ESP8266 CH340 NodeMCU Wifi Module

ESP8266 CH340 NodeMCU WiFi Module is an open-source, low-cost Internet of Things (IoT) development board based on the ESP-12E module containing the ESP8266 Wi-Fi chip. Integrated with a CH340 USB-to-Serial converter, dual power regulators, and breadboard-friendly pin headers, it allows students, developers, and hobbyists to easily build wireless smart devices, remote sensor monitoring nodes, and home automation systems using the Arduino IDE, MicroPython, or Lua.

Features

• Powered by the ESP8266 32-bit RISC microcontroller (Tensilica L106) operating up to 160 MHz
• Built-in 802.11 b/g/n Wi-Fi transceiver with integrated antenna for wireless networking
• CH340 USB-to-Serial IC for reliable computer connectivity and easy programming
• Onboard 3.3V LDO linear regulator for direct USB 5V power supply input
• Breadboard-friendly dual inline package (DIP) pin configuration
• Supports GPIO, PWM, I2C, SPI, UART, and 1 ADC channel (A0)
• Integrated CP2102/CH340 micro-USB or Type-C port for power and programming
• Full support for Station (STA), Access Point (AP), and Wi-Fi Direct modes
• Fully compatible with Arduino IDE, MicroPython, ESP-IDF, and NodeMCU Lua firmware
• Supports OTA (Over-The-Air) firmware updates over Wi-Fi

Applications

• Smart home automation systems controlling relays, lights, and appliances via Wi-Fi
• Remote environmental sensing (DHT22, DS18B20, gas sensors) with cloud data logging (Blynk, ThingSpeak, Adafruit IO)
• Microcontroller-based student, polytechnic diploma, and university IoT projects
• Wireless web servers, Wi-Fi access points, and HTTP/MQTT API client nodes
• Smart agriculture, automated greenhouse monitoring, and Wi-Fi water level indicators
• Wireless robotics, remote RC vehicles, and Wi-Fi telemetry systems

Important Notes:

• Install the CH340 USB driver on your computer if the board is not recognized by your OS or Arduino IDE upon plugging in.
• The operating logic level of the ESP8266 is 3.3V; applying 5V logic signals directly to the GPIO pins without level shifters can permanently damage the chip.
• Keep sensor voltage on Analog Pin A0 under 3.3V max (NodeMCU board includes an internal voltage divider network, but direct voltages over 3.3V can damage the pin).
• Select "NodeMCU 1.0 (ESP-12E Module)" under Tools -> Board in the Arduino IDE before uploading code.
• Ensure a stable power supply (at least 500mA @ 5V) during active Wi-Fi transmission bursts to prevent brownout resets.
• Always connect external sensors, relay modules, and microcontrollers to a common GND with the NodeMCU board.

Package includes

• 1 x ESP8266 CH340 NodeMCU WiFi Module