diff --git a/examples/MultipleScenesSD/MultipleScenesSD.ino b/examples/MultipleScenesSD/MultipleScenesSD.ino
index 861f969..c38e803 100644
--- a/examples/MultipleScenesSD/MultipleScenesSD.ino
+++ b/examples/MultipleScenesSD/MultipleScenesSD.ino
@@ -16,7 +16,7 @@
 
 #define SERVO_PIN 3
 #define CS_PIN 4
-#define SCENE_AMOUNT 2
+#define SCENE_AMOUNT = 2
 
 // Servo object to send positions
 Servo myServo;
diff --git a/src/BlenderServoAnimation.cpp b/src/BlenderServoAnimation.cpp
index 15e7e0f..cfdb090 100644
--- a/src/BlenderServoAnimation.cpp
+++ b/src/BlenderServoAnimation.cpp
@@ -322,16 +322,16 @@ Scene *BlenderServoAnimation::getCurrentScene() {
   return this->scene;
 }
 
-void BlenderServoAnimation::onPositionChange(PositionCallback callback) {
-  this->servoManager.setPositionCallback(callback);
+void BlenderServoAnimation::onPositionChange(pcb positionCallback) {
+  this->servoManager.setPositionCallback(positionCallback);
 }
 
-void BlenderServoAnimation::onModeChange(ModeCallback callback) {
-  this->modeCallback = callback;
+void BlenderServoAnimation::onModeChange(mcb modeCallback) {
+  this->modeCallback = modeCallback;
 }
 
-void BlenderServoAnimation::onSceneChange(SceneCallback callback) {
-  this->sceneCallback = callback;
+void BlenderServoAnimation::onSceneChange(scb sceneCallback) {
+  this->sceneCallback = sceneCallback;
 }
 
 void BlenderServoAnimation::changeMode(byte mode) {
diff --git a/src/BlenderServoAnimation.h b/src/BlenderServoAnimation.h
index a8bcc20..5524443 100644
--- a/src/BlenderServoAnimation.h
+++ b/src/BlenderServoAnimation.h
@@ -1,7 +1,7 @@
 #include "AnimationData.h"
 #include "Scene.h"
 #include "ServoManager.h"
-#include "CommonTypes.h"
+#include "typedefs.h"
 #include <Arduino.h>
 #include <stdarg.h>
 
@@ -31,9 +31,9 @@ class BlenderServoAnimation {
 
   void addScene(const byte *data, int size, byte fps, int frames);
   void addScene(Stream &stream, byte fps, int frame);
-  void onPositionChange(PositionCallback callback);
-  void onModeChange(ModeCallback callback);
-  void onSceneChange(SceneCallback callback);
+  void onPositionChange(pcb positionCallback);
+  void onModeChange(mcb modeCallback);
+  void onSceneChange(scb sceneCallback);
   void run(unsigned long currentMicros = micros());
   void play();
   void playSingle(byte index);
@@ -65,8 +65,8 @@ class BlenderServoAnimation {
 
   bool *playedIndexes = nullptr;
 
-  ModeCallback modeCallback = nullptr;
-  SceneCallback sceneCallback = nullptr;
+  mcb modeCallback = nullptr;
+  scb sceneCallback = nullptr;
 
   byte mode = MODE_DEFAULT;
 
diff --git a/src/CommonTypes.h b/src/CommonTypes.h
deleted file mode 100644
index f19eac3..0000000
--- a/src/CommonTypes.h
+++ /dev/null
@@ -1,10 +0,0 @@
-#include <Arduino.h>
-
-#ifndef BlenderServoAnimationLibrary_CommonTypes_H
-#define BlenderServoAnimationLibrary_CommonTypes_H
-
-typedef void (*ModeCallback)(byte, byte);
-typedef void (*PositionCallback)(byte, int);
-typedef void (*SceneCallback)(byte, byte);
-
-#endif // BlenderServoAnimationLibrary_CommonTypes_H
diff --git a/src/Servo.cpp b/src/Servo.cpp
index 42bd969..6d86537 100644
--- a/src/Servo.cpp
+++ b/src/Servo.cpp
@@ -1,10 +1,10 @@
 #include "Servo.h"
-#include "CommonTypes.h"
+#include "typedefs.h"
 #include <Arduino.h>
 
 using BlenderServoAnimationLibrary::Servo;
 
