diff --git a/FlippR-Driver/contrib/json_example/output/Sound_Config.json b/FlippR-Driver/contrib/json_example/output/Sound_Config.json
index 8b8f1ab..e3122ff 100644
--- a/FlippR-Driver/contrib/json_example/output/Sound_Config.json
+++ b/FlippR-Driver/contrib/json_example/output/Sound_Config.json
@@ -2,11 +2,6 @@
     "deactivation_time_milliseconds" : 10,
     "sounds" :
     [
-      {
-        "id" : -1, //todo should be 0
-        "address" : 0,
-        "description" : "Deactivate Sound"
-      },
       {
         "id" : 0,
         "address" : "22",
diff --git a/FlippR-Driver/include/output/items/Flipper.h b/FlippR-Driver/include/output/items/Flipper.h
index 45e64f5..93f8a66 100644
--- a/FlippR-Driver/include/output/items/Flipper.h
+++ b/FlippR-Driver/include/output/items/Flipper.h
@@ -8,6 +8,7 @@
 #ifndef _INCLUDE_FLIPPR_CODE_FLIPPER_H
 #define _INCLUDE_FLIPPR_CODE_FLIPPER_H
 
+#include "Item.h"
 namespace flippR_driver
 {
 namespace output
@@ -15,7 +16,7 @@ namespace output
 namespace items
 {
 
-class Flipper
+class Flipper : public virtual Item
 {
 public:
   virtual ~Flipper() = default;
diff --git a/FlippR-Driver/include/output/items/Lamp.h b/FlippR-Driver/include/output/items/Lamp.h
index 7c9c9a7..0782a94 100644
--- a/FlippR-Driver/include/output/items/Lamp.h
+++ b/FlippR-Driver/include/output/items/Lamp.h
@@ -17,7 +17,7 @@ namespace output
 namespace items
 {
 
-class Lamp : public Item
+class Lamp : public virtual Item
 {
 public:
   virtual ~Lamp() = default;
diff --git a/FlippR-Driver/include/output/items/Solenoid.h b/FlippR-Driver/include/output/items/Solenoid.h
index c509ba0..8a98261 100644
--- a/FlippR-Driver/include/output/items/Solenoid.h
+++ b/FlippR-Driver/include/output/items/Solenoid.h
@@ -18,7 +18,7 @@ namespace output
 namespace items
 {
 // todo get name? parent calss output_item?
-class Solenoid : public Item
+class Solenoid : public virtual Item
 {
 public:
   virtual ~Solenoid() = default;
diff --git a/FlippR-Driver/include/output/items/Sound.h b/FlippR-Driver/include/output/items/Sound.h
index bcde888..c2ddcee 100644
--- a/FlippR-Driver/include/output/items/Sound.h
+++ b/FlippR-Driver/include/output/items/Sound.h
@@ -17,7 +17,7 @@ namespace output
 namespace items
 {
 
-class Sound : public Item
+class Sound : public virtual Item
 {
 public:
 	virtual ~Sound() = default;
diff --git a/FlippR-Driver/src/output/DriverBoardPinController.h b/FlippR-Driver/src/output/DriverBoardPinController.h
index a35de2f..8e108a1 100644
--- a/FlippR-Driver/src/output/DriverBoardPinController.h
+++ b/FlippR-Driver/src/output/DriverBoardPinController.h
@@ -5,7 +5,6 @@
 #ifndef FLIPPR_DRIVER_DRIVERBOARDPINCONTROLLER_H
 #define FLIPPR_DRIVER_DRIVERBOARDPINCONTROLLER_H
 
-#include "OutputPinController.h"
 
 namespace flippR_driver
 {
@@ -17,11 +16,13 @@ namespace items
   class DriverBoardItem;
 }
 
-class DriverBoardPinController : public OutputPinController
+class DriverBoardPinController
 {
 public:
   virtual ~DriverBoardPinController() = default;
 
+  virtual void activate(items::DriverBoardItem &driver_board_item) = 0;
+  virtual void deactivate(items::DriverBoardItem &driver_board_item) = 0;
 };
 
