#Deal: WeMos d1 mini Pro 16MB ESP8266 WiFi IoT development board compatible Arduino IDE

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Last updated on 30 May 2020 3 h 07 min

The WeMos d1 mini Pro is an improved version of the WeMos d1 mini developed by the Chinese company Wemos.cc. It is built around the Espressive SoC ESP-8266EX. Compared to her little sister, she brings three improvements. First, it is equipped with 16MB of flash memory instead of 4MB. The WiFi antenna engraved on the PCB has been replaced by a ceramic antenna of better quality. Finally, an IPEX connector can be used to add an external WiFi antenna. It is possible, for example, to increase reception when the network coverage is poor. An extension for an external antenna can also be used. Convenient if the Wemos Pro is installed in a metal cabinet that cages faraday or blocks the WiFi signal.

External WiFi antenna with IPEX connector wemos d1 mini pro

External WiFi antenna with IPEX connector

Like all development cards based on ESP8266, it is very easy to program it using the IDE Arduino or PlatformIO. It is supported natively by the Espressif SDK. All Shields developed for the WeMos d1 mini are compatible. We regret, however, the lack of support for extended memory (16MB) by the Espressif SDK at the moment.

Technical characteristics

  • SoC: Espressive ESP-8266EX
  • WiFi 802.11 b/g/n, ceramic antenna + IPEX connector for external antenna
  • Operating Voltage: 3.3V
  • I/O Pins: 11
  • Analog input: x1, max. Permissible voltage 3.2V
  • UART: x1
  • CPU Frequency: 80 MHz / 160 MHz
  • Flash Memory: 16MB (128MBit)
  • Micro USB port for programming and focusing
  • Serial to USB converter CP2104. Drivers are available on this page for Windows (XP, 7, 8, 10, CE, 2000), Linux, Android and MacOS
  • Power supply 5V
  • Micro USB port
  • A reset button that resets the SoC and the 3.3V and GND pins
  • Dimensions: 34.2 x 25.6mm


The pins remain identical to the previous generation.

Pin on boardFunctionESP-8266
A0Analog input, max 3.3V inputA0
D3IO, 10k Pull-upGPIO0
D8IO, 10k Pull-down, SSGPIO15

WeMos d1 mini Deals

Expansion boards (Shields) for WeMos d1 mini Pro

All shields developed for the WeMos d1 mini are compatible with the Pro

The shields are stacked on top of the WeMos d1 mini. To facilitate the development and mounting, there is also a double base

wemos d1 mini dual base

and a triple base

History of the best deals on Amazon

WEMOS D1 Mini Pro 16M Bytes External Antenna Connector ESP8266 WIFI IoT Board, diymore

Price: $8.88
as of 28 May 2020 3 h 02 min  
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Price History


Current Price $8.8828 May 2020
Highest Price$8.8811 April 2020
Lowest Price$8.8811 April 2020
Since 11 April 2020

Last price changes

$8.8811 April 2020

DIY tutorials and projects based on Wemos d1 mini or Pro

All tutorials and projects developed for the WeMos d1 mini can be used on the Pro version. You can start by reading this tutorial if you start programming ESP8266 modules with Arduino code. If you have never programmed, you can install the ESP Easy firmware and make your temperature probes, make displays, order your roller shutters … without programming. Follow this comprehensive guide to install ESP Easy on the WeMos d1 mini and trade your first projects.

To continue, here are all DIY tutorials and projects developed using the WeMos d1 mini:

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Specification: #Deal: WeMos d1 mini Pro 16MB ESP8266 WiFi IoT development board compatible Arduino IDE




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