diff --git a/platformio.ini b/platformio.ini
index e59c71b..b327a44 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -8,23 +8,19 @@
 ; Please visit documentation for the other options and examples
 ; https://docs.platformio.org/page/projectconf.html
 
-[env:LedBoardV10]
+[env]
 platform = ststm32
-board = STM32L031K6
 framework = arduino
 upload_port = stlink
 debug_tool = stlink
 lib_ldf_mode = deep+
+
+[env:LedBoardV10]
+board = STM32L031K6
 build_flags = 
 	-DHARDWAREVERSION=10
 
 [env:ledboard_PROTO]
-platform = ststm32
 board = nucleo_l031K6
-framework = arduino
-upload_port = stlink
-debug_tool = stlink
-boards_dir = boards
-lib_ldf_mode = deep+
 build_flags = 
 	-DHARDWAREVERSION=09
\ No newline at end of file
diff --git a/src/board.h b/src/board.h
index ae447e9..fe4f35e 100644
--- a/src/board.h
+++ b/src/board.h
@@ -1,7 +1,10 @@
 #ifndef BOARDH
 #define BOARDH
 
-
+#define IDLESHUTDOWN   900000          // 15min* 60 sec * 1000ms
+#define VBATTMIN  3200
+#define VBATTMAX  4180
+#define VBATTREF  3300
 
 #ifndef UNIT_TEST
 
diff --git a/src/buttons.cpp b/src/buttons.cpp
index 62c28d7..4cd60f9 100644
--- a/src/buttons.cpp
+++ b/src/buttons.cpp
@@ -48,6 +48,20 @@ bool anybutton(void)
   return false;
 }
 
+bool anyButtonChanged(void)
+{
+  handleButtons();
+  for (auto &&i : buttonlist)
+  {
+    if (i->isChanged())
+    {
+      return true;
+    }
+  }
+  return false;
+}
+
+
 bool buttonIsPressed(e_ledcolor index)
 {
   c_button *thisbutton = getButton(index);
diff --git a/src/buttons.h b/src/buttons.h
index 50f90d5..cc67060 100644
--- a/src/buttons.h
+++ b/src/buttons.h
@@ -18,10 +18,12 @@ public:
   
   e_ledcolor getColor( void ){return _color;}
   uint8_t getIndex( void ) {return _index;}
+  bool isChanged( void ) {return changed();}
 
 };
 
 bool anybutton(void);
+bool anyButtonChanged(void);
 void initButtons(void);
 void handleButtons(void);
 c_button *getButton(unsigned int index);
@@ -34,4 +36,5 @@ bool buttonIsPressed(uint16_t index);
 bool buttonWasPressed(e_ledcolor index);
 
 
+
 #endif //BUTTONSH
\ No newline at end of file
diff --git a/src/chainGame.cpp b/src/chainGame.cpp
index f25d090..5b295f1 100644
--- a/src/chainGame.cpp
+++ b/src/chainGame.cpp
@@ -40,7 +40,7 @@ void ResetChainGame(void)
   cheatButtonFlag = false;
 }
 
-void HandleChainGame(void)
+void HandleChainGame(bool newstate)
 {
   if (!patternFlag && !cheatButtonFlag)
   {
diff --git a/src/chainGame.h b/src/chainGame.h
index 8efecfe..5c29883 100644
--- a/src/chainGame.h
+++ b/src/chainGame.h
@@ -4,7 +4,7 @@
 #include "Arduino.h"
 #include "buttons.h"
 
-void HandleChainGame( void );
+void HandleChainGame( bool newstate );
 void ResetChainGame(void);
 
 
diff --git a/src/detectled.cpp b/src/detectled.cpp
index a84e795..2a7622e 100644
--- a/src/detectled.cpp
+++ b/src/detectled.cpp
@@ -11,7 +11,7 @@ extern std::vector<c_button *> buttonlist;
 c_leds *ledlist_ptr;
 
 
-void handleDetectLed(void)
+void handleDetectLed(bool newstate)
 {
 
   for(auto &&button : buttonlist)
diff --git a/src/detectled.h b/src/detectled.h
index 2a817ee..aa91057 100644
--- a/src/detectled.h
+++ b/src/detectled.h
@@ -6,8 +6,7 @@
 #include "led.h"
 #include "vector"
 
-void handleDetectLed( void );
-void initDetectLed( void );
-
+void handleDetectLed(bool newstate);
+void initDetectLed(void);
 
