diff --git a/data/index.html b/data/index.html
index 4911733..6c818e6 100644
--- a/data/index.html
+++ b/data/index.html
@@ -19,28 +19,35 @@
 
 
   <div class="param_block">
-    Idle Brightness: <output id="out_idl_pwm" class="val_range">50</output> %
+    Idle Brightness Maximum: <output id="out_idl_pwm" class="val_range">50</output> %
+    <label id="note">[100% == Active Brightness]</label>
     <div class="slider">
       <input type="range" class="regler" id="range_idl_pwm" min="0" max="100" value="50">
     </div>
+    <label id="note">idle brightness gets controlled via LDR measurments</label>
   </div>
 
   <div class="param_block">
-    Time per stair: <output id="out_tim_sta" class="val_range">50</output> %
+    Time per stair [ms]: <output id="out_tim_sta" class="val_range">300</output> ms
 
     <div class="slider">
-      <input type="range" class="regler" id="range_tim_sta" min="0" max="100" value="50">
+      <input type="range" class="regler" id="range_tim_sta" min="0" max="5000" value="300">
     </div>
   </div>
 
   <div class="param_block">
-    On Time: <output id="out_tim_on" class="val_range">50</output> %
+    Time LDR [ms]: <output id="out_tim_ldr" class="val_range">500</output> ms
     <div class="slider">
-      <input type="range" class="regler" id="range_tim_on" min="0" max="100" value="50">
+      <input type="range" class="regler" id="range_tim_ldr" min="0" max="5000" value="500">
     </div>
-
   </div>
 
+  <div class="param_block">
+    LDR Schwelle [%]: <output id="out_ldr_shw" class="val_range">50</output> %
+    <div class="slider">
+      <input type="range" class="regler" id="range_ldr_shw" min="0" max="100" value="50">
+    </div>
+  </div>
 
 
   <div class="terminal">
diff --git a/data/input.js b/data/input.js
index 90f546a..f103844 100644
--- a/data/input.js
+++ b/data/input.js
@@ -48,8 +48,8 @@ function rangeToOutput(range, output) {
 rangeToOutput("range_act_pwm", "out_act_pwm");
 rangeToOutput("range_idl_pwm", "out_idl_pwm");
 rangeToOutput("range_tim_sta", "out_tim_sta");
-rangeToOutput("range_tim_on", "out_tim_on");
-
+rangeToOutput("range_tim_ldr", "out_tim_ldr");
+rangeToOutput("range_ldr_shw", "out_ldr_shw");
 
 let xhr = new XMLHttpRequest();
               
diff --git a/data/style.css b/data/style.css
index 96e0d70..5293e0b 100644
--- a/data/style.css
+++ b/data/style.css
@@ -30,7 +30,7 @@ body {
   font-weight: bold;
 }
 
-.regler{
+.regler {
   /* -webkit-appearance: none; */
   height: 50px;
   width: 100%;
@@ -38,6 +38,12 @@ body {
   outline: black;
   background-color: rgb(176, 188, 228);
 }
+
+#note {
+  font-size: medium;
+  font-style: italic;
+}
+
 /* .regler::-webkit-slider-thumb{
   -webkit-appearance: none;
   appearance: none;
@@ -112,8 +118,6 @@ input:checked + .slider:before {
   margin: 2px;
 }
 
-
-
 input[type="number"] {
   width: 100px;
 }
diff --git a/lib/httpserver/httpserver.cpp b/lib/httpserver/httpserver.cpp
index e26d499..f606a58 100644
--- a/lib/httpserver/httpserver.cpp
+++ b/lib/httpserver/httpserver.cpp
@@ -50,9 +50,13 @@ void HTTPServer::start_apps() {
           treppe->set_idle_pwm_max(arg(i).toInt(), VORGABE_PROZENT);
         }
         else if (argName(i).equals("range_tim_sta")) {
+          treppe->set_time_per_stair(arg(i).toInt());
         }
-        else if (argName(i).equals("range_tim_on")) {
-          
+        else if (argName(i).equals("range_tim_ldr")) {
+          treppe->set_time_ldr(arg(i).toInt());
+        }
+        else if (argName(i).equals("range_ldr_shw")) {
+          treppe->set_ldr_schwelle(arg(i).toInt(), VORGABE_PROZENT);
         }
 
