View source for ESP8266(NodeMCU) Kit

== Overview ==

The '''NodeMCU''' is a compact and low-cost development board based on the '''ESP8266''' Wi-Fi chip. It is widely used in IoT (Internet of Things) projects to connect devices to the internet. The board has built-in '''Wi-Fi''', a '''USB port''', and can be programmed easily using the '''Arduino IDE'''.

It is ideal for beginners who want to build smart devices such as Wi-Fi switches, wireless sensors, or simple automation systems.

=== NodeMCU vs ESP32 – Basic Difference ===
* '''NodeMCU''' is best for simple, single-task Wi-Fi projects.
* '''ESP32''' is more advanced with more '''GPIO pins''', '''Bluetooth''', and '''faster processing'''.
* Start with NodeMCU for learning, and upgrade to ESP32 for complex tasks.


== What's Included ==

This kit contains:
* ESP8266 (NodeMCU) development board (with built-in Wi-Fi and Bluetooth)
* Common sensors (temperature, motion, light, etc.)
* LEDs, buzzer, and push buttons
* Jumper wires
* USB cable for power and programming


== Specifications ==
{| class="wikitable" style="width:100%; text-align:left;"
! #
! Attribute
! Details
|-
| 1 || Weight || 510 g (gram)
|-
| 2 || Length x Width X Height || 14.8 cm x 15.2 cm x 7.4 cm (external)
|-
| 3 || Color (container) || White
|-
| 4 || Operating Voltage || 3.0V – 3.6V (typically 3.3V)
|-
| 5 || Connectivity || Micro USB: Data and Power
|-
| 6 || Microcontroller Pins || 
'''Data''': 15 pins 
'''VCC''': 4 pins  
'''Ground''': 4 pins
|-
| 7 || Buzzer pins || Ground: 1, Data: 1
|-
| 8 || Push Button pins || 
Data: 4  
Ground: 1  
3.3v: 1
|-
| 9 || LED pins || Ground: 1, Data: 4
|-
| 10 || LDR pins || Ground: 1, Data: 1, 3.3v: 1
|-
| 11 || Board Color || Black
|}


== Applications of NodeMCU (ESP8266) ==

The '''NodeMCU''' board is suitable for a wide range of real-world IoT applications due to its built-in Wi-Fi and ease of use. Below are some common applications:

* '''Home Automation''' – Control lights, fans, or appliances remotely via mobile.
* '''Wireless Sensors''' – Send temperature, humidity, or air quality data online.
* '''IoT Devices''' – Create internet-connected devices that can be monitored or controlled.
* '''Weather Stations''' – Measure weather data and display it on websites or apps.
* '''Smart Security Systems''' – Motion sensors, door locks, and alarms with phone alerts.
* '''Remote Monitoring''' – Access data from sensors or devices anywhere in the world.
* '''Wi-Fi Robots''' – Control robots or cars over Wi-Fi using a smartphone.
* '''Cloud Data Logging''' – Send data to platforms like ThingSpeak, Blynk, or Firebase.
* '''Smart Farming''' – Automate watering systems based on soil data.
* '''STEM Learning Projects''' – Great for schools and college IoT learning modules.


== Quick Installation Guide – NodeMCU (ESP8266) ==

Follow these steps to set up your NodeMCU board and use Cognifront's example code and IoT cloud service.

=== Step 1: Install Arduino IDE ===
* Download from: [https://www.arduino.cc/en/software Arduino Official Site]

=== Step 2: Add ESP8266 Board URL ===
# Open Arduino IDE
# Go to ''File → Preferences''
# In ''Additional Boards Manager URLs'', paste:
  <code>http://arduino.esp8266.com/stable/package_esp8266com_index.json</code>
# Click ''OK''

=== Step 3: Install ESP8266 Board ===
* Go to ''Tools → Board → Boards Manager''
* Search for '''ESP8266'''
* Click ''Install'' on '''esp8266 by ESP8266 Community'''

=== Step 4: Connect NodeMCU ===
* Use a USB cable that supports data transfer to connect the board

=== Step 5: Select Board and Port ===
* Go to ''Tools → Board → NodeMCU 1.0 (ESP-12E Module)''
* Go to ''Tools → Port →'' and select the correct COM port

=== Step 6: Upload Example Code ===
* Cognifront provides ready-to-use code for IoT applications
* Download the code from their official site:
  * [https://www.cognifront.com/download.php Cognifront ESP Kit Page]
  * Navigate to the ''Download'' section
* Open the downloaded file in Arduino IDE and click '''Upload'''

=== Cognifront IoT Cloud Server ===
* Cognifront offers its own '''IoT cloud platform'''
* It is '''free and open to all users'''
* Simply log in at: [https://www.cognifront.com/apps/iotcloud/ Cognifront IoT Cloud]
* Use it to monitor your devices, sensors, and controls from anywhere