/*
 * This ESP32 code is created by esp32io.com
 *
 * This ESP32 code is released in the public domain
 *
 * For more detail (instruction and wiring diagram), visit https://esp32io.com/tutorials/esp32-controls-fan
 */

#define RELAY_PIN  13  // ESP32 pin GIOP13, which connects to the IN pin of relay

// the code in setup function runs only one time when ESP32 starts
void setup() {
  // initialize digital pin A5 as an output.
  pinMode(RELAY_PIN, OUTPUT);
}

// the code in loop function is executed repeatedly infinitely
void loop() {
  digitalWrite(RELAY_PIN, HIGH); // turn on fan 10 seconds
  delay(10000);
  digitalWrite(RELAY_PIN, LOW);  // turn off fan 10 seconds
  delay(5000);
}