This is for Arduino Form factor compatible (Not all pins are pin for pin compatible out due to limitations of the ESP8266)But You can program this via the regular for Arduino IDE.. Very interest device for anyone interesting inprototyping with for Arduino form factor shields.Full information can be found here. Have a read before you buy to make sure this device is suitable for you.If you are a Maker， an experimenter， a prototyper， I'd highly recommend one.Before USE D1You need setup ch340g(USB to UART IC) driver， if you first use it. WindowsDownload driver from: win32/64IOSDownload driver form: IOSPython 2.7pySerial pip install pyserialLinux(Ubuntu)Not need setup any driver.Python 2.7pySerial pip install pyserialInstall hardware packageInstalling with Boards ManagerStarting with 1.6.4， for 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).Install for Arduino 1.6.5 from the for Arduino website.Start for Arduino and open Preferences window. Package include:1 PCS OTA WeMos D1 CH340 WiFi Development BoardSpecificationsDimensions: 6.5 cm x 5.5 cm