ESP8266 NodeMCU V3 Lua CH340 Wi-Fi Development Board
Unlock the world of IoT (Internet of Things) with the ESP8266 NodeMCU V3 Development Board. This powerful, open-source platform is the ultimate budget-friendly solution for building smart home devices, wireless sensor networks, and connected projects. Combining the robust ESP-12E Wi-Fi module with the reliable CH340 USB-to-UART bridge, this board offers a seamless plug-and-play experience for creators of all levels.
Key Features
Integrated Wi-Fi Connectivity: Powered by the ESP8266 SoC, featuring a full TCP/IP stack with $802.11\text{ b/g/n}$ support to connect your projects directly to the internet.
Plug-and-Play Simplicity: Equipped with the onboard CH340G USB-to-TTL serial converter and a convenient Micro-USB port for hassle-free programming and power.
Breadboard Friendly: The V3 form factor breaks out all available GPIOs to standard 0.1-inch header pins, making it incredibly easy to prototype on standard breadboards.
Versatile Ecosystem Support: Fully compatible with the Arduino IDE, Lua script firmware, MicroPython, and popular IoT platforms like Blynk, ESPHome, and Home Assistant.
Rich Hardware Interfaces: Features 10 GPIOs, PWM, I2C, SPI, UART, and a 10-bit ADC to interface effortlessly with sensors, displays, and actuators.
Technical Specifications
Feature | Specification |
Microcontroller | Tensilica 32-bit L106 MCU |
Clock Speed | 80MHz (up to 160MHz) |
Flash Memory | 4 MB |
Operating Voltage | 3.3V |
Input Voltage (VIN) | 4.5V – 9V (via Micro-USB or External Pin) |
Digital I/O Pins (GPIO) | 10 (all except D0 support PWM) |
Analog Input Pin (ADC) | 1 (Max 3.3V input on NodeMCU board) |
Wi-Fi Protocols | 802.11 b/g/n (2.4 GHz) |
USB-to-Serial Chip | CH340G |
NodeMCU V3 Pinout Diagram
Understanding your board's layout makes wiring a breeze. Here is a quick breakdown of the essential pins:
Power Pins: 3V3 (3.3V output), GND (Ground), and VIN (External power input).
Control Pins: RST (Reset) and EN (Chip Enable).
I2C Interface: D1 (SCL) and D2 (SDA) — perfect for OLED displays and sensors.
SPI Interface: D5 (CLK), D6 (MISO), D7 (MOSI), and D8 (CS).
Analog Pin: A0 (ADC) for reading variable voltage components like potentiometers or LDRs.
Applications & Use Cases
With its compact size and wireless capabilities, the possibilities are virtually endless. You can use it to build:
Smart Home Automation: Control lights, fans, and appliances remotely or via voice assistants.
Weather Stations: Gather temperature, humidity, and pressure data and upload it to the cloud.
Wireless Data Loggers: Stream real-time sensor metrics directly to a web dashboard.
Wi-Fi Deauther / Network Tools: Explore wireless security testing and network analysis.
Note for Developers: If you are using Windows or macOS, ensure you have the CH340 drivers installed so your computer recognizes the COM port immediately.
Package Includes:
1 x ESP8266 NodeMCU V3 Lua CH340 Wi-Fi Development Board (Headers Pre-soldered)