ESP32 4 RELAY Control (Blynk)

 ESP32 4 RELAY Control  (Blynk)

Wokwi程式

#define BLYNK_PRINT Serial

#define BLYNK_TEMPLATE_ID         "TMPL6LesDW5_h"

#define BLYNK_TEMPLATE_NAME       "ESP32 4 Relay"

#define BLYNK_AUTH_TOKEN          "UehmJvhbd6YtPkMQHkxF2t6iYdWQm__d"

#include <WiFi.h>

#include <WiFiClient.h>

#include <BlynkSimpleEsp32.h>

#define BLYNK_PRINT Serial

char ssid[] = "Wokwi-GUEST";

char pass[] = "";

BlynkTimer timer;

// Define the pins for 4 relays

#define relay1 2

#define relay2 15

#define relay3 4

#define relay4 5

#define buttonPin 12 // Pin for the button to control all relays

int SW_relay1 = 0;

int SW_relay2 = 0;

int SW_relay3 = 0;

int SW_relay4 = 0;

BLYNK_WRITE(V1)

{

  SW_relay1 = param.asInt();

  controlRelay(relay1, SW_relay1, V1);

}

BLYNK_WRITE(V2)

{

  SW_relay2 = param.asInt();

  controlRelay(relay2, SW_relay2, V2);

}

BLYNK_WRITE(V3)

{

  SW_relay3 = param.asInt();

  controlRelay(relay3, SW_relay3, V3);

}

BLYNK_WRITE(V4)

{

  SW_relay4 = param.asInt();

  controlRelay(relay4, SW_relay4, V4);

}

BLYNK_WRITE(V5)

{

  int value = param.asInt();

  if (value == 1)

  {

    // Set all relays to ON

    digitalWrite(relay1, HIGH);

    digitalWrite(relay2, HIGH);

    digitalWrite(relay3, HIGH);

    digitalWrite(relay4, HIGH);

  }

  else

  {

    // Set all relays to OFF

    digitalWrite(relay1, LOW);

    digitalWrite(relay2, LOW);

    digitalWrite(relay3, LOW);

    digitalWrite(relay4, LOW);

  }

  Blynk.virtualWrite(V1, value);

  Blynk.virtualWrite(V2, value);

  Blynk.virtualWrite(V3, value);

  Blynk.virtualWrite(V4, value);

}

void controlRelay(int pin, int state, int virtualPin)

{

  if (state == 1)

  {

    digitalWrite(pin, HIGH);

    Serial.println("Relay terbuka");

    Blynk.virtualWrite(virtualPin, HIGH);

  }

  else

  {

    digitalWrite(pin, LOW);

    Serial.println("Relay tertutup");

    Blynk.virtualWrite(virtualPin, LOW);

  }

}

void setup()

{

  // put your setup code here, to run once:

  Serial.begin(115200);

  Serial.println("ESP32 Blynk");

  pinMode(relay1, OUTPUT);

  pinMode(relay2, OUTPUT);

  pinMode(relay3, OUTPUT);

  pinMode(relay4, OUTPUT);

  pinMode(buttonPin, INPUT_PULLUP); // Set buttonPin as input with internal pull-up resistor

  Blynk.begin(BLYNK_AUTH_TOKEN ,ssid, pass);

}

void loop()

{

  // put your main code here, to run repeatedly:

  Blynk.run();

  timer.run();

}