#define LED 12
#define GROUND 13
void setup() {
// put your setup code here, to run once:
//Serial.begin(9600);
//Serial.println("Hello, ESP32!");
pinMode(LED, OUTPUT);
pinMode(GROUND, OUTPUT);
//Using another pin as ground instead of the GND pin.
digitalWrite(GROUND, LOW);
}
void loop() {
// put your main code here, to run repeatedly:
digitalWrite(LED, HIGH);
delay(1000);
digitalWrite(LED, LOW);
delay(1000);
}