 }
diff --git a/FlippR-Driver/src/output/OutputPinController.cpp b/FlippR-Driver/src/output/OutputPinController.cpp
deleted file mode 100644
index 2ba095f..0000000
--- a/FlippR-Driver/src/output/OutputPinController.cpp
+++ /dev/null
@@ -1,33 +0,0 @@
-/*
- * OutputGPIOInterface.h
- *
- *  Created on: May 31, 2018
- *      Author: Andreas Schneider, Johannes Wendel, Jonas Zeunert
- */
-
-#include "OutputPinController.h"
-
-#include "utility/config.h"
-
-#include "wiringPi/mcp23017.h"
-
-namespace flippR_driver
-{
-namespace output
-{
-
-void OutputPinController::initialize_i2c_address(uint8_t i2c_address, uint8_t pin_base)
-{
-  mcp23017Setup(pin_base, i2c_address);
-}
-
-void OutputPinController::initialize_pins_output(uint8_t pin_base, std::map<std::string, uint8_t>::iterator begin, std::map<std::string, uint8_t>::iterator end)
-{
-  for(; begin != end; begin++)
-  {
-    initialize_output_pin(pin_base + begin->second);
-  }
-}
-
-}
-}
diff --git a/FlippR-Driver/src/output/OutputPinController.h b/FlippR-Driver/src/output/OutputPinController.h
deleted file mode 100644
index c58e6bb..0000000
--- a/FlippR-Driver/src/output/OutputPinController.h
+++ /dev/null
@@ -1,41 +0,0 @@
-/*
- * OutputGPIOInterface.h
- *
- *  Created on: May 31, 2018
- *      Author: Andreas Schneider, Johannes Wendel, Jonas Zeunert
- */
-
-#ifndef SRC_UTILITIES_OUTPUTGPIOINTERFACE_H_
-#define SRC_UTILITIES_OUTPUTGPIOINTERFACE_H_
-
-#include "PinController.h"
-
-#include <map>
-
-namespace flippR_driver
-{
-namespace output
-{
-
-namespace items
-{
-  class DriverBoardItem;
-}
-class OutputPinController : public PinController
-{
-
-public:
-  virtual ~OutputPinController() = default;
-
-  virtual void activate(items::DriverBoardItem &driver_board_item) = 0;
-  virtual void deactivate(items::DriverBoardItem &driver_board_item) = 0;
-
-protected:
-  static void initialize_i2c_address(uint8_t i2c_address, uint8_t pin_base);
-  static void initialize_pins_output(uint8_t pin_base, std::map<std::string, uint8_t>::iterator begin, std::map<std::string, uint8_t>::iterator end);
-};
-
-}
-}
-
-#endif
diff --git a/FlippR-Driver/src/output/SoundBoardPinController.h b/FlippR-Driver/src/output/SoundBoardPinController.h
index fe67655..e0ee46e 100644
--- a/FlippR-Driver/src/output/SoundBoardPinController.h
+++ b/FlippR-Driver/src/output/SoundBoardPinController.h
@@ -5,7 +5,6 @@
 #ifndef FLIPPR_DRIVER_OUTPUT_SOUNDBOARDPINCONTROLLER_H
 #define FLIPPR_DRIVER_OUTPUT_SOUNDBOARDPINCONTROLLER_H
 
-#include "output/OutputPinController.h"
 #include "output/items/detail/Sound.h"
 
 namespace flippR_driver
@@ -13,15 +12,10 @@ namespace flippR_driver
 namespace output
 {
 
-namespace items // todo include + fw decl??
-{
-  class Sound;
-}
-class SoundBoardPinController : public OutputPinController
+class SoundBoardPinController
 {
 public:
-
-  virtual void deactivate(items::DriverBoardItem &driver_board_item) = 0;
+  virtual ~SoundBoardPinController() = default;
 
   virtual void activate(const items::detail::Sound &sound) = 0;
   virtual void deactivate(const items::detail::Sound &sound) = 0;
diff --git a/FlippR-Driver/src/output/detail/DisplayBoardPinController.h b/FlippR-Driver/src/output/detail/DisplayBoardPinController.h
index ad56387..d2250c9 100644
--- a/FlippR-Driver/src/output/detail/DisplayBoardPinController.h
+++ b/FlippR-Driver/src/output/detail/DisplayBoardPinController.h
@@ -9,7 +9,6 @@
 
 #include "output/DisplayBoardPinController.h"
 
-#include "output/OutputPinController.h"
 
 namespace flippR_driver
 {
@@ -18,7 +17,7 @@ namespace output
 namespace detail
 {
 
-class DisplayBoardPinController : public output::DisplayBoardPinController, public OutputPinController
+class DisplayBoardPinController : public output::DisplayBoardPinController
 {
 public:
   explicit DisplayBoardPinController(std::map<std::string, uint8_t> pins_display);
diff --git a/FlippR-Driver/src/output/detail/DriverBoardPinController.h b/FlippR-Driver/src/output/detail/DriverBoardPinController.h
index 6068404..2c8de2b 100644
--- a/FlippR-Driver/src/output/detail/DriverBoardPinController.h
+++ b/FlippR-Driver/src/output/detail/DriverBoardPinController.h
@@ -5,12 +5,11 @@
 #ifndef FLIPPR_DRIVER_OUTPUT_IMPL_DRIVERBOARDPINCONTROLLER_H
 #define FLIPPR_DRIVER_OUTPUT_IMPL_DRIVERBOARDPINCONTROLLER_H
 
