The NodeMCU V2 is a Wi-Fi development board based on the ESP8266 (ESP-12E module) with an on-board PCB antenna and USB programming interface. It supports 802.11 b/g/n wireless networking and can operate in STA, AP, or STA+AP modes with a built-in TCP/IP stack supporting up to 5 simultaneous TCP client connections.

Program in Lua, Arduino IDE, MicroPython, or other ESP8266-compatible environments. The board supports over-the-air (OTA) firmware updates and features multiple GPIO pins with PWM and I2C capability.

Key Features

• ESP8266 Wi-Fi – 802.11 b/g/n, STA/AP/STA+AP modes
• USB Programming – Built-in USB-to-serial interface for easy flashing and debugging
• GPIO Pins – D0–D8, SD1–SD3 with PWM and I2C support (15 mA drive)
• 1-Channel ADC – Analogue input on A0
• OTA Updates – Remote firmware upgrades over Wi-Fi
• Built-In TCP/IP Stack – Up to 5 simultaneous TCP connections

Specifications

• Module – ESP-12E (ESP8266)
• Wi-Fi – 802.11 b/g/n
• Power Input – 4.5–9 V or USB powered
• Operating Current – ~70 mA typical, 200 mA max (transmitting)
• Standby Current – <200 µA
• Baud Rate – 110–460800 bps
• Operating Temperature – −40°C to +125°C
• Weight – ~7 g

Package Contents

• 1× NodeMCU V2 ESP8266 development board

Resources

• Schematic