int redLED = 12;  
int greenLED = 14; 
void setup() {
Serial.begin(115200);
pinMode(redLED, OUTPUT);
pinMode(greenLED, OUTPUT);
}
void loop() {
digitalWrite(redLED, HIGH);
digitalWrite(greenLED, HIGH);
delay(2000);
digitalWrite(redLED, LOW);
digitalWrite(greenLED, LOW);
delay(1000);
}