[arduino code examples for A2v3]-01 Turn ON/OFF OUTPUT

Code:
/**

 * @brief Simple example to control two relays using ESP32

 * @details This program demonstrates how to control two relays connected to GPIO40 and GPIO39

 *          of an ESP32 development board.

 *

 * Made by KinCony IoT: https://www.kincony.com

 */



// Define the GPIO pins for the relays

#define RELAY1_PIN 40  // GPIO40 for Relay 1

#define RELAY2_PIN 39  // GPIO39 for Relay 2



void setup() {

    // Initialize the serial communication for debugging

    Serial.begin(115200);

    Serial.println("ESP32 Relay Control Example");



    // Set the relay pins as output

    pinMode(RELAY1_PIN, OUTPUT);

    pinMode(RELAY2_PIN, OUTPUT);



    // Turn off both relays at startup (assuming active LOW relays)

    digitalWrite(RELAY1_PIN, HIGH);

    digitalWrite(RELAY2_PIN, HIGH);

}



void loop() {

    Serial.println("Turning ON Relay 1");

    digitalWrite(RELAY1_PIN, LOW); // Activate relay 1

    delay(1000); // Wait for 1 second

    

    Serial.println("Turning OFF Relay 1");

    digitalWrite(RELAY1_PIN, HIGH); // Deactivate relay 1

    delay(1000);

    

    Serial.println("Turning ON Relay 2");

    digitalWrite(RELAY2_PIN, LOW); // Activate relay 2

    delay(1000);

    

    Serial.println("Turning OFF Relay 2");

    digitalWrite(RELAY2_PIN, HIGH); // Deactivate relay 2

    delay(1000);

}