The WeMos-compatible D1 Mini is an ESP8266EX-based microcontroller featuring 11 digital input/output pins, a single analog input pin. It offers the convenience of a micro-USB connection for both power and data (running at 3.3V), and despite its size has built-in WiFi and 4MB of flash memory. It can be programmed with the IDE or LUA, and supports both serial and OTA programming. Features and Specifications: * Microcontroller: ESP-8266EX * Operating Voltage: 3.3V Max (5V power from MicroUSB connector is internally converted to 3.3V) * Digital I/O Pins: 11, all pins have interrupt/PWMI2C/one-wire support except D0 * Analog Input: 1 (3.2V max input) * Connector: MicroUSB * Clock Speed: 80MHz/160MHz * Flash: 4M bytes * Dimensions: 34mm x 25,5mm x 6.8mm * Weight: Approx. 5g excluding connectors This D1 Mini comes with 3 different types of header connectors to support various configurations: * Female * Male * Female/Male (long female) In most cases, the female headers are the best choice as they allow you to install the various shields that are available. Package Includes: * 1x D1 Mini ESP8266 ESP-12 WiFi Development Board NodeMCU Lua * Two each Female, Male, and Female/Male (long female) connectors * Printed installation and operation instructions

Comes with 3 different types of header connectors to support various configurations: Female, Male, Female/Male (long female). Built-in WiFi and 4MB of flash memory. It can be programmed with the IDE or LUA, and supports both serial and OTA programming. This WLAN board contains 11 digital input / output pins, all pins have interrupt / pwm / I2C / 1-wire support except D0. This D1 mini module is a mini WIFI board based on the ESP-8266EX.