diff --git a/lib/PCA9685-Arduino b/lib/PCA9685-Arduino
index a70be39..23e06c0 160000
--- a/lib/PCA9685-Arduino
+++ b/lib/PCA9685-Arduino
@@ -1 +1 @@
-Subproject commit a70be39257e317d35e9118b385006a1e030e6452
+Subproject commit 23e06c06a6026801a856141f64a6de54dd493b47
diff --git a/lib/treppe/treppe.cpp b/lib/treppe/treppe.cpp
index 8aa7466..a46dc12 100644
--- a/lib/treppe/treppe.cpp
+++ b/lib/treppe/treppe.cpp
@@ -140,9 +140,11 @@ void Treppe::setup(){
     // https://github.com/NachtRaveVL/PCA9685-Arduino/issues/15
     // see also lib/PCA9685-Arduin/PCA9685.h:204
     pwmController.init(PCA9685_PhaseBalancer_None);
-    pwmController.setPWMFrequency(200);
+    //pwmController.init(PCA9685_PhaseBalancer_Linear);
+    pwmController.setPWMFrequency(100);
     pwmController.setAllChannelsPWM(idle_brightness);
-
+    
+    pinMode(A0, INPUT);
     pinMode(SENSOR1, INPUT);
     pinMode(SENSOR2, INPUT);
     pinMode(OE, OUTPUT);
@@ -196,6 +198,7 @@ void Treppe::task(){
   last_sensor_state[1] = current_sensor_state[1];
   
   ledsequence();
+
 }
 
 
diff --git a/lib/treppe/treppe.h b/lib/treppe/treppe.h
index 804d525..64fee9c 100644
--- a/lib/treppe/treppe.h
+++ b/lib/treppe/treppe.h
@@ -2,7 +2,7 @@
 
 #include "PCA9685.h"
 
-#define SENSOR1 16
+#define SENSOR1 2
 #define SENSOR2 12
 #define OE 14
 
@@ -12,8 +12,8 @@ class Treppe {
 private:
     uint8_t stairs;
     uint16_t time_per_stair = 300;          // dimmtime per stair [ms]
-    uint16_t idle_brightness = 0;
-    uint16_t active_brightness = 500;
+    uint16_t idle_brightness = 100;
+    uint16_t active_brightness = 2048;
 
     uint8_t direction = 0;
     uint8_t switch_direction = 0;