Step-by-Step Guide to Create Project
STEP 1: Create Blynk Account using https://blynk.cloud/dashboard/register
STEP 2: Install latest Blynk Libraries in Arduino IDE
STEP 3: Write Arduino Code to control GPIO2 Pin on NodeMCU ESP8266
STEP 4: Install Blynk IoT App in Mobile Phone https://play.google.com/store/apps/details?id=cloud.blynk
STEP 5: Click "Add new device" and configure WiFi
STEP 6: Create Mobile App Project and Control LED