diff --git a/lib/treppe/treppe.cpp b/lib/treppe/treppe.cpp
index 118edf7..032d82a 100644
--- a/lib/treppe/treppe.cpp
+++ b/lib/treppe/treppe.cpp
@@ -355,7 +355,7 @@ void Treppe::setup() {
   // see also lib/PCA9685-Arduin/PCA9685.h:204
   pwmController.init(PCA9685_PhaseBalancer_None);
   // pwmController.init(PCA9685_PhaseBalancer_Linear);
-  pwmController.setPWMFrequency(100);
+  pwmController.setPWMFrequency(200);
   // pwmController.setAllChannelsPWM(idle_pwm);
 
   // WARNING: before getting Parameters of Flash, make sure plausible parameters
diff --git a/src/main.cpp b/src/main.cpp
index 6504ddb..700d7c3 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -22,7 +22,7 @@ extern "C" {
 #include "treppe.h"
 os_timer_t timer1;
 uint8_t timer_flag = 0;
-Treppe stairs(16);
+Treppe stairs(12);
 
 // WIFI
 const char *ssid = STASSID;