 #endif //DETECTLED
\ No newline at end of file
diff --git a/src/game.cpp b/src/game.cpp
new file mode 100644
index 0000000..ef85547
--- /dev/null
+++ b/src/game.cpp
@@ -0,0 +1,54 @@
+#include "game.h"
+#include <vector>
+
+#include "simpleled.h"
+
+
+std::vector<c_game *> gameslist;
+
+void initGames(void)
+{
+  gameslist.clear();
+  gameslist.push_back(new c_simpleLed(simpleled));
+}
+
+void runGame(void)
+{
+  for(auto &&game: gameslist)
+  {
+    if(game->getStatus() == active)
+    {
+      game->runGame();
+      return;
+    }
+    if(game->getStatus() == init)
+    {
+      game->initGame();
+      return;
+    }
+  }
+}
+
+void activateGame(e_game nextgame)
+{
+  for(auto &&game: gameslist)
+  {
+    if(game->getIndex() == nextgame)
+    {
+      if(game->getStatus() != active)
+      {
+        game->setStatus(init);
+      }
+    }
+    else
+    {
+      game->setStatus(disabled);
+    }
+  }
+}
+
+
+
+
+
+
diff --git a/src/game.h b/src/game.h
index 9de6af9..14fd06a 100644
--- a/src/game.h
+++ b/src/game.h
@@ -1,18 +1,35 @@
 #ifndef GAMEH
 #define GAMEH
 
+typedef enum
+{
+  simpleled,
+  chaingame,
+  magicswitchboard,
+  detectled
+} e_game;
+
+typedef enum
+{
+  disabled,
+  init,
+  active
+} e_state;
+
 class c_game
 {
-
-protected:
-  bool _status;
+private:
+  const e_game _gameindex;
+  e_state _status;
 
 public:
-  c_game(void): _status(false) {};
+  c_game(e_game index) : _gameindex(index) {_status = disabled;}
 
-  void runGame(void);
-  void initGame(void);
-  bool getStatus(void) { return _status;}
+  virtual void runGame(void);
+  virtual void initGame(void);
+  e_state getStatus(void) { return _status; }
+  e_game getIndex(void) { return _gameindex; }
+  void setStatus(e_state newstate) { _status = newstate;}
 };
 
 #endif //GAMEH
\ No newline at end of file
diff --git a/src/magicSwitchBoard.cpp b/src/magicSwitchBoard.cpp
index 5825ec9..8f1704d 100644
--- a/src/magicSwitchBoard.cpp
+++ b/src/magicSwitchBoard.cpp
@@ -16,7 +16,7 @@ typedef enum
 states state = last;
 uint8_t sequence[CHANNELS] = {0xFF, 0xFF, 0xFF};
 const uint8_t buttonIndex[CHANNELS] = {1, 2, 3};
-const uint32_t leds[CHANNELS] = {LED1, LED2, LED3};
+const uint16_t leds[CHANNELS] = {1, 2, 3};
 
 uint64_t lastTime = 0;
 
@@ -41,12 +41,14 @@ void showLeds(void)
     {
       //check if the position is already programmed
       //write sequence led on
-      digitalWrite(leds[i], 1);
+      turnOnLed(leds[i]);
+      //digitalWrite(leds[i], 1);
     }
     else
     {
       //write sequence led off
-      digitalWrite(leds[i], 0);
+      turnOffLed(leds[i]);
+      //digitalWrite(leds[i], 0);
     }
   }
 }
@@ -59,8 +61,8 @@ void resetMagicSwitchBoard(void)
   for (int i = 0; i < CHANNELS; i++)
   {
     sequence[i] = 0xff;
-    digitalWrite(leds[i], 0);
   }
+  turnOffAllLed();
 }
 
 bool CheckTimeOut(void)
@@ -131,14 +133,11 @@ void handleIdle(void)
   }
   else
   {
-    for (auto &&i : leds)
-    {
-      digitalWrite(i, 0);
-    }
+    turnOffAllLed();
   }
 }
 
-void handleMagicSwitchBoard(void)
+void handleMagicSwitchBoard(bool newstate)
 {
   switch (state)
   {
@@ -171,4 +170,7 @@ void handleMagicSwitchBoard(void)
   
 }
 
-
+void initMagicSwitchBoard(void)
+{
+  resetMagicSwitchBoard();
+}
diff --git a/src/magicSwitchBoard.h b/src/magicSwitchBoard.h
index bd4c1d5..a251e24 100644
--- a/src/magicSwitchBoard.h
+++ b/src/magicSwitchBoard.h
@@ -3,6 +3,7 @@
 
 #include "buttons.h"
 
-void handleMagicSwitchBoard( void );
+void handleMagicSwitchBoard( bool newstate );
+void initMagicSwitchBoard(void);
 
 #endif //MAGICSWITCHBOARDH
\ No newline at end of file
diff --git a/src/main.cpp b/src/main.cpp
index c4f5d46..5712602 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -10,9 +10,7 @@
 #include "led.h"
 #include "power.h"
 
