This is D1 mini, it is a mini WIFI board based on ESP-8266EX. 11 digital input/output pins, all pins have broken/pwm/I2C/single wire supported (except D0) 1 analog input (input max 3.3V) Micro USB connection how to start: configuration driver before using miniD1 boards, you need the CH340g configuration driver. Python on Windows you need to install Python 2.7.10. On Linux and MAC OSX, you don't need to install it, it comes pre-installed with the operating system. Installing a hardware package there are two ways to install a hardware package, a board manager or a GIT installation with a board manager starting with 1.6.4, for Arduino it allows you to install third-party platform packages using a board manager. We have packages available for Windows, Mac OS and Linux (32 and 64-bit). lt; 1gt;. Install for Arduino 1.6.7 from the Arduino website. lt; 2gt;. Start with Arduino and open the preferences window. lt; 3gt; In the Additional Manager URLs field