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 The WiFi antenna engraved on the PCB has been replaced by a ceramic antenna of better quality.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
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
- Shield DCIN 7-24VDC
- Shield LiPo battery to power the card and recharge the battery simultaneously
- Power Max. 5V via the USB port or Pin 5V on the card
- A reset button that resets the SoC and the 3.3V and GND pins
- Dimensions: 34.2 x 25.6mm
Pinout
The pins remain identical to the previous generation.
| Pin on board | Function | ESP-8266 |
| TX | TXD | TXD |
| RX | RXD | RXD |
| A0 | Analog input, max 3.3V input | A0 |
| D0 | IO | GPIO16 |
| D1 | IO, SCL | GPIO5 |
| D2 | IO, SDA | GPIO4 |
| D3 | IO, 10k Pull-up | GPIO0 |
| D4 | IO, 10k Pull-up, BUILTIN_LED | GPIO2 |
| D5 | IO, SCK | GPIO14 |
| D6 | IO, MISO | GPIO12 |
| D7 | IO, MOSI | GPIO13 |
| D8 | IO, 10k Pull-down, SS | GPIO15 |
| G | GND | GND |
| 5V | 5V | – |
| 3V3 | 3.3V | 3.3V |
| RST | Reset | RST |
WeMos d1 mini Deals
Ebay.com
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Banggood.comExpansion boards (Shields) for WeMos d1 mini Pro
All shields developed for the WeMos d1 mini are compatible with the Pro
- Buzzer
- 1-Button
- Relay with 250VAC/10A or 30VDC/10A output
- Temperature and humidity on I2C bus:
- OLED Display SSD1306 I2C 64×48 pixels
- Micro SD card reader
- Drivers 2 motors (15VDC max) I2C
- LEDs
- RBG Led light point controlled by the WS2812B microcontroller compatible with the Neopixel Adafruit library
- Led matrix 64 light points (8×8)
- Power supply shields
- Prototyping
Aliexpress
Aliexpress
Aliexpress
Aliexpress
The shields are stacked on top of the WeMos d1 mini. To facilitate the development and mounting, there is also a double 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
as of 3 August 2020 3 h 02 min
Amazon.com
Price History
Statistics
| Current Price | $8.88 | 3 August 2020 |
| Highest Price | $8.88 | 11 April 2020 |
| Lowest Price | $8.88 | 11 April 2020 |
Last price changes
| $8.88 | 11 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:
- BH1750 (GY-302), measure the lighting quality of your home (Arduino / ESP8266 / ESP32)
- First project Homie ESP8266: publish in MQTT measurements of a DHT22 probe
- Recycle a remote-controlled car (RC car) with an ESP8266, Shield Motor Wemos d1 mini and Blynk
- #Test: Shield Motor I2C Wemos D1 Mini (or Pro) to drive 2 motors 15Vdc
- Node-RED + MQTT + ESP8266: how to drive an articulated PTZ system in WiFi
- Cayenne IoT + ESP8266: driving a mini kit Pan-Tilt FPV SG90 in WiFi with a smartphone or tablet
- Blynk + ESP8266: drive a Pan-Tilt PTZ SG90 in WiFi with a smartphone or tablet
- Unpacking: shield SHT30 (temperature and humidity) for Wemos D1 Mini
- Portable WiFi Scanner with OLED Display (ESP8266): signal strength, connection test to a server
- Driving the ESP8266 GPIO (Web Server) from Jeedom to TCP / IP Wireless – Part 2
- #Test Shield Battery LiPo for Wemos D1 Mini (voltage measurement and level of charge)
- ESP8266 (Web Client): Sending Data to Jeedom in TCP / IP Wireless (JSON API) – Part 1
- #Test: shield OLED for Wemos D1 Mini (SSD1306 64×48 pixels) review with ESP Easy and Adafruit_SSD1306
- Driving the GPIO of the ESP8266 (Web Server) from Domoticz to TCP/IP Wireless – Part 2
- ESP Easy: firmware ESP8266 to create connected and home automation objects without programming
- ESP8266 (Web Client): Sending Data to Domoticz in TCP/IP Wireless (API/JSON) – Part 1
- ESP8266 (Web Client – Part1): TCP/IP communication (examples ESP8266WiFi and ESP866HTTPClient)
- Blynk: How to install a private local server on Raspberry Pi 3 (unlimited energy, test Wemos DHT22)
- ESP Easy: flash the firmware with esptool.py on ESP8266 (GitHub)
- ESP Easy + MQTT + Node-RED: bi-directional communication, dashboard
- Shield Wemos D1 Mini DHT11 or DHT22: Arduino code – ESP Easy
- Wemos D1 mini: ESP8266 multi-purpose IoT development board less than $5
- Jeedom, create an OLED SSD1306 remote display with ESP Easy and HTTP request
- New Wemos D1 mini Pro 16MB, Wemos XI and Shield SHT30
- ESP Easy: How to add OLED SSD1306 display to an IoT ESP8266 project
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