int ledPin = 7; //pinout of the attiny44 of my hello board

 // the setup function runs once when you press reset or power the board
 void setup() {
 // initialize digital pin LED_BUILTIN as an output.
 
 pinMode(ledPin, OUTPUT);

 }
 
 // the loop function runs over and over again forever
 void loop() {
  digitalWrite (ledPin, HIGH); //encendemos el led
delay(100);
  digitalWrite (ledPin, LOW);//apagamos el led
delay(100);
 }