ESP8266 Wifi NodeMcu V3 (CH340)

The ESP8266 NodeMCU V3 (CH340) is a versatile WiFi development board designed for IoT and embedded wireless applications. It integrates the ESP8266 WiFi SoC with a USB-to-serial CH340 chip, allowing easy programming and communication with a PC via USB.

This board supports the IEEE 802.11 b/g/n WiFi standard and includes a built-in TCP/IP stack, enabling multiple network connections for client/server applications. It offers flexible operating modes including Station (STA), Access Point (AP), and combined STA+AP mode, making it suitable for a wide range of wireless projects.

With multiple GPIO pins supporting PWM, I2C, SPI, and UART communication, as well as a 10-bit ADC input, the NodeMCU V3 provides strong flexibility for hardware interfacing. It also supports OTA (Over-The-Air) firmware updates, Smart Config (Smart Link) networking, and fast wireless data transfer.

Powered via USB or external input (4.5V–9V), the board is compatible with Arduino IDE and Lua firmware, making it easy for beginners and professionals to develop IoT applications.

Specifications

• Model: ESP8266 NodeMCU V3 (CH340)
• Microcontroller: ESP8266
• WiFi Standard: 802.11 b/g/n
• USB-to-Serial Chip: CH340
• Flash Memory: 4MB (32Mbits)
• Operating Modes: STA / AP / STA+AP
• GPIO Pins: D0 – D8, SD1 – SD3
• ADC Input: 1 Channel (A0)
• Communication Interfaces: UART, GPIO, PWM, I2C, SPI
• Operating Voltage: 4.5V – 9V (10V max)
• USB Power Supply: Supported
• Current Consumption:
  • Transmission: ~70mA (max 200mA)
  • Standby: <200µA
• Baud Rate: 110 – 460800 bps
• Operating Temperature: -40°C to +125°C
• OTA Support: Yes
• Driver Support: CH340 / CH341 (Windows & macOS)

Applications

• IoT smart home systems
• Wireless sensor networks
• Remote monitoring and control
• Smart lighting systems
• Home automation projects
• Web servers and cloud IoT devices
• Robotics and automation systems
• Wireless data logging
• Educational electronics projects
• Smart agriculture systems