diff --git a/code/src/main.c b/code/src/main.c
index 8e18d94..6e8f577 100644
--- a/code/src/main.c
+++ b/code/src/main.c
@@ -2,24 +2,23 @@
 #include <stdint.h>            // has to be added to use uint8_t
 #include <avr/interrupt.h>    // Needed to use interrupts
 #include <avr/sleep.h>
+#include <avr/eeprom.h>
+
+uint8_t EEMEM on_off_state;
+uint8_t anim_nr = 0;
 
 unsigned long NextVal(void);
-unsigned long InitSeed();
+unsigned long InitSeed(void);
 void random(void);
-void link_rechts(void);
+void links_rechts(void);
 
-int (*animation)(void) = &link_rechts;
+void (*animation[4])(void);
 
-volatile uint8_t leds = 0x00;
-volatile uint8_t leds_active = 0x00;
+volatile uint32_t leds = 0x00;
 
 volatile uint32_t active_count = 0;     
 volatile uint32_t active_count_max = 13733; // 1 count = 0,065536 s
 
-volatile uint8_t debounce_lock = 0;
-volatile uint8_t debounce_count = 0;
-volatile uint8_t debounce_count_max = 10;
-
 volatile uint16_t count = 0;
 volatile uint16_t count_max = 3;
 
@@ -42,89 +41,110 @@ void random(){
     int temp;
     do{
         temp=NextVal();
-        temp=1 << (temp%8);
+        temp=1 << (temp%18);
     }while(temp==leds);
     leds=temp; 
 }
 
-void link_rechts(){
+void links_rechts(){
     if(dir)
         leds = leds << 1;
     else
         leds = leds >> 1;
 
-    if(!(leds & 0x7F)){
+    if(!(leds & 0x1FFFF)){
         leds = 0x08;
         dir^=1;
     }
 }
 
-void write_leds(){
-    if(leds_active){
-        PORTC = leds;
-        PORTD = (leds>>1)&((1<<PD1)|(1<<PD2)|(1<<PD3));
-        PORTD = (leds)&((1<<PD5)|(1<<PD6));
-    }
-    else
-    {
-        PORTC = 0;
-        PORTD = 0;
-    }
+void write_leds(void){
+    PORTD = leds & 0xFF;
+    PORTC = (leds>>8) & 0x3F;
+    PORTB = (leds>>14) & 0x07;
 }
 
 int main(void)
 {
+    animation[0] = links_rechts;
+    animation[1] = random;
+
+    // reset switch as on/off switch
+    if(eeprom_read_byte(&on_off_state)){
+        eeprom_write_byte(&on_off_state, 0);
+    }
+    else{
+        eeprom_write_byte(&on_off_state, 1);
+        set_sleep_mode(SLEEP_MODE_PWR_SAVE);
+        sleep_mode();
+        // power consumption is below 1uA
+    }
+
     InitSeed();
     DDRC = 0xFF;
     DDRD = 0xFF;
+    DDRB = 0x07;
 
-    DDRB &= ~(1 << DDB0); // Clear the PB0, PB1, PB2 pin
+    //DDRB &= ~(1 << DDB0); // Clear the PB0, PB1, PB2 pin
     // PB0,PB1,PB2 (PCINT0, PCINT1, PCINT2 pin) are now inputs
 
-    PORTB |= ((1 << PORTB0) | (1 << PORTB1) | (1 << PORTB2)); // turn On the Pull-up
+    //PORTB |= ((1 << PORTB0) | (1 << PORTB1) | (1 << PORTB2)); // turn On the Pull-up
     // PB0, PB1 and PB2 are now inputs with pull-up enabled
 
-    TIMSK1 |= 1 << TOIE1;
+    //TIMSK1 |= 1 << TOIE1;
 
     TCCR0B |= (1<<CS01)|(1<<CS00); 
     TIMSK0 |= 1 << TOIE0;
 
-    PCICR |= (1 << PCIE0);     // set PCIE0 to enable PCMSK0 scan
-    PCMSK0 |= (1 << PCINT0);   // set PCINT0 to trigger an interrupt on state change
+    //PCICR |= (1 << PCIE0);     // set PCIE0 to enable PCMSK0 scan
+    //PCMSK0 |= (1 << PCINT0);   // set PCINT0 to trigger an interrupt on state change
+    
+    ADCSRA |= (1<<ADEN) | (1<<ADPS1) | (1<<ADPS0);
+	ADMUX  = 1<<REFS0;
+	ADMUX  |= 6;
 
     sei();                     // turn on interrupts
 
     while(1)
     {
         write_leds();
-    }
-}
-
-ISR (PCINT0_vect)
-{
-    if(!debounce_lock){
-        TCCR1B |= (1<<CS00); 
-        debounce_lock=1;
-        if((~PINB & 0x01)) 
-        {
-            leds_active ^= 0x01;
-            active_count=0;
-            if(!leds_active){
-                write_leds();
-                TCCR0B &= ~((1<<CS01)|(1<<CS00)); 
-                set_sleep_mode(SLEEP_MODE_PWR_SAVE);
-                sleep_mode();
-                TCCR0B |= (1<<CS01)|(1<<CS00); 
-            }
+        ADCSRA |= 1<<ADSC;
+        while(ADCSRA & (1<<ADSC));
+        if(ADC < 512){
+            if(ADMUX & 0x01)
+                anim_nr = 0;
+            else
+                anim_nr = 1;
         }
+        ADMUX ^= 0x01;
     }
 }
 
+//ISR (PCINT0_vect)
+//{
+//    if(!debounce_lock){
+//        TCCR1B |= (1<<CS00); 
+//        debounce_lock=1;
+//        if((~PINB & 0x01)) 
+//        {
+//            leds_active ^= 0x01;
+//            active_count=0;
+//            if(!leds_active){
+//                write_leds();
+//                TCCR0B &= ~((1<<CS01)|(1<<CS00)); 
+//                set_sleep_mode(SLEEP_MODE_PWR_SAVE);
+//                sleep_mode();
+//                TCCR0B |= (1<<CS01)|(1<<CS00); 
+//            }
+//        }
+//    }
+//}
+
 ISR(TIMER0_OVF_vect){
     active_count++;
     if(count>=count_max){
         count=0;
-        animation();
+        (*animation[anim_nr])();
     }
     else
     {
@@ -132,20 +152,21 @@ ISR(TIMER0_OVF_vect){
     }
     if(active_count >= active_count_max){
         active_count=0;
-        leds_active = 0;
+        //leds_active = 0;
+        //TODO maybe sleep here
     }
 }
 
-ISR(TIMER1_OVF_vect){
-    if(debounce_count >= debounce_count_max)
-    {
-        TCCR1B &= ~(1<<CS00); 
-        debounce_lock=0;
-        debounce_count=0;
-    }
-    else
-    {
-        debounce_count++;
-    }
-}
+//ISR(TIMER1_OVF_vect){
+//    if(debounce_count >= debounce_count_max)
+//    {
+//        TCCR1B &= ~(1<<CS00); 
+//        debounce_lock=0;
+//        debounce_count=0;
+//    }
+//    else
+//    {
+//        debounce_count++;
+//    }
+//}