-
-#define TIMEOUT 900000          // 15min* 60 sec * 1000ms
-#define GAMESELECTTIMEOUT 10000 // 7sec * 1000ms
+#define GAMESELECTTIMEOUT 10000 // 10sec * 1000ms
 
 typedef enum
 {
@@ -28,12 +26,20 @@ typedef enum
 
 game currentGame = none;
 game nextGame = none;
+bool newstate = false;
 uint8_t gameState = 0;
-uint64_t lasttimeOut = 0;
 uint64_t GameSelectTimer = 0;
-bool buttonChanged = false;
 
-void HandleIdle(void)
+void setNewState(game nextstate)
+{
+  if (nextstate != currentGame)
+  {
+    currentGame = nextstate;
+    newstate = true;
+  }
+}
+
+void HandleIdle(bool newstate)
 {
   //green button first released
   if (!buttonIsPressed(YELLOW) && buttonIsPressed(RED) && buttonIsPressed(GREEN) && (nextGame == none))
@@ -63,7 +69,7 @@ void HandleIdle(void)
   //wait for all buttons to be switched off
   if (!anybutton())
   {
-    currentGame = nextGame;
+    setNewState(nextGame);
     nextGame = none;
   }
 }
@@ -84,7 +90,7 @@ void HandleGameSelectTimeout(void)
       //check timeout
       if (currentmillis - GameSelectTimer > GAMESELECTTIMEOUT)
       {
-        currentGame = idle;
+        setNewState(idle);
         GameSelectTimer = 0;
       }
     }
@@ -96,109 +102,94 @@ void HandleGameSelectTimeout(void)
   }
 }
 
-void HandleTimeOut(void)
-{
-  uint64_t currentmillis = millis();
-  if (!lasttimeOut)
-  {
-    lasttimeOut = currentmillis;
-    buttonChanged = anybutton();
-  }
-
-  //check if lastTime is initialized or timeout expired
-  if ((currentmillis - lasttimeOut > TIMEOUT))
-  {
-    currentGame = sleep;
-    turnOffAllLed();
-    shutdown();
-  }
-  else
-  {
-    if (buttonChanged != anybutton())
-    {
-      buttonChanged = anybutton();
-      //game in progress, update timer
-      lasttimeOut = currentmillis;
-    }
-  }
-}
-
-
 void setup()
 {
   initLeds();
   initButtons();
-  initDetectLed();
-  initSimpleLed();
   initLowPower();
   initBattery();
+
+  initDetectLed();
+  initMagicSwitchBoard();
+  initSimpleLed();
 }
 
 void loop()
 {
   handleButtons();
-  HandleTimeOut();
+  HandlePower();
   HandleGameSelectTimeout();
 
   switch (currentGame)
   {
   case idle:
   {
-    HandleIdle();
+    HandleIdle(newstate);
+    newstate = false;
   }
   break;
 
   case SimpleLed:
   {
-    handleSimpleLed();
+    handleSimpleLed(newstate);
+    newstate = false;
   }
   break;
 
   case magicSwitchBoard:
   {
-    handleMagicSwitchBoard();
+    handleMagicSwitchBoard(newstate);
+    newstate = false;
   }
   break;
 
   case detectLED:
   {
-    handleDetectLed();
+    handleDetectLed(newstate);
+    newstate = false;
   }
   break;
 
   case ChainGame:
   default:
   {
-    HandleChainGame();
+    HandleChainGame(newstate);
+    newstate = false;
   }
   break;
 
   case none:
   {
-    currentGame = SimpleLed;
     batteryCheck();
     batterydisplay();
     delay(1000);
-    if (buttonIsPressed(GREEN))
+    turnOffAllLed();
+    if (buttonIsPressed(GREEN) && currentGame == none)
     {
-      currentGame = ChainGame;
+      setNewState(ChainGame);
       turnOnLed(GREEN);
     }
-    if (buttonIsPressed(RED))
+    if (buttonIsPressed(RED) && currentGame == none)
     {
-      currentGame = magicSwitchBoard;
+      setNewState(magicSwitchBoard);
       turnOnLed(RED);
     }
 
-    if (buttonIsPressed(YELLOW))
+    if (buttonIsPressed(YELLOW) && currentGame == none)
     {
-      currentGame = SimpleLed;
+      setNewState(SimpleLed);
       turnOnLed(YELLOW);
     }
 
+    if (currentGame == none)
+    {
+      setNewState(SimpleLed);
+    }
+
     //wait for all buttons idle
     while (anybutton())
-    {}
+    {
+    }
 
     turnOffAllLed();
   }
diff --git a/src/power.cpp b/src/power.cpp
index e0e7ded..2de243c 100644
--- a/src/power.cpp
+++ b/src/power.cpp
@@ -3,35 +3,25 @@
 #include "rtc.h"
 #include "low_Power.h"
 #include "led.h"
+#include "buttons.h"
 
