diff --git a/src/MotorController.cpp b/src/MotorController.cpp
index d03ae0a..fec7060 100644
--- a/src/MotorController.cpp
+++ b/src/MotorController.cpp
@@ -24,11 +24,7 @@ void MotorController::loadDefaults()
 
 void MotorController::setTargetSpeed(int targetSpeedPercent)
 {
-    if (targetSpeed != targetSpeedPercent)
-    {
-        Serial.print("MC: set targetSpeed to: ");
-        Serial.println(targetSpeed);
-    }
+
     targetSpeed = constrain(targetSpeedPercent, 0, 100);
 }
 
@@ -109,14 +105,6 @@ int MotorController::applyDynamicResponse(int targetPercent)
     smoothedPromille += delta;
     lastUpdateTime = currentTime;
 
-    // Debug-Ausgabe
-    Serial.print("TargetPromille: ");
-    Serial.print(targetPromille);
-    Serial.print(", Delta: ");
-    Serial.print(delta);
-    Serial.print(", SmoothedPromille: ");
-    Serial.println(smoothedPromille);
-
     // Rückgabe in Prozent (gerundet)
     return (smoothedPromille + 5) / 10; // Rundung durch Addition von 5 vor Division
 }
diff --git a/src/main.cpp b/src/main.cpp
index 64b7a35..a45f2f9 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -111,7 +111,21 @@ void loop()
   }
   else if (serialControlEnabled)
   {
-    // Serial control active, do nothing here; speed controlled via serial commands
+    static int lastSpeed = 0;
+    int currSpeed = motor.getSpeed();
+
+    if (lastSpeed > currSpeed)
+    {
+      Serial.print("Decreased Speed to: ");
+      Serial.println(currSpeed);
+      lastSpeed = currSpeed;
+    }
+    else if (lastSpeed < currSpeed)
+    {
+      Serial.print("Increased Speed to: ");
+      Serial.println(currSpeed);
+      lastSpeed = currSpeed;
+    }
   }
   else
   {
@@ -254,14 +268,10 @@ void handleSerialInput()
     case '+':
       serialControlEnabled = true;
       motor.setTargetSpeed(motor.getSpeed() + 1);
-      Serial.print("Increased Speed to: ");
-      Serial.println(motor.getSpeed());
       break;
     case '-':
       serialControlEnabled = true;
       motor.setTargetSpeed(motor.getSpeed() - 1);
-      Serial.print("Decreased Speed to: ");
-      Serial.println(motor.getSpeed());
       break;
     case '0':
     case '1':
@@ -300,6 +310,6 @@ void printHelp()
 
 void configurePWMFrequency()
 {
-  // Configure Timer1 for higher PWM frequency (e.g., ~8 kHz)
-  TCCR1B = (TCCR1B & 0b11111000) | 0x01; // Set prescaler to 1
+  // Configure Timer1 for higher PWM frequency (~4 kHz)
+  TCCR1B = (1<<CS11); // Set prescaler to 8
 }