Controlling LED Using ESP8266 and Blynk Application

  Introduction To Blynk

1. Setting Up Blynk App

 Install Blink app from play store  or ios store 

Create your Account 

After that choose New project then, enter the project name which you like

Choose Device as NodeMCU and connection type as Wi-Fi

Then click create 

After that a authentication code is sent to your registered E-mail ID 

2. Creating Buttons 

Click on Add button and choose Button

Then click on the button you created and provide name for button

In output session choose Digital PIN and D1 PWM

In MODE swap to SWITCH that's it

You can configure other 3 buttons like this by changing D2, D3, D4 PWM or whatever you want.

Coding To ESP8266

Connect NODE ESP8266 to PC

Open Arduino In top Sketch > Include Library > Manage library

Search For Blynk Then install The latest Version

Go To File > Examples > Blynk > Boards_WiFi > ESP8266_standalone

In the Code Modify --

After that Provide Your Auth Code That you get from registering in Blynk

// You should get Auth Token in the Blynk App.

// Go to the Project Settings (nut icon).

char auth[] = "YourAuthToken";

Eg:

char auth[] = "7816d601drd348876af72848024ec1e0";

Change This also:

// Your WiFi credentials.

// Set password to "" for open networks.

char ssid[] = "YourNetworkName";

char pass[] = "YourPassword";

Provide Your Wi-Fi ssid and password

Eg:

char ssid[] = "My-Wi-Fi";

char pass[] = "HelloWorld123";

Hit The Upload Button. In the case of any error during uploading you can refer This

Connection for LED

connect like this.

Refer my video

Hope You Enjoy!