#define pinLedRed 9
#define pinLedGreen 7
void setup() {
  // put your setup code here, to run once:
pinMode(pinLedRed, OUTPUT);
pinMode(pinLedGreen, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
digitalWrite(pinLedRed, HIGH);
digitalWrite(pinLedGreen, LOW);
delay(1000);
digitalWrite(pinLedRed, LOW);
digitalWrite(pinLedGreen, HIGH);
delay(1000);
}