#include <SoftwareSerial.h>
SoftwareSerial serial(1, 0); //PIN 12 AND PIN 13 ATTINY44

const int LED_BLUE   = 2;
const int LED_GREEN = 3;

int i = 0;
 
void setup() {
  // put your setup code here, to run once:
  serial.begin(9600);
  
  pinMode(LED_BLUE,   OUTPUT);
  pinMode(LED_GREEN, OUTPUT);
}

void loop() 
{
    for(i=300;i>10;i=i-10)
    {                   
        digitalWrite(LED_BLUE,1);
        delay(i);
        digitalWrite(LED_BLUE,0); 
        delay(i);   
    }     
}