       }
diff --git a/lib/treppe/treppe.cpp b/lib/treppe/treppe.cpp
index 8ba75b3..d540af4 100644
--- a/lib/treppe/treppe.cpp
+++ b/lib/treppe/treppe.cpp
@@ -199,7 +199,7 @@ void Treppe::task() {
   uint32_t m = micros();
 #endif
 
-  // TODO wenn LDR geändert => idle_pwm_soll anpassen 
+  // TODO wenn LDR geändert => idle_pwm_soll anpassen
   // fsm_pend.ldr_changed = true;
 
   fsm_inputs.ldr_schwelle = check_ldr();
@@ -327,7 +327,28 @@ void Treppe::set_active_pwm(const uint16_t value,
   Serial.printf("Treppe: parameters.active_pwm=%d\n", parameters.active_pwm);
 }
 
-void Treppe::set_time_per_stair(uint16_t _time_per_stair) {
-  parameters.time_per_stair = _time_per_stair;
+void Treppe::set_time_ldr(const uint16_t value) {
+  parameters.time_ldr = value;
+  if (parameters.time_ldr > TIME_MS_MAX)
+    parameters.time_ldr = TIME_MS_MAX;
+  Serial.printf("Treppe: time_ldr=%d\n", parameters.time_ldr);
+}
+
+void Treppe::set_time_per_stair(const uint16_t value) {
+  parameters.time_per_stair = value;
+  if (parameters.time_per_stair > TIME_MS_MAX)
+    parameters.time_per_stair = TIME_MS_MAX;
   Serial.printf("Treppe: time_per_stair=%d\n", parameters.time_per_stair);
-}
\ No newline at end of file
+}
+
+void Treppe::set_ldr_schwelle(const uint16_t value,
+                              const vorgabe_typ_t vorgabe_typ) {
+  if (vorgabe_typ == VORGABE_PROZENT) {
+    // ?!
+    parameters.ldr_schwelle = 10 * value / 100;
+  } else if (vorgabe_typ == VORGABE_12BIT) {
+    // parameters.ldr_schwelle = value;
+  }
+
+  Serial.printf("Treppe: ldr_schwelle=%d\n", parameters.ldr_schwelle);
+}
diff --git a/lib/treppe/treppe.h b/lib/treppe/treppe.h
index 15d7e20..64c0aca 100644
--- a/lib/treppe/treppe.h
+++ b/lib/treppe/treppe.h
@@ -11,7 +11,8 @@
 #define SENSOR_UNTEN 12
 #define OE 14
 
-#define INT_TIME 20 // interrupt intervall [ms]
+#define INT_TIME 20       // interrupt intervall [ms]
+#define TIME_MS_MAX 5000  // maximum time for animation [ms]
 
 enum vorgabe_typ_t { VORGABE_PROZENT = 0, VORGABE_12BIT = 1 };
 
@@ -96,7 +97,10 @@ public:
   // Parameter section
   void set_idle_pwm_max(const uint16_t value, const vorgabe_typ_t vorgabe_typ);
   void set_active_pwm(const uint16_t value, const vorgabe_typ_t vorgabe_typ);
-  void set_time_per_stair(uint16_t _time_per_stair);
+  
+  void set_time_ldr(const uint16_t value);
+  void set_time_per_stair(const uint16_t value);
+  void set_ldr_schwelle(const uint16_t value, const vorgabe_typ_t vorgabe_typ);
 };
 
 #endif // __TREPPE_H
\ No newline at end of file