NodeMCU ESP8266 Development Board (CH340G V3) – Wi‑Fi IoT Microcontroller Module🌐

The NodeMCU CH340G V3 is a versatile ESP8266-based Wi‑Fi development board designed for rapid prototyping of IoT (Internet of Things) applications. Bridging low-level microcontroller control with high-level connectivity, it’s a reliable platform for smart home devices, wireless sensors, and educational projects. Ideal for both electronics engineers and hobbyists, it integrates seamlessly with popular ecosystems such as the Arduino IDE and common electronics modules.

⚙️ Key Features

• Robust ESP8266 Microcontroller 🧠: Built around the proven ESP8266 with integrated Wi‑Fi, offering ample processing power, multiple I/O, and advanced networking for IoT projects.
• User-Friendly Programming 💻: Compatible with the Arduino IDE, NodeMCU (Lua), and common C/C++ toolchains. Streamlined development and easy firmware upload via USB.
• CH340G USB‑to‑UART Interface 🔌: Onboard CH340G provides reliable serial communication and effortless programming—no external USB‑to‑serial adapter required.
• Generous I/O 🔧: Multiple GPIO lines plus a dedicated ADC input support sensors, actuators, and electronics components such as relays, LEDs, and modules.
• Reliable Wi‑Fi Connectivity 📶: 802.11 b/g/n for remote monitoring, control, and data logging—connect devices to cloud dashboards or local networks with ease.
• Compact, project-ready design 📏: A space-efficient board that fits neatly into prototypes, enclosures, and smart devices.

📐 Technical Specifications

• Microcontroller: ESP8266
• USB‑to‑UART Bridge: CH340G
• Wi‑Fi Protocol: 802.11 b/g/n
• Digital I/O Pins: 11
• Analog Input Pins: 1 (ADC)
• Flash Memory: 4MB
• Operating Voltage: 3.3V
• Input Voltage: 5V (via USB)
• Dimensions: 58 × 31 mm

🔧 Engineer’s Notes

• Logic levels: I/O operates at 3.3V. Protect pins from 5V signals; use level shifters when interfacing 5V modules or Raspberry Pi GPIO as needed.
• Drivers: The CH340G may require a USB driver on some Windows/macOS systems.
• Power: For stable Wi‑Fi, ensure adequate 5V USB power; the onboard regulator supplies 3.3V to the ESP8266.

🧪 Applications

• Smart home devices and automation
• Wireless sensor networks and data logging
• IoT prototypes and product development
• Remote‑controlled gadgets and connected modules
• Educational and maker projects with Arduino and electronics components

📦 Package Includes

• 1 × NodeMCU CH340G V3 board

🚀 Why Choose This Board?

Combine the convenience of the Arduino ecosystem with the networking power of the ESP8266. Whether you’re building a smart thermostat, deploying wireless sensors, or experimenting with microcontroller-based modules, the NodeMCU CH340G V3 delivers the features, performance, and reliability to bring your ideas to life.