Product Overview
The ESP8266 NodeMCU Lua V3 is a powerful and cost-effective WiFi development board designed for rapid IoT prototyping. It integrates the ESP8266EX chip with a CH340 USB-to-serial interface, allowing direct programming via USB.
With built-in WiFi, multiple GPIOs, and support for Arduino IDE, this board is widely used for smart home systems, wireless monitoring, and automation applications.
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Key Features
• Integrated WiFi (802.11 b/g/n)
• Based on ESP8266EX high-performance chip
• CH340 USB-to-Serial converter (plug & play)
• Supports Arduino IDE and Lua programming
• Multiple GPIO pins for expansion
• Built-in voltage regulator
• Breadboard-friendly design
• Compact and lightweight
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Technical Specifications
• Chipset: ESP8266EX
• WiFi Standard: 802.11 b/g/n
• Operating Voltage: 3.3V
• Input Voltage: 5V via Micro USB
• USB Interface: CH340
• Flash Memory: 4MB (typical)
• Clock Speed: 80 MHz / 160 MHz
• GPIO Pins: ~11 digital I/O
• Analog Input: 1 channel (A0)
• Communication: UART, SPI, I2C, WiFi
• Antenna: Built-in PCB antenna
• Logic Level: 3.3V (not 5V tolerant)
• Dimensions: Approx. 58 × 31 mm
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Pin Configuration
• VIN: Power input
• GND: Ground
• 3V3: Regulated output
• D0–D8: Digital I/O pins
• RX / TX: Serial communication
• A0: Analog input
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Applications
• IoT (Internet of Things) systems
• Smart home automation
• Wireless sensor networks
• Remote monitoring systems
• Web server applications
• Robotics and automation