int x = 0;
void setup() {
pinMode(0, OUTPUT);
pinMode(1, OUTPUT);
pinMode(6, OUTPUT);
pinMode(3, OUTPUT);
pinMode(4, OUTPUT);
pinMode(5, OUTPUT);
digitalWrite(1, HIGH);
digitalWrite(5, HIGH);
attachInterrupt(digitalPinToInterrupt(2), isr, HIGH);
}

void loop() {
digitalWrite(1, HIGH);
digitalWrite(5, HIGH);
if (x==1) {delay(3000);
digitalWrite(1, LOW);
digitalWrite(6, HIGH);
delay(3000);
digitalWrite(6, LOW);
digitalWrite(3, HIGH);
delay(1000);
digitalWrite(4, HIGH);
digitalWrite(5, LOW);
delay(3000);
digitalWrite(4, LOW);
digitalWrite(5, HIGH);
delay(3000);
digitalWrite(6, HIGH);
delay(3000);
digitalWrite(3, LOW);
digitalWrite(6, LOW);
digitalWrite(1, HIGH);
x = 0;
}}
void isr() {
x = 1;
}