 #ifdef VBATTPIN
 #include "Battery.h"
-  Battery battery(2500, 4160, VBATTPIN);
+  Battery battery(VBATTMIN, VBATTMAX, VBATTPIN);
 #endif
 
 void initBattery(void)
 {
 #ifdef VBATTPIN
-  battery.begin(3300, (R12+R13)/R13); //R1 = 220K, R2 = 100K, factor = (R1+R2)/R2
+  battery.begin(VBATTREF, (R12+R13)/R13); //R1 = 220K, R2 = 100K, factor = (R1+R2)/R2
 #endif
 }
 
-uint16_t batteryGetVoltage( void )
-{
-#ifdef VBATTPIN
-  return battery.voltage();
-#endif
-return 4200;
-}
-
 void batterydisplay(void)
 {
 #ifdef VBATTPIN
   uint16_t currentlevel = battery.level();
-  uint16_t currentvoltage = batteryGetVoltage();
-  
-  if(currentvoltage)
-  {
+ 
     if (currentlevel > 90)
     {
       turnOnLed(3);
@@ -44,14 +34,14 @@ void batterydisplay(void)
     {
       turnOnLed(1);
     }
-  }
+
 #endif
 }
 
 void batteryCheck(void)
 {
 #ifdef VBATTPIN
-  if (battery.level() < 10)
+  if (battery.voltage() < VBATTMIN)
   {
     for( int i = 0; i < 10;i++)
     {
@@ -75,4 +65,40 @@ void initLowPower(void)
 void shutdown(void)
 {
   LowPower_shutdown();
+}
+
+void HandlePower(void)
+{
+  HandleTimeOut();
+  batteryCheck();
+}
+
+
+void HandleTimeOut(void)
+{
+  uint64_t currentmillis = millis();
+  static uint64_t lasttimeOut = 0;
+  static bool buttonChanged = false;
+
+  if (!lasttimeOut)
+  {
+    lasttimeOut = currentmillis;
+    buttonChanged = anybutton();
+  }
+
+  //check if lastTime is initialized or timeout expired
+  if ((currentmillis - lasttimeOut > IDLESHUTDOWN))
+  {
+    turnOffAllLed();
+    shutdown();
+  }
+  else
+  {
+    if (buttonChanged != anybutton())
+    {
+      buttonChanged = anybutton();
+      //game in progress, update timer
+      lasttimeOut = currentmillis;
+    }
+  }
 }
\ No newline at end of file
diff --git a/src/power.h b/src/power.h
index 6ae4326..3af41ef 100644
--- a/src/power.h
+++ b/src/power.h
@@ -1,10 +1,12 @@
 #pragma once
 
 //battery
-void initBattery( void );
-void batterydisplay( void );
+void initBattery(void);
+void batterydisplay(void);
 void batteryCheck(void);
 
 //low power
-void initLowPower( void );
-void shutdown( void );
+void initLowPower(void);
+void shutdown(void);
+void HandleTimeOut(void);
+void HandlePower(void);
diff --git a/src/simpleled.cpp b/src/simpleled.cpp
index cf32ae0..8140836 100644
--- a/src/simpleled.cpp
+++ b/src/simpleled.cpp
@@ -1,15 +1,16 @@
 #include "simpleled.h"
 
 
+
 void c_simpleLed::runGame(void)
 {
-  handleSimpleLed();
+  handleSimpleLed(false);
 }
 
 void c_simpleLed::initGame(void)
 {
   initSimpleLed();
-  _status = true;
+  setStatus(active);
 }
 
 
@@ -22,7 +23,7 @@ void initSimpleLed(void)
   status = true;
 }
 
-void handleSimpleLed(void)
+void handleSimpleLed(bool newstate)
 {
   for (auto &&button : buttonlist)
   {
diff --git a/src/simpleled.h b/src/simpleled.h
index c8a6fa6..6a2effc 100644
--- a/src/simpleled.h
+++ b/src/simpleled.h
@@ -8,14 +8,14 @@
 
 class c_simpleLed : public c_game
 {
+public:
+  c_simpleLed(e_game game): c_game{game} {}
   void runGame(void);
   void initGame(void);
 };
 
-
-void initSimpleLed( void );
-void handleSimpleLed( void );
-bool getStatusSimpleLed( void );
-
+void initSimpleLed(void);
+void handleSimpleLed(bool newstate);
+bool getStatusSimpleLed(void);
 
 #endif //SIMPLELEDH
\ No newline at end of file