Control LED from Your Phone in Just Minutes!💡📲 | ESP8266 + Blynk for Beginners

How to Control LED using ESP8266 + Blynk IOT 

This project demonstrates how to control an LED using your smartphone through the Blynk app and an ESP8266 (NodeMCU) board. It's beginner-friendly and a great introduction to IoT and home automation using Blynk

Components Required 

- ESP8266 NodeMCU

 - LED 

- 220 Ohm Resistor

 - Breadboard and Jumper Wires 

- Smartphone with Blynk App Installed 

- Micro USB Cable

STEPS TO CONTROL LED USING BLYNK APP 

Step:1 

OPEN https://blynk.io/ 

Signup using your email id 

Step:2

follow the tutorial to setup the Blynk App to control LED

Step:3

copy

#define BLYNK_TEMPLATE_ID "TMPL22B8JI4Gr"

#define BLYNK_TEMPLATE_NAME "Home automation series"

and Token 

Step:4

CODE Below

 

Step:5

confirm the board and port before uploading the code 

board: esp8266 > NodeMCU 1.0

port: check it in device manager and ports 

Step:6

now check in Blynk iot > my device > device should be online and connected to your wifi 

try to switch on and off to check whether the LED is Blinking or Not, if not try to check the steps clearly 

Step:7

open Blynk app in Mobile and follow the tutorial 

Step:8 

now your successfully able to control the LED using your Mobile. 

Step:9

DO SUBSCRIBE AND LIKE THIS VIDEO 

Circuit Diagram:

Code:

// TECH WITH REDDIX 2024

// Use for Educational purpose only

//@techwithreddix follow on Instagaram

#define BLYNK_TEMPLATE_ID "TMPL2zBvoHbGd"

#define BLYNK_TEMPLATE_NAME "Home automation series" // TECH WITH REDDIX

#define BLYNK_PRINT Serial

#include <ESP8266WiFi.h>

#include <BlynkSimpleEsp8266.h>

#define LED_PIN 5  // D1 is GPIO5

char auth[] = "nd5XBGvSHgjblsrQt-M7mt-trSOO8tmm"; // Blynk Auth Token

char ssid[] = "Godreddix";  // WiFi SSID

char pass[] = "1234567890"; // WiFi Password

BLYNK_WRITE(V1) {

  int buttonState = param.asInt();

  digitalWrite(LED_PIN, buttonState);

}

void setup() {

  Serial.begin(115200);

  pinMode(LED_PIN, OUTPUT);

  digitalWrite(LED_PIN, LOW);  // Ensure LED starts OFF

  Blynk.begin(auth, ssid, pass, "blynk.cloud", 80);

}

void loop() {

  Blynk.run();

}

// TECH WITH REDDIX