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NodeMCU V3 ESP8266 Development Board with CH340 Serial IC WiFi Lua IoT Microcontroller

NodeMCU V3 ESP8266 Development Board with CH340 Serial IC WiFi Lua IoT Microcontroller

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SpecificationDetails
MicrocontrollerESP-12E (Based on ESP8266)
Operating Voltage3.3V
Input Voltage5V (via USB) or 7V–12V (via VIN)
Flash Memory4 MB
Clock Speed80 MHz / 160 MHz
Digital I/O Pins11 (All support PWM, I2C, 1-Wire)
Analog Input1 (Max 1.0V or 3.2V depending on board)
Price
₹ 199.15 ₹ 199.15
(Tax included)

Barcode: 54780

Product Description

The NodeMCU V3 is designed to be breadboard-friendly, with all pins broken out to standard 2.54mm headers. It features an onboard voltage regulator that allows it to be powered directly from a USB cable. Unlike standard microcontrollers, the NodeMCU can act as both a WiFi station (connecting to your router) and a WiFi Access Point (creating its own network). This makes it a perfect choice for wireless web servers, smart home switches, and remote environmental monitoring.

Key Features

  • WiFi Connectivity: Built-in 802.11 b/g/n support for seamless internet and local network communication.

  • Arduino IDE Compatible: Can be programmed just like an Arduino after installing the ESP8266 board package.

  • Plug and Play: The integrated CH340 serial IC allows for direct USB-to-Computer connection without needing external programmers.

  • Low Power Consumption: Supports deep sleep modes, making it suitable for battery-powered sensor nodes.

  • High Memory Capacity: 4MB of flash storage provides plenty of space for complex web server code and large data logs.

Technical Details

  • USB Interface: Micro-USB.

  • Dimensions: 58mm x 31mm (slightly wider than V2).

  • Programming Languages: LUA, MicroPython, C++ (Arduino).

Prototyping and Engineering Tips from Robogears

  • Breadboard Space: Be aware that the V3 (LoLin) version is slightly wider than the V2 (Amica). When placed on a standard breadboard, it will cover all the holes on both sides. Use two breadboards side-by-side or use Female-to-Male Jumper Wires to connect your pins.

  • Logic Level Alert: The NodeMCU is a 3.3V device. Connecting 5V sensors directly to its GPIO pins can damage the ESP8266 chip. Always use a Logic Level Converter for 5V peripherals.

  • Powering for WiFi: WiFi communication causes brief current spikes. If your board keeps resetting during a WiFi.begin() call, ensure your USB cable is of high quality and your power source can provide at least 500mA.

  • The "Flash" Button: If you encounter errors while uploading code, try holding down the FLASH button, clicking upload in your IDE, and then releasing it when the "Writing" process begins.

Package Includes

  • 1 x NodeMCU V3 ESP8266 Development Board (CH340)

Disclaimer

Always double-check your wiring before applying power. Ensure you have the CH340 drivers installed on your computer for the board to be recognized as a COM port.