Product Description
The NodeMCU ESP8266 V3 is a popular open-source development board centered around the ESP8266 Wi-Fi SoC. Equipped with the CH340 USB-to-Serial converter, it eliminates the need for a separate adapter, enabling easy connection to your computer for programming and debugging. The board comes with factory-installed Lua firmware, which lets you quickly start building IoT applications using Lua scripting. It also supports development in Arduino IDE, MicroPython, and platform-IO.
With built-in Wi-Fi connectivity, multiple GPIO pins, ADC, PWM, I2C, and SPI interfaces, this board is ideal for connected embedded projects, remote sensors, home automation systems, cloud-enabled devices, and web-based control dashboards.
Key Features
Based on ESP8266 Wi-Fi System-on-Chip
Built-in CH340 USB-to-Serial converter
Onboard Wi-Fi antenna
Lua firmware pre-installed (optional Arduino/MicroPython)
Multiple GPIOs with ADC, PWM, I2C, SPI
Easy USB connection for power & programming
Breadboard-friendly form factor
Package Includes
1 × NodeMCU ESP8266 V3 Wi-Fi Dev. Board (USB cable may vary)
Technical Specifications
Parameter | Specification |
MCU | ESP8266 Wi-Fi SoC |
USB Interface | CH340 USB-to-Serial |
Wi-Fi | 802.11 b/g/n |
GPIO | Multiple GPIOs with I2C, SPI, PWM, ADC |
Operating Voltage | 3.3V |
Flash Memory | Typically 4 MB |
Protocol Support | TCP/IP, HTTP, MQTT |
Development Support | Arduino IDE, Lua, MicroPython |
Dimensions | ~49 × 26 mm |
Applications
IoT Wi-Fi sensor nodes
Home automation controllers
Remote monitoring systems
Web server on microcontroller
Smart switches & relays
Cloud-connected embedded projects