diff --git a/lichtschranke/polling/polling.ino b/lichtschranke/polling/polling.ino
index 86141f3..763a6fc 100644
--- a/lichtschranke/polling/polling.ino
+++ b/lichtschranke/polling/polling.ino
@@ -18,12 +18,14 @@ unsigned long sw2_lastTimeMicros=0;
 
 float sensordistance = 0.37; //in meters
 
-#define TIMESCOUNT 20
+/*#define TIMESCOUNT 20
 uint8_t times_index=0;
 float times[TIMESCOUNT];
+*/
 
+int serialvalue=0;
 
-
+float kmhtriggermin=15;
 
 void setup() {
   pinMode(PIN_LED, OUTPUT);
@@ -34,9 +36,9 @@ void setup() {
 
   digitalWrite(PIN_FLASH, HIGH);
 
-  for (uint8_t i=0;i<TIMESCOUNT;i++){
+  /*for (uint8_t i=0;i<TIMESCOUNT;i++){
     times[i]=15;
-  }
+  }*/
   
 
   Serial.begin(115200);
@@ -45,6 +47,28 @@ void setup() {
 void loop() {
   //digitalWrite(PIN_LED, sw1_flag);
 
+  while (Serial.available() > 0) {
+    serialvalue = Serial.parseInt();
+    Serial.print("#");
+    Serial.println(serialvalue);
+    if (serialvalue>=1 && serialvalue <= 100){
+      kmhtriggermin=serialvalue;
+      Serial.print("settrigger=");
+      Serial.println(kmhtriggermin);
+    }
+
+    if (serialvalue==-1){
+        digitalWrite(PIN_FLASH, LOW); //Trigger flash
+        delay(100);
+        digitalWrite(PIN_FLASH, HIGH);
+    }
+
+    while (Serial.read() != '\n') {
+      //read until line ended
+    }
+
+  }
+
   if (sw1_released && !digitalRead(PIN_SW1)){ //pressed
     sw1_released=false;
     if (sw1_lastTime+SWDEBOUNCE<millis()){
@@ -92,21 +116,23 @@ void loop() {
 
     if (kmh>=1){
   
-      if (kmh>getTimesMax()){
+      if (kmh>kmhtriggermin){   
+        // kmh>getTimesMax()
         digitalWrite(PIN_FLASH, LOW); //Trigger flash
         delay(100);
         digitalWrite(PIN_FLASH, HIGH);
       }
-  
+
+      Serial.print("speed=");
       Serial.println(kmh);
       //Serial.println(" kmh");
   
   
       //add time to last times queue
-      times_index++;
+      /*times_index++;
       times_index%=TIMESCOUNT-1;
       times[times_index]=kmh;
-  
+      */
       
     }
 
@@ -114,6 +140,8 @@ void loop() {
   
 }
 
+
+/*
 float getTimesMax(){
   float timesmax=0;
   for (uint8_t i=0;i<TIMESCOUNT;i++){
@@ -123,3 +151,4 @@ float getTimesMax(){
   }
   return timesmax;
 }
+*/