diff --git a/main.c b/main.c
index 2817f07..9c20380 100644
--- a/main.c
+++ b/main.c
@@ -1,6 +1,7 @@
 #define F_CPU 8000000UL
 #include <util/delay.h>
 #include <avr/io.h>
+#include <avr/interrupt.h>
 
 #define PATTERN_COUNT 4
 
@@ -11,31 +12,68 @@ typedef struct
 	unsigned char b;
 	int time_hold;
 }rgbval;
+volatile uint16_t ms;
+volatile int  counts;
+
+
+
+ISR(TIMER0_OVF_vect)
+{
+		count();
+}
+void count(void)
+{
+	//counts=0;//0..65535 
+	counts++;
+	if(counts>=31)
+	{
+			counts=0;
+			if(ms<60000)//1 minute
+			{
+					ms++;
+			}
+			else
+			{
+					ms=0;
+			}
+	}
+
+}
+
+
+
 
 int main (void) {            // (2)
 
-	rgbval pattern[6][PATTERN_COUNT]={	{{0,0,0,0},		{0,0,0,0},		{0,0,0,0},		{0,0,0,0}},
-										{{1,1,1,1},		{1,1,153,2}, 	{200,50,39,1}, 	{204,255,153,2}},
-	/*rgbval pattern2[PATTERN_COUNT]=*/{{1,1,1,1},		{10,255,0,1},	{1,1,255,2},	{1,200,1,2}},
-	/*rgbval pattern3[PATTERN_COUNT]=*/{{1,1,5,1},		{1,1,255,1},		{1,1,5,1},		{1,1,255,1}},
-										{{252,102,3,1},	{161,67,47,1},	{118,120,74,1},	{83,120,74,2}},
-										{{87,119,122,1}, {95,87,122,1},	{52, 69, 56,1},	{83, 84, 72,1}}};
+	rgbval pattern[6][PATTERN_COUNT]={	{{0,0,0,10},		{0,0,0,10},		{0,0,0,10},		{0,0,0,10}},
+										{{1,1,1,10},		{1,1,153,20}, 	{200,50,39,10}, 	{204,255,153,20}},
+										{{1,1,1,10},		{10,255,0,10},	{1,1,255,20},	{1,200,1,20}},
+										{{1,1,5,10},		{1,1,255,10},	{1,1,5,10},		{1,1,255,10}},
+										{{252,102,3,10},	{161,67,47,10},	{118,120,74,10},	{83,120,74,20}},
+										{{87,119,122,10}, {95,87,122,10},	{52, 69, 56,10},	{83, 84, 72,10}}};
 	//rgbval *pattern=pattern1[0];
 	int i=0,i2=0,i3;
 	int r,g,b = 0;
 	int set=0;
 	int input=0;
-//system_clock prescaler
-
+	uint16_t pre_delay=0;
+	ms =0;
+	counts = 0;
+	 
+//disable prescaler	
+	CLKPR = (1<<CLKPR);
+	 CLKPR = 0x00;
 //#######OC0A auf ausgang
 	DDRB = (1 << PB0 )|(1<<PB1)|(1<<PB4);
+	cli();
 //#######Timer0-setup#####			|Phase correct pwm
-	TCCR0A = (1<<COM0A1)|(1<<COM0B1)|(1<<WGM00);	//mode
-	TCCR0B = (1<<CS01);//|(1<<CS02);				//frequency /8
+	TCCR0A = (1<<COM0A1)|(1<<COM0B1)|(1<<WGM00)|(1<<WGM00);	//mode
+	TCCR0B = (1<<CS00)|(1<<CS00);				//frequency /256 = 31250Hz , 1 t0 period = 8.192ms 1 increment = 0.032ms strangly prescaler of 1 results in expected results as prescaler was 256
+
 //	PLLCSR |= (1 << PLLE) | (1 << PCKE);
 //######Timer1-setup
 
-	TCCR1 = (1<<COM0A0)|(1<<COM0A1)|(1<<COM0B0)|(1<<COM0B1)|(1<<CTC1)|(1<<CS12)|(1<<CS10);//|(1<<CS11)|(1<<CS13);	//frequencyi //iinverting PWM because 0 dtc not possible
+	TCCR1 = (1<<COM1A0)|(1<<COM1A1)|(1<<CTC1)|(1<<CS12)|(1<<CS10);//|(1<<CS11)|(1<<CS13);	//frequencyi //iinverting PWM because 0 dtc not possible
 	GTCCR = (1<<PWM1B)|(1<<COM1B0);				//mode + overrun clear, Set on compare match
 	OCR1C = 255;						// clear timer at 255	
 //######PWM_VALUE$
@@ -47,20 +85,25 @@ int main (void) {            // (2)
 //######Configure Pullups
 	PORTB |= (1<<PB2);
 
+	//enable global interrupts
+		  //Interupts
+	TIMSK |= (1<<TOIE0);//interrupt on overflow = one timer cycle
+	TIFR |= (1<<TOV0);
+	TCNT0 = 0;
+sei();
    while(1)
    {
 
-
-
-	   for(i=0;i<PATTERN_COUNT;i++)
+	   for(i=1;i<PATTERN_COUNT;i++)
 	   {
 		r = pattern[i2][i].r;
 		g = pattern[i2][i].g;
 		b = pattern[i2][i].b;
 		if(i==(PATTERN_COUNT-1)) {i= -1;}
-
+		//reset timer counter	
 		while(1)
 		{
+				//input handling
 				input=PINB;
 			   if(((input & (1<<PB2)) == 0 && set==0))
 				{
@@ -86,18 +129,29 @@ int main (void) {            // (2)
 			   {
 					set=0;
 			   
-			   }
-		if(r < pattern[i2][i+1].r) {r++;}
-		if(r > pattern[i2][i+1].r) {r--;}	
-		if(g < pattern[i2][i+1].g) {g++;}
-		if(g > pattern[i2][i+1].g) {g--;}	
-		if(b < pattern[i2][i+1].b) {b++;}
-		if(b > pattern[i2][i+1].b) {b--;}	
-		
-		OCR0A = g;//green
-		OCR0B = r;//red
-		OCR1B = b;//blue
-		_delay_ms(10);
+				}
+
+			   //Pattern handling
+			  
+
+								
+						
+				if(r < pattern[i2][i+1].r) {r++;}
+				if(r > pattern[i2][i+1].r) {r--;}	
+				if(g < pattern[i2][i+1].g) {g++;}
+				if(g > pattern[i2][i+1].g) {g--;}	
+				if(b < pattern[i2][i+1].b) {b++;}
+				if(b > pattern[i2][i+1].b) {b--;}	
+						
+				OCR0A = g;//green
+				OCR0B = r;//red
+				OCR1B = b;//blue
+			//	:wq
+			//	_delay_ms(10);	
+				pre_delay = ms;		
+			//	:wq
+			while((ms-pre_delay) < pattern[i2][i+1].time_hold){};
+
 	  	if(r == pattern[i2][i+1].r && g == pattern[i2][i+1].g && b == pattern[i2][i+1].b) break;
 		}
 	   }
@@ -106,3 +160,4 @@ int main (void) {            // (2)
    
    return 0;                 
 }
+