based on the ESP-8266EX.Arduino Compatible, you can use it on Arduino IDE.NodeMcu Compatible11 Digital I/O pins1 Analog Input pinOTA -- Wireless Upload(Program)On board switching power supply -- Max 24V input, 5V 1A output More:http://www.wemos.ccShipping list:D1 R2 V2.1.0  ..
The Arduino Uno Wi-Fi is similar to the Arduino Uno Rev3 with an integrated Wi-Fi module! The board is based on the ATmega328P (datasheet) with an ESP8266 Wi-Fi Module integrated (datasheet). It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz ceram..