NodeMCU ESP8266 V3 WiFi Development Board (CH340)

NodeMCU ESP8266 V3 WiFi Development Board — CH340

The NodeMCU ESP8266 V3 with CH340 USB-to-UART chip is a popular and affordable WiFi development board for IoT enthusiasts. Powered by the AI-Thinker ESP8266MOD module, it connects to any 2.4GHz WiFi network and is programmable directly via Micro-USB using the Arduino IDE. The CH340 driver is widely supported on Windows, macOS, and Linux, making it a hassle-free choice for beginners and experienced makers alike.

Key Features

• Module: AI-Thinker ESP8266MOD (ESP-12E)
• USB-to-UART: CH340 (CH340G)
• Clock Speed: 80 MHz / 160 MHz
• Flash Memory: 4 MB
• WiFi: 802.11 b/g/n, 2.4 GHz
• Operating Voltage: 3.3V (5V input via onboard regulator)
• GPIO Pins: 11 digital I/O, 1 analog input (A0)
• Supports: PWM, I2C, SPI, UART
• Programming: Arduino IDE, MicroPython, NodeMCU Lua firmware
• Interface: Micro-USB
• Buttons: FLASH and RST

Typical Applications

• IoT sensors and smart home automation
• Web servers and REST API clients
• MQTT-based data logging
• WiFi-controlled relays and actuators
• Wireless weather stations and monitors