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