();
+    void Exit();
     
   private:
   
diff --git a/Heat.ino b/Heat.ino
index de2a264..2b52eac 100644
--- a/Heat.ino
+++ b/Heat.ino
@@ -33,6 +33,11 @@ void Heat::Init()
   //inc = 0.01;  
 }
 
+void Heat::Exit()
+{
+  
+}
+
 void Heat::Spin()
 {
    unsigned long t = platform->Time();
diff --git a/Move.h b/Move.h
index 8a5db54..67910b2 100644
--- a/Move.h
+++ b/Move.h
@@ -28,6 +28,7 @@ class Move
     Move(Platform* p);
     void Init();
     void Spin();
+    void Exit();
     
   private:
   
diff --git a/Move.ino b/Move.ino
index 033442b..52e52b6 100644
--- a/Move.ino
+++ b/Move.ino
@@ -35,6 +35,11 @@ void Move::Init()
   platform->SetDirection(3, FORWARDS);  
 }
 
+void Move::Exit()
+{
+  
+}
+
 void Move::Spin()
 {
    unsigned long t = platform->Time();
diff --git a/Platform.h b/Platform.h
index 1586e7e..ec57a20 100644
--- a/Platform.h
+++ b/Platform.h
@@ -174,6 +174,8 @@ class Platform
                // loop of death...
   void Spin(); // This gets called in the main loop and should do any housekeeping needed
   
+  void Exit(); // Shut down tidily.  Calling Init after calling this should reset to the beginning
+  
   // Timing
   
   unsigned long Time(); // Returns elapsed microseconds since some arbitrary time
diff --git a/Platform.ino b/Platform.ino
index d254940..2f3225b 100644
--- a/Platform.ino
+++ b/Platform.ino
@@ -166,6 +166,11 @@ void Platform::Init()
   // SD.begin() returns with the SPI disabled, so you need not disable it here  
 }
 
+void Platform::Exit()
+{
+  
+}
+
 
 // Load settings from local storage; return true if successful, false otherwise
 
diff --git a/RepRapFirmware.h b/RepRapFirmware.h
index 5584a51..b98b5eb 100644
--- a/RepRapFirmware.h
+++ b/RepRapFirmware.h
@@ -41,6 +41,8 @@ class RepRap
     RepRap();
     void Init();
     void Spin();
+    void Exit();
+    
 //    Platform* getPlatform();
 //    Move* getMove();
 //    Heat* getHeat();
diff --git a/RepRapFirmware.ino b/RepRapFirmware.ino
index e9e5f3c..2fa66b3 100644
--- a/RepRapFirmware.ino
+++ b/RepRapFirmware.ino
@@ -63,6 +63,15 @@ void RepRap::Init()
   platform->Message(HOST_MESSAGE, "RepRapPro RepRap Firmware (Re)Started\n\n");
 }
 
+void RepRap::Exit()
+{
+  webserver->Exit();
+  gcodes->Exit();
+  heat->Exit();
+  move->Exit();
+  platform->Exit();  
+}
+
 void RepRap::Spin()
 {
   platform->Spin();
@@ -72,6 +81,8 @@ void RepRap::Spin()
   webserver->Spin();
 }
 
+
+
 void RepRap::Interrupt()
 {
   
diff --git a/Webserver.h b/Webserver.h
index cfd696e..31aff4f 100644
--- a/Webserver.h
+++ b/Webserver.h
@@ -43,6 +43,7 @@ class Webserver
     byte Read();
     void Init();
     void Spin();
+    void Exit();
     
   private:
   
diff --git a/Webserver.ino b/Webserver.ino
index eabcca2..d88c956 100644
--- a/Webserver.ino
+++ b/Webserver.ino
@@ -875,5 +875,10 @@ void Webserver::Init()
   InitialisePost();  
 }
 
+void Webserver::Exit()
+{
+  
+}
+