diff --git a/touchcontroller/touchcontroller.ino b/touchcontroller/touchcontroller.ino
index 0874cd3..4045261 100644
--- a/touchcontroller/touchcontroller.ino
+++ b/touchcontroller/touchcontroller.ino
@@ -8,11 +8,10 @@ uint16_t countedLow[INPUTS]; //count the times input was below threshold (touche
 #define COUNTEDLOWTHRESHOLD 10 //how many times input has to be sampled as low in a row to count as real touch. 
 // Inputdelay is given by: COUNTEDLOWTHRESHOLD*ADCREADINTERVAL
 
-long last_adcmicros=0;
+unsigned long last_adcmicros=0;
 #define ADCREADINTERVAL 2000 //in microseconds. interval to read all adc values
 
-boolean inputchangeFlag; //flag to update keypress
-long last_send=0;
+unsigned long last_send=0;
 #define MINIMUMSENDDELAY 10 //in milliseconds. minimum delay between serial sends
 
 void setup() {
@@ -28,7 +27,7 @@ void setup() {
 }
 
 void loop() {
-  long loopmillis=millis();
+  unsigned long loopmillis=millis();
 
   // ## Sampling and Touch Filtering ##
   if (micros()-last_adcmicros>=ADCREADINTERVAL) 
@@ -52,34 +51,30 @@ void loop() {
         countedLow[i]++; //increase counter
         if (countedLow[i]>=COUNTEDLOWTHRESHOLD) { //upper limit
           countedLow[i]=COUNTEDLOWTHRESHOLD; //upper limit. prevent overflow
-          inputchangeFlag=true; //flag to update keypress
         }
       }else{ //released or not pressed hard enough
         countedLow[i]=0; //reset counter
-        inputchangeFlag=true; //flag to update keypress
       }
     }
     
   }
 
+  // ## Calculate Byte ##
+  byte newTouch=0;
+  for (uint8_t i=0;i<INPUTS;i++){ //for all keys
+    if (countedLow[i]>=COUNTEDLOWTHRESHOLD) { //key pressed/touched
+      newTouch^=1<<i;
+    }
+  }
+
   // ## Send to Raspberry ##
-  if (inputchangeFlag) { //something changed
-    if (loopmillis-last_send>MINIMUMSENDDELAY) //delay between last send long enough
-    { 
-      touchOut = 0; //reset bits
-      for (uint8_t i=0;i<INPUTS;i++){ //for all keys
-        if (countedLow[i]>=COUNTEDLOWTHRESHOLD) { //key pressed/touched
-          touchOut^=1<<i;
-          //Serial.print("1");
-        }//else{
-          //Serial.print("0");
-        //}
-      }
-      //Serial.println(touchOut, BIN);
-      //Serial.println();
-      Serial.write(touchOut);
+  if (loopmillis-last_send>MINIMUMSENDDELAY) //delay between last send long enough
+  { 
+    if (newTouch!=touchOut) { //touched keys have changed
+      touchOut=newTouch; //update
       last_send=loopmillis;
-      inputchangeFlag=false; //clear Flag
+      //Serial.println(touchOut, BIN);
+      Serial.write(touchOut); //Send byte
     }
   }