This is D1 mini, it is a mini WIFI board based on ESP-8266EX.
11 digital input/output pins, all pins have interrupt/pwm/I2C/one-wire supported(except D0)
1 analog input(3.3V max input) a Micro USB connection
How to get started in Arduino:
Before you use miniD1 boards, you need setup CH340g driver.
On Windows you need install Python 2.7.10.
On Linux & MAC OSX, you don’t need install it, comes preinstalled with OS.
Installing Hardware package
There are two ways to install hardware package, Boards Manager or GIT
Installing with Boards Manager
Starting with 1.6.4, Arduino allows installation of third-party platform packages using
Boards Manager. We have packages available for Windows, Mac OS, and Linux (32 and 64 bit).
<1>. Install Arduino the latest version IDE from the Arduino website.
<2>. Start Arduino and open Preferences window.
<3>.Enter link: arduino.esp8266.com/stable/package_esp8266com_index.json (with http:// in front of arduin….) into Additional Boards Manager URLs field. You can add multiple URLs, separating them with commas.
<4>. Open Tools→Board:xxx→Boards Manager and install esp8266 by ESP8266
Community (and don’t forget to select your ESP8266 board from Tools > Board menu after installation).
Installing with GIT (Recommend):
We recommend using GIT to install Hardware package, you can always get the latest version of it.
1 x ESP8266 ESP-12 ESP12 WeMos D1 Mini WIFI Dev Kit Development Board NodeMCU Lua