-#include <map>
-#include <memory>
-
 #include "output/DriverBoardPinController.h"
 
-#include "output/OutputPinController.h"
+#include <map>
+#include <memory>
+#include <mutex>
 
 namespace flippR_driver
 {
diff --git a/FlippR-Driver/src/output/detail/SoundBoardPinController.cpp b/FlippR-Driver/src/output/detail/SoundBoardPinController.cpp
index b9c5246..f2358de 100644
--- a/FlippR-Driver/src/output/detail/SoundBoardPinController.cpp
+++ b/FlippR-Driver/src/output/detail/SoundBoardPinController.cpp
@@ -32,16 +32,16 @@ void SoundBoardPinController::activate(const items::detail::Sound &sound)
 
   write_sound_address(sound.get_address());
 
-  fire_sound(true);
+  fire_sound();
 }
 
 void SoundBoardPinController::deactivate(const items::detail::Sound &sound)
 {
   std::lock_guard<std::mutex> guard(*output_item_mutex);
 
-  write_sound_address(sound.get_address());
+  write_sound_address(0);
 
-  fire_sound(false);
+  fire_sound();
 }
 
 
@@ -56,9 +56,11 @@ void SoundBoardPinController::write_sound_address(uint8_t address) const
   write_pin(pins_sound.at("G"), address & 0b1000000u);
 }
 
-void SoundBoardPinController::fire_sound(bool fire) const
+void SoundBoardPinController::fire_sound() const
 {
-  PinController::write_pin(pins_sound.at("fire"), fire);
+  PinController::write_pin(pins_sound.at("fire"), true);
+
+  PinController::write_pin(pins_sound.at("fire"), false);
 }
 
 void SoundBoardPinController::write_pin(uint8_t pin, bool value) const
diff --git a/FlippR-Driver/src/output/detail/SoundBoardPinController.h b/FlippR-Driver/src/output/detail/SoundBoardPinController.h
index e433381..ce5a4ea 100644
--- a/FlippR-Driver/src/output/detail/SoundBoardPinController.h
+++ b/FlippR-Driver/src/output/detail/SoundBoardPinController.h
@@ -7,8 +7,6 @@
 
 #include "output/SoundBoardPinController.h"
 
-#include "output/OutputPinController.h"
-
 #include <map>
 
 namespace flippR_driver
@@ -24,13 +22,12 @@ public:
   SoundBoardPinController(std::map<std::string, uint8_t> pins_sound, std::shared_ptr<std::mutex> output_item_mutex);
   ~SoundBoardPinController() override = default;
 
-
-  void activate(const items::detail::Sound &sound);
-  void deactivate(const items::detail::Sound &sound);
+  void activate(const items::detail::Sound &sound) override;
+  void deactivate(const items::detail::Sound &sound) override;
 
 private:
   void write_sound_address(uint8_t address) const;
-  void fire_sound(bool fire) const;
+  void fire_sound() const;
 
   void write_pin(uint8_t pin, bool value) const;
 
diff --git a/FlippR-Driver/src/output/items/detail/DriverBoardItem.cpp b/FlippR-Driver/src/output/items/detail/DriverBoardItem.cpp
index 0e42f43..f59ff6b 100644
--- a/FlippR-Driver/src/output/items/detail/DriverBoardItem.cpp
+++ b/FlippR-Driver/src/output/items/detail/DriverBoardItem.cpp
@@ -6,8 +6,8 @@
 
 using namespace flippR_driver::output;
 
-items::detail::DriverBoardItem::DriverBoardItem(std::shared_ptr<OutputPinController> pin_controller, const uint8_t address) :
-  pin_controller(std::move(pin_controller)), address(address)
+items::detail::DriverBoardItem::DriverBoardItem(const uint8_t address) :
+  address(address)
 {}
 
 uint8_t items::detail::DriverBoardItem::get_address() const
diff --git a/FlippR-Driver/src/output/items/detail/DriverBoardItem.h b/FlippR-Driver/src/output/items/detail/DriverBoardItem.h
index 0e56f9e..3582e61 100644
--- a/FlippR-Driver/src/output/items/detail/DriverBoardItem.h
+++ b/FlippR-Driver/src/output/items/detail/DriverBoardItem.h
@@ -7,8 +7,6 @@
 
 #include "output/items/DriverBoardItem.h"
 
-#include "output/OutputPinController.h"
-
 #include <memory>
 namespace flippR_driver
 {
@@ -22,7 +20,7 @@ namespace detail
 class DriverBoardItem : public output::items::DriverBoardItem
 {
 public:
-  DriverBoardItem(std::shared_ptr<OutputPinController> pin_controller, const uint8_t address);
+  DriverBoardItem(const uint8_t address);
 
