D1 Mini WEMOS V3 ESP8266

D1 Mini WeMoS ESP8266 V3The D1 Mini WEMOS 8266 V3 is minimal ESP8266 WIFI board. The D1 mini is a mini WIFI board based on ESP-8266EX. Board size: 34.2mm*25.6mm More info here: http://www.wemos.cc Feature: – 11 digital input/output pins, all pins have interrupt PWM   I2C  one-wire supported(except D0) – 1 analog input(3.2V max input) – a Micro USB connection – Compatible with Arduino https://github.com/esp8266/Arduino – Compatible with Nodemcu  What is  Use BRT (Bias Resistor Transistor), easier into flash mode. 2. 30% increase in radiating area, more stable. Package included:/en.wikipedia.org1 x WeMos D1 mini 2 x Long female pin 2 x Short female pin 2 x Normal pin.http://www.nodemcu.comD1 Mini WeMoS ESP8266 V3The chip was popularized in the English-speaking maker community in August 2014 via the ESP-01 module, made by a third-party manufacturer Ai-Thinker. This small module allows microcontrollers to connect to a Wi-Fi network and make simple TCP/IP connections using Hayes-style commands. However, at first, there was almost no English-language documentation on the chip and the commands it accepted. The very low price and the fact that there were very few external components on the module, which suggested that it could eventually be very inexpensive in volume, attracted many hackers to explore the module, the chip, and the software on it, as well as to translate the Chinese documentation