diff --git a/lib/treppe/treppe.cpp b/lib/treppe/treppe.cpp
index ef5703f..8e08e38 100644
--- a/lib/treppe/treppe.cpp
+++ b/lib/treppe/treppe.cpp
@@ -69,13 +69,13 @@ void Treppe::start_animation()
 
   if (fsm_outputs.dimmrichtung == DR_AUFDIMMEN)
   {
-    start_pwm = idle_brightness;
+    start_pwm = idle_bright_internal;
     ziel_pwm = active_brightness;
   }
   else
   {
     start_pwm = active_brightness;
-    ziel_pwm = idle_brightness;
+    ziel_pwm = idle_bright_internal;
   }
 
   current_tick = 0;
@@ -193,7 +193,7 @@ bool Treppe::check_ldr()
     active = 1;
   if (ldr > ldr_schwelle + LDR_HYS)
     active = 0;
-
+  activate_idle_pwm(active);
   return active;
 }
 
@@ -258,6 +258,17 @@ void Treppe::set_idle_pwm(uint16_t _idle_brightness)
   berechne_dimmer();
   Serial.printf("Treppe: idle_brightness=%d\n", idle_brightness);
 }
+
+void Treppe::activate_idle_pwm(bool active){
+  static uint8_t former_active = 0;
+
+  if(active != former_active && fsm_outputs.status == ST_RUHEZUSTAND){
+    idle_bright_internal = idle_brightness * active;
+    // Dimming Function for all LEDS ?
+    pwmController.setAllChannelsPWM(idle_bright_internal);
+    former_active = active;
+  }  
+}
 void Treppe::set_active_pwm(uint16_t _active_brightness)
 {
   active_brightness = _active_brightness;
diff --git a/lib/treppe/treppe.h b/lib/treppe/treppe.h
index a6ab33e..38cbf8f 100644
--- a/lib/treppe/treppe.h
+++ b/lib/treppe/treppe.h
@@ -7,7 +7,7 @@
 
 #define LDR_HYS 5.0  // Hysteresis for switching off FSM [lux]
 
-#define SENSOR_OBEN 2
+#define SENSOR_OBEN 16
 #define SENSOR_UNTEN 12
 #define OE 14
 
@@ -81,6 +81,7 @@ public:
 
     // Parameter section
     void set_idle_pwm(uint16_t _idle_brightness);
+    void activate_idle_pwm(bool active);
     void set_active_pwm(uint16_t _active_brightness);
     void set_time_per_stair(uint16_t _time_per_stair);
 };
\ No newline at end of file