NodeMCU board ESP8266 WiFi module CP2102 ESP-12E Lua WiFi

The NodeMCU is a popular open-source development board featuring the ESP8266 WiFi module (ESP-12E) and a CP2102 USB-to-Serial converter for easy programming and debugging. It's an affordable and versatile platform for building IoT projects with built-in WiFi connectivity.

This board comes pre-loaded with Lua firmware but can be reflashed with Arduino-compatible firmware for use with the Arduino IDE. All GPIO pins are broken out with convenient headers for easy prototyping.

Key Features

• ESP-12E WiFi Module – Built-in 802.11 b/g/n WiFi connectivity
• CP2102 USB-to-Serial – Direct USB programming, no external programmer needed
• All GPIO Accessible – Full access to ESP8266 IO pins via breadboard-friendly headers
• No Reset Required – Auto-program circuit for seamless firmware uploads
• Open-Source – Extensive community support and resources
• Low Power – Standby current under 200µA

Specifications

• Module: ESP-12E (ESP8266)
• USB Chip: CP2102
• Power Input: 4.5V–9V (10V max) via USB or VIN
• Operating Current: ~70mA (200mA max during transmission)
• Standby Current: <200µA
• Operating Temperature: -40°C to +125°C
• Dimensions: 48 × 25 mm

Ideal For

• IoT projects and connected devices
• Home automation systems
• WiFi-enabled sensors and data loggers
• Learning embedded development and Lua/Arduino programming

Package Contents

• 1× NodeMCU ESP8266 CP2102 Development Board

Resources

• CP2102 USB Drivers (Silicon Labs)
• ESP8266 Arduino Core (GitHub)