Tekko BDSimSimulatorProjects

ESP32: MQTT দিয়ে বাতি চালাওESP32: control a light over MQTT

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যা যা লাগবে · Parts you need

Code (Arduino C++)

#include <WiFi.h>
#include <PubSubClient.h>
WiFiClient net;
PubSubClient mqtt(net);

void onMessage(char* topic, byte* payload, unsigned int length) {
  String msg = "";
  for (unsigned int i = 0; i < length; i++) msg += (char)payload[i];
  Serial.println(msg);
  digitalWrite(2, msg == "ON" ? HIGH : LOW);
}

void setup() {
  Serial.begin(115200);
  pinMode(2, OUTPUT);
  WiFi.begin("Tekko-WiFi", "12345678");
  while (WiFi.status() != WL_CONNECTED) delay(200);
  Serial.println("WiFi connected");
  mqtt.setServer("broker.hivemq.com", 1883);
  mqtt.setCallback(onMessage);
  while (!mqtt.connect("tekko-esp32")) delay(500);
  mqtt.subscribe("tekko/led");
  Serial.println("Open IoT → MQTT and send ON / OFF");
}

void loop() {
  mqtt.loop();
}

ভিডিও · Videos

ESP32 MQTT Tutorial Sensor Data & LED Control with MQTT Bhai AppGetting Started with ESP32 & MQTT: The Complete Beginner's Guide

আরো project · More projects