#define Led_RED PB2
#define Led_GREEN PB1
#define Led_BLUE PB0

void setup() {
  pinMode(Led_RED, OUTPUT);
  pinMode(Led_GREEN, OUTPUT);
  pinMode(Led_BLUE, OUTPUT);
}

void loop() {
  digitalWrite(Led_BLUE, LOW);
  digitalWrite(Led_RED, HIGH);
  delay(1000);
  digitalWrite(Led_RED, LOW);
  digitalWrite(Led_GREEN, HIGH);
  delay(1000);
  digitalWrite(Led_GREEN, LOW);
  digitalWrite(Led_BLUE, HIGH);
  delay(1000);
}