Keyestudio ESP8266 Web Sever Serial Wifi Expansion Shield Module ESP-13 for Arduino UNO

The Keyestudio ESP8266 Web Server Serial Wifi Expansion Shield (ESP-13) is a versatile networking module designed to easily connect your Arduino microcontrollers to the internet. It is ideal for students, educators, and makers looking to build Internet of Things (IoT) projects using familiar Arduino Uno or Mega2560 boards. With its dual-dial switch and built-in web server configuration, this shield offers flexible operation as either an independent development board or a standard expansion shield.

Industrial-grade WiFi connectivity

The shield features an industrial-grade ESP8266 chip protected by a metal shield for enhanced anti-interference performance. It is fully compatible with the pin layouts of main control boards like the Arduino Uno and Mega2560.

Dual-purpose serial control

Equipped with a dual-dial DIP switch, the shield allows you to easily route the serial port. This design lets you use the board either as a standalone ESP8266 development platform or as a standard Arduino MCU expansion shield.

Flexible voltage compatibility

An onboard voltage conversion chip ensures the shield is compatible with both 3.3V and 5V microcontrollers. This allows safe integration with a wide range of Arduino-compatible boards without risk of voltage mismatch.

Web-based configuration and firmware support

Users can configure WiFi and serial parameters directly through a built-in Web Server. The board supports downloading official AT command firmware, NodeMCU open-source firmware, and other custom builds for independent operation.

Robust wireless standards and protocols

Supporting 802.11 b/g/n wireless standards, the shield operates in both STA and AP modes with a built-in TCP/IP protocol stack. It breaks out numerous ESP8266 GPIOs and standard Arduino pins, supporting serial baud rates from 1200 bps up to 115200 bps.