Tag Archives: WEMOS D! MINI



Wemos D1 mini

The Wemos D1 mini is a small WiFi based development board. The board is based off of the ESP-8266EX MCU developed by Espressif . The dimensions are 34.2*25.6 mm which allows this small package to be used effortlessly in large scale applications. Shields are also widely available and add to the ease of use for this board.


  • 11 digital IO, interrupt/pwm/I2C/one-wire supported(except D0)
  • 1 analog input(3.2V max input)
  • a Micro USB connection
  • Compatible with MicroPython, Arduino, nodemcu

Technical specs

  • Operating Voltage 3.3V
  • Digital I/O Pins 11
  • Analog Input Pins 1(3.2V Max)
  • Clock Speed 80/160MHz
  • Flash 4M Bytes
  • Size 34.2*25.6mm
  • Weight 3g

My specific board comes from a company called Farylink. It looks like they make small boards with wifi capabilitys.

According to there website:

Shenzhen Huayulian technology co., LTD is an IOT company that integrates rd, production and sales and is technology-oriented and service-oriented. With a rich background in the IOT industry, it focuses on the research, development and production of IOT communications.

Size fingers for scale.
Looks like someone rubbed of the programming IC’s serial markings. Or perhaps it was manufactured without any markings? Either way the fact remains its 100% a Chinese copy.

The link to the CH340 driver (which is required to program the Wemos D1 mini over USB) can be found here.