int key1 = 6;
int key1_st;
int on_off;

int key2 = 8;
int key2_st;
int key2_mode;

int ledZ = 3;
int ledK = 5;
unsigned long ttek = 0;
unsigned long tpred = 0;
unsigned long delta;

void setup() {
  // put your setup code here, to run once:
  pinMode(key1, INPUT_PULLUP);
  pinMode(ledZ, OUTPUT);
  pinMode(ledK, OUTPUT);
  Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
  ttek = millis();
  delta = ttek-tpred;
  key1_st = digitalRead(key1);
  key2_st = digitalRead(key2);
  if (key1_st == 0)
    {
      if (on_off == 1)
      {on_off = 0;}
      else {on_off = 1;}
    }
 if ((key2_st == 0) and (key2_mode == 0))
    {key2_mode = 1;}
 else if ((key2_st == 0) and (key2_mode == 1))
    {key2_mode = 2;} 
 else if ((key2_st == 0) and (key2_mode == 2))
    {key2_mode = 3;}
 else if ((key2_st == 0) and (key2_mode == 3))
    {key2_mode = 0;}   

  if((on_off == 1) and (key2_mode == 0))
     { digitalWrite(ledK,0);
       digitalWrite(ledZ,0);}
  if((on_off == 1) and (key2_mode == 1))
     {  if(delta > 0 && delta < 230 )
   { digitalWrite(ledK,1);} 
   if (delta >= 230 && delta < 800 )
    { digitalWrite(ledK,0);}} 
  if((on_off == 1) and (key2_mode == 2))
     { if (delta > 0 && delta < 400 )
   { digitalWrite(ledZ,0);}
   if (delta >= 400 && delta < 1600 )
   { digitalWrite(ledZ,1);} }
  if((on_off == 1) and (key2_mode == 3))
     {  if(delta > 0 && delta < 230 )
   { digitalWrite(ledK,1);} 
   if (delta >= 230 && delta < 800 )
    { digitalWrite(ledK,0);}
   if (delta > 0 && delta < 400 )
    { digitalWrite(ledZ,0);}
   if (delta >= 400 && delta < 1600 )
   { digitalWrite(ledZ,1);} 
  
  
  }






/*
 if (on_off == 1)
   {
     if(delta > 0 && delta < 230 )
  { digitalWrite(ledK,1);} 
 if (delta >= 230 && delta < 800 )
  { digitalWrite(ledK,0);}

  if (delta > 0 && delta < 400 )
  { digitalWrite(ledZ,0);}
 if (delta >= 400 && delta < 1600 )
  { digitalWrite(ledZ,1);} 
   }
   else
    {digitalWrite(ledK,0);
    digitalWrite(ledZ,0);
    }*/

//




   if (delta>1600 )
    { tpred = millis();}

   Serial.print("key1_st  ");
   Serial.print(key1_st);
   Serial.print("    on_off ");
   Serial.print(on_off);

   Serial.print("    key2_st  ");
   Serial.print(key2_st);
   Serial.print("    key2_mode ");
   Serial.println(key2_mode);



}