diff --git a/src/Sound4Calc.c b/src/Sound4Calc.c
index e755f0e..9e6c4d3 100755
--- a/src/Sound4Calc.c
+++ b/src/Sound4Calc.c
@@ -1,4 +1,3 @@
-
 #include "addresses.h"
 #include "Sound4Calc.h"
 
@@ -39,14 +38,16 @@ int main(void)
             case KEY_RIGHT : sleep+=5; break;
             case KEY_LEFT : sleep-=5; break;
             case KEY_EXE :
-            while(1)
+            i=0;
+            while(i<50000)
             {
-
-                ResetPin();
-                timer_start(TIMER_USER, sleep, Clock_Hz, SetPin, 1000);
+               // ResetPin();  
+                timer_start(TIMER_USER, sleep, Clock_Hz, ResetPin, 0);
+                SetPin();
+                i++;
 
             }
-            //timer_stop(1);
+            timer_stop(TIMER_USER);
             break;
             case KEY_EXIT :
             return 1;