-Servo::Servo(byte id, PositionCallback callback, byte threshold) {
+Servo::Servo(byte id, pcb positionCallback, byte threshold) {
   this->id = id;
   this->positionCallback = positionCallback;
   this->setThreshold(threshold);
@@ -53,8 +53,8 @@ bool Servo::isNeutral() {
   return this->currentPosition == this->neutralPosition;
 }
 
-void Servo::setPositionCallback(PositionCallback callback) {
-  this->positionCallback = callback;
+void Servo::setPositionCallback(pcb positionCallback) {
+  this->positionCallback = positionCallback;
 }
 
 void Servo::setThreshold(byte value) {
diff --git a/src/Servo.h b/src/Servo.h
index cd64150..1470cf3 100644
--- a/src/Servo.h
+++ b/src/Servo.h
@@ -1,4 +1,4 @@
-#include "CommonTypes.h"
+#include "typedefs.h"
 #include <Arduino.h>
 
 #ifndef BlenderServoAnimationLibrary_Servo_H
@@ -9,13 +9,13 @@ namespace BlenderServoAnimationLibrary {
 class Servo {
 
 public:
-  Servo(byte id, PositionCallback callback, byte threshold = 0);
+  Servo(byte id, pcb positionCallback, byte threshold = 0);
 
   void move(int position, bool useOffset = true);
   void moveTowardsNeutral();
   void setThreshold(byte value);
   void setOffset(int offset);
-  void setPositionCallback(PositionCallback callback);
+  void setPositionCallback(pcb positionCallback);
 
   bool isNeutral();
 
@@ -32,7 +32,7 @@ class Servo {
   int currentPosition = -1;
   int offset = 0;
 
-  PositionCallback positionCallback = nullptr;
+  pcb positionCallback = nullptr;
 
   bool positionExceedsThreshold(int position);
 };
diff --git a/src/ServoManager.cpp b/src/ServoManager.cpp
index fc547e4..d9eba8f 100644
--- a/src/ServoManager.cpp
+++ b/src/ServoManager.cpp
@@ -11,11 +11,11 @@ ServoManager::~ServoManager() {
   }
 }
 
-void ServoManager::setPositionCallback(PositionCallback callback) {
-  this->positionCallback = callback;
+void ServoManager::setPositionCallback(pcb positionCallback) {
+  this->positionCallback = positionCallback;
 
   for (byte i = 0; i < this->servoAmount; i++) {
-    this->servos[i]->setPositionCallback(callback);
+    this->servos[i]->setPositionCallback(positionCallback);
   }
 }
 
diff --git a/src/ServoManager.h b/src/ServoManager.h
index 3f67bb3..11f8b98 100644
--- a/src/ServoManager.h
+++ b/src/ServoManager.h
@@ -1,7 +1,7 @@
 #include "AnimationData.h"
 #include "Command.h"
 #include "Servo.h"
-#include "CommonTypes.h"
+#include "typedefs.h"
 #include <Arduino.h>
 
 #ifndef BlenderServoAnimationLibrary_ServoManager_H
@@ -14,7 +14,7 @@ class ServoManager {
 public:
   ~ServoManager();
 
-  void setPositionCallback(PositionCallback callback);
+  void setPositionCallback(pcb positionCallback);
   void setDefaultThreshold(byte value);
   void setThreshold(byte servoId, byte value);
   void setOffset(byte servoId, int offset);
@@ -28,7 +28,7 @@ class ServoManager {
 
   Command command;
 
-  PositionCallback positionCallback = nullptr;
+  pcb positionCallback = nullptr;
 
   byte servoAmount = 0;
   byte defaultThreshold = 0;
diff --git a/src/typedefs.h b/src/typedefs.h
new file mode 100644
index 0000000..d9e464a
--- /dev/null
+++ b/src/typedefs.h
@@ -0,0 +1,5 @@
+#include <Arduino.h>
+
+typedef void (*mcb)(byte, byte); // Mode callback
+typedef void (*pcb)(byte, int);  // Position callback
+typedef void (*scb)(byte, byte); // Scene callback