diff --git a/es/blatt3/uebung3-2/uebung3-2.ino b/es/blatt3/uebung3-2/uebung3-2.ino
index 47aeb58..9ec5a04 100644
--- a/es/blatt3/uebung3-2/uebung3-2.ino
+++ b/es/blatt3/uebung3-2/uebung3-2.ino
@@ -3,11 +3,6 @@
 // these variables describe the used hardware pins
 // adjust them when you use other pins
 // hardware pins
-int az = 50;
-
-int xout = A1;
-int zout = A3;
-int vref = A0;
 
 // servo
 int servoPin = 11;
@@ -17,37 +12,16 @@ Servo ourServo;
 // don't touch them
 int rc = 1049999;
 
-bool volatile read_ready = false;
-
 /**
  * Setup function for initial setup code
  */
 void setup() {
-  pmc_set_writeprotect(false);
-  pmc_enable_periph_clk(ID_TC0);
-
-  // configure hardware timer
-  TC_Configure(TC1, 0, TC_CMR_WAVE | TC_CMR_WAVSEL_UP_RC | TC_CMR_TCCLKS_TIMER_CLOCK2) ;
-  TC_SetRC(TC1, 0, rc);
-
-  TC1->TC_CHANNEL[0].TC_IER=TC_IER_CPCS;   // IER = interrupt enable register
-  TC1->TC_CHANNEL[0].TC_IDR=~TC_IER_CPCS;
-
-  NVIC_ClearPendingIRQ(TC1_IRQn);
-  NVIC_EnableIRQ(TC1_IRQn);
-
-  // start hardware timer
-  //TC_Start(TC0, 0);
-
   // Configure servo
   ourServo.attach(servoPin);
   ourServo.write(90);
   
-  pinMode(az, OUTPUT);
   pinMode(servoPin, OUTPUT);
   
-  digitalWrite(az, HIGH);
-  
   // initialize serial port
   Serial.begin(9600);
 }
@@ -56,18 +30,19 @@ void setup() {
  * Loop function for main code
  */
 void loop() {
-  for (int i = 0; i < 90; i++) {
-    ourServo.write(90 + i);
+  for (int i = 90; i <= 180; ++i) {
+    ourServo.write(i);
     delay(10);
   }
-  Serial.println(ourServo.read());
-}
-
-/**
- * Used to handle the timer.
- */
-void TC1_Handler()
-{
-  // request static for some magic behind the curtain
-  TC_GetStatus(TC1, 0);
+  delay(1000);
+  for (int i = 180; i >= -180; --i) {
+    ourServo.write(i);
+    delay(10);
+  }
+  delay(1000);
+  for (int i = -180; i <= 90; ++i) {
+    ourServo.write(i);
+    delay(10);
+  }
+  delay(2000);
 }