Product Specification Main Chip: ESP8266 CH340G. WIFI Development Board, 4M bytes. supported (except D0). Support OTA on line. 1 Micro USB connection. 1 analog input (3.3V max input). 5V 1A switching power supply onboard. 11 digital input/output pins, all pins have interrupt/pwm/I2C/one-wire and a micro-USB connection.How to get it started in compatible for Arduino: - Setup driver Before you use mini D1 boards, you need set up CH340g driver. - Python 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 "Boards Manager or GIT". We recommend using GIT, you can always get the latest version. Package Includes: 5 x D1 Mini NodeMcu Lua WLAN WIFI Internet Development Board See more

Our D1 mini development board compatible with Arduino WeMos and can be programmed in the compatible for Arduino IDE. WIFI development board,4M bytes.5V 1A switching power supply (switching power supply)onboard. 11 digital input / output pins, all pins with interrupt / PWM / I2C / support 1 line (except D0); 1 analog input(3.2V max input). Micro USB connection; Compatible with Arduino; 1MB Flash; 500mA resettable fuse. This is D1 mini, it is a mini NodeMcu Lua WiFi board based on ESP-8266EX.