   ~DriverBoardItem() override = default;
 
@@ -30,8 +28,6 @@ public:
 
 protected:
   const uint8_t address;
-
-  const std::shared_ptr<OutputPinController> pin_controller;
 };
 
 
diff --git a/FlippR-Driver/src/output/items/detail/Item.h b/FlippR-Driver/src/output/items/detail/Item.h
index f14aeaf..85426cf 100644
--- a/FlippR-Driver/src/output/items/detail/Item.h
+++ b/FlippR-Driver/src/output/items/detail/Item.h
@@ -22,7 +22,7 @@ namespace items
 namespace detail
 {
 
-class Item : public items::Item
+class Item : public virtual items::Item
 {
 public:
   Item(std::string name);
diff --git a/FlippR-Driver/src/output/items/detail/Lamp.cpp b/FlippR-Driver/src/output/items/detail/Lamp.cpp
index cee0d49..b7d237a 100644
--- a/FlippR-Driver/src/output/items/detail/Lamp.cpp
+++ b/FlippR-Driver/src/output/items/detail/Lamp.cpp
@@ -20,7 +20,7 @@ namespace detail
 {
 
 Lamp::Lamp(std::shared_ptr<DriverBoardPinController> pin_controller, uint8_t address, std::string name) :
-detail::Item(std::move(name)), DriverBoardItem(std::move(pin_controller), address), activated(false)
+detail::Item(std::move(name)), DriverBoardItem(address), pin_controller(std::move(pin_controller), activated(false)
 {
   CLOG(INFO, OUTPUT_LOGGER) << "Created lamp " << name << " with address " << address;
 }
diff --git a/FlippR-Driver/src/output/items/detail/Lamp.h b/FlippR-Driver/src/output/items/detail/Lamp.h
index 12fca3f..7afe204 100644
--- a/FlippR-Driver/src/output/items/detail/Lamp.h
+++ b/FlippR-Driver/src/output/items/detail/Lamp.h
@@ -35,6 +35,7 @@ public:
   bool is_activated() override;
 
 private:
+  const std::shared_ptr<DriverBoardPinController> pin_controller;
   bool activated;
 };
 
diff --git a/FlippR-Driver/src/output/items/detail/Solenoid.cpp b/FlippR-Driver/src/output/items/detail/Solenoid.cpp
index 819f091..289b380 100644
--- a/FlippR-Driver/src/output/items/detail/Solenoid.cpp
+++ b/FlippR-Driver/src/output/items/detail/Solenoid.cpp
@@ -19,7 +19,7 @@ namespace detail
 {
 
 Solenoid::Solenoid(std::shared_ptr<DriverBoardPinController> pin_controller, uint8_t address, std::string name, std::chrono::milliseconds deactivation_time)
-: detail::Item(std::move(name)), DriverBoardItem(std::move(pin_controller), address), deactivation_time(deactivation_time)
+: detail::Item(std::move(name)), DriverBoardItem(address), pin_controller(std::move(pin_controller)), deactivation_time(deactivation_time)
 {
   CLOG(INFO, OUTPUT_LOGGER) << "Created solenoid " << name << " with address " << address;
 }
diff --git a/FlippR-Driver/src/output/items/detail/Solenoid.h b/FlippR-Driver/src/output/items/detail/Solenoid.h
index ea3244e..7d8e543 100644
--- a/FlippR-Driver/src/output/items/detail/Solenoid.h
+++ b/FlippR-Driver/src/output/items/detail/Solenoid.h
@@ -38,6 +38,7 @@ private:
   virtual void triggerTask();
 
 private:
+  const std::shared_ptr<DriverBoardPinController> pin_controller;
   const std::chrono::milliseconds deactivation_time;
 
   std::future<void> trigger_task;
diff --git a/FlippR-Driver/src/output/items/detail/Sound.cpp b/FlippR-Driver/src/output/items/detail/Sound.cpp
index 50b500d..d967d36 100644
--- a/FlippR-Driver/src/output/items/detail/Sound.cpp
+++ b/FlippR-Driver/src/output/items/detail/Sound.cpp
@@ -21,8 +21,7 @@ namespace detail
 {
 
 Sound::Sound(std::shared_ptr<SoundBoardPinController> pin_controller, uint8_t address, std::string name, std::chrono::milliseconds deactivation_time, u_int id)
-:
-pin_controller(std::move(pin_controller)), detail::Item(std::move(name)), DriverBoardItem(pin_controller, address), deactivation_time(deactivation_time), id(id)
+: detail::Item(std::move(name)), DriverBoardItem(address), pin_controller(std::move(pin_controller)), deactivation_time(deactivation_time), id(id)
 {
   CLOG(INFO, OUTPUT_LOGGER) << "Created sound " << id << " with name " << name << " and address " << address;
 }