diff --git a/Sender/Sender.ino b/Sender/Sender.ino
deleted file mode 100644
index 3c0e651..0000000
--- a/Sender/Sender.ino
+++ /dev/null
@@ -1,129 +0,0 @@
-// Breadboard
-//int enable = 2;
-//int sTx = 4;
-//int sRx = 5;
-
-// RS485-Nano Revision 1.0
-int enable = 9;
-int sTx = 8;
-int sRx = 3;
-
-// Für Controllino könnte man benutzen: sRx = 20, sTx = 21, enable = 53
-
-int in1 = 4; // o
-int in2 = 5; // |o
-int in3 = 6; // ||o
-int in4 = 7; // |||o
-//              ↓↓↓↓
-int irq = 2;// ←++++
-
-long base = 1000;
-
-int id = 0;
-int baud = 115200;
-char c;
-int counter = 0;
-bool reg1=false,reg2=false,reg3=false,reg4=false;
-
-void setup(){
-  Serial.begin(baud);  
-  pinMode(A0,INPUT);
-  id = analogRead(A0);
-  
-  pinMode(enable,OUTPUT);
-  digitalWrite(enable,LOW);
-  
-  pinMode(sTx,OUTPUT);
-  digitalWrite(sTx,LOW);
-
-  pinMode(in1,INPUT);
-  pinMode(in2,INPUT);
-  pinMode(in3,INPUT);
-  pinMode(in4,INPUT);
-
-  pinMode(irq,INPUT);
-  attachInterrupt(digitalPinToInterrupt(irq),interrupt,RISING);
-  
-  pinMode(sRx,INPUT);
-  Serial.print("Baud rate set to ");
-  Serial.println(baud);
-  Serial.print("Initialized Arduino #");
-  Serial.println(id);
-}
-
-void interrupt(){
-  Serial.println("Interrupt");
-  reg1 = digitalRead(in1);
-  reg2 = digitalRead(in2);
-  reg3 = digitalRead(in3);
-  reg4 = digitalRead(in4);
-  
-}
-bool sendBit(bool bt){
-  digitalWrite(sTx,bt);
-  delayMicroseconds(80);
-  if (digitalRead(sTx) != bt) return false;
-  delayMicroseconds(base-80);
-  return true;
-}
-
-bool sendChar(char c){
-  return sendBit(c & 0x01)
-      && sendBit(c & 0x02)
-      && sendBit(c & 0x04)
-      && sendBit(c & 0x08)
-      && sendBit(c & 0x10)
-      && sendBit(c & 0x20)
-      && sendBit(c & 0x40)
-      && sendBit(c & 0x80);
-}
-
-bool sendString(String s){
-  Serial.print("Sending '"+s+"'…");
-  boolean busy = false;
-  for (int i = 0; i<11; i++){
-    if (!digitalRead(sRx)) {
-      if (!busy){
-        Serial.print("busy…");
-        busy = true;
-      }
-      i = 0; // wait for free line
-    }
-    delayMicroseconds(base);
-  }
-  digitalWrite(enable,HIGH);
-  bool success = sendBit(0); // erste Flanke erzeugen
-  if (success) {
-    for (char c : s){
-      if (!sendChar(c)){
-        success = false;
-        break;
-      }
-    }
-  }
-  success = success && sendChar(13);
-  success = success && sendBit(1); // letzte Flanke erzeugen
-  digitalWrite(enable,LOW);
-  Serial.println(success ? "success" : "failed");
-  return success;
-}
-
-void loop(){
-  if (reg1){
-    reg1 = false;
-    sendString("t:02:01");
-  }
-  if (reg2){
-    reg2 = false;
-    sendString("t:02:02");
-  }
-  if (reg3){
-    reg3 = false;
-    sendString("t:02:03");
-  }
-  if (reg4){
-    reg4 = false;
-    sendString("t:02:04");
-  }
-  
-}
diff --git a/Software/Sender/Sender.ino b/Software/Sender/Sender.ino
index 253f6fa..97af85b 100644
--- a/Software/Sender/Sender.ino
+++ b/Software/Sender/Sender.ino
@@ -1,8 +1,9 @@
 /*
- *  Demonstrates how to use LCDisplay in conjunction with SoftRS485:
+ *  Demonstrates how to use Read Buttons in conjunction with SoftRS485:
  *
- *  The main _loop_ of this program listens on the RS485 bus.
- *  Whenever a message is received from the bus, it is displayed on the LCD.
+ * If a button is pressed, a corresponding flag is set.
+ * The main loop checks for the state of those flags and
+ * sends a message on the RS485 bus whenever a flag is set.
  */
 
 // include the library code:
@@ -31,7 +32,7 @@ unsigned long times[8];
 
 
 
-void setup() {
+void setup(){
   Serial.begin(115200);
   init485(Max485_RO,Max485_RE,Max485_DE,Max485_DI); // library initialization:
   pinMode(BTN_INT,INPUT_PULLUP);
@@ -73,7 +74,7 @@ void isr(){
 #ifdef SEND_485
 void send(int btn){
   String s = "{nano:"+String(ID)+",btn:"+String(btn)+"}";
-  for (int i = 0; i<10; i++){    
+  for (int i = 0; i<10; i++){
     if (send485(s.c_str())) break;
     Serial.println("collision detected, trying again:");
   }