WeMos D1 (R2) ESP8266 Development Board (HCWEMO0001)

Wemos ESP8266 based development boards and shields
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WeMos D1 (R2) ESP8266 Development Board (HCWEMO0001)

Post by admin » Mon Nov 21, 2016 12:22 pm


The WeMos D1 R2 Uno based ESP8266 is a wireless 802.11 (Wifi) microcontroller development board compatible with the Arduino IDE. It turns the very popular ESP8266 wireless (WiFi) module into a fully fledged development board. The layout of this board is based on a standard Arduino hardware design with similar proportions to the Arduino Uno and Leonardo. It also includes a set of standard Arduino headers which means many existing Arduino shields can be plugged directly into the board (see note below).

The development board also includes a CH340 USB to serial interface giving it the ability to be connected and programmed directly from your computer and requiring only a common micro USB cable – no additional interface hardware or configuration is required. Once connected to the computer, and drivers have been installed, the WeMos D1 will appear as a standard serial COM port. The WeMos D1 can be programmed directly from the Arduino Integrated Development Environment (IDE) which is freely available for download from the Arduino website (arduino.cc).

Direct Arduino IDE support for this development board can be added with just a few mouse clicks via the built-in board manager feature. Programming the WeMos D1 via the IDE is then as straight-forward as programming any standard Arduino development board. Many of the default Arduino commands will work, including digital and analogue pin functions, and many examples are included in the IDE which demonstrate how to take advantage of the ESP8266s WiFi capabilities. These examples range from simply blinking an LED to turning the WeMos D1 into a stand-alone web server.

To quickly get going we have provided an Arduino setup guide on our blog site here:


Please note: This board requires a USB driver to be installed. Currently supported operating systems include all 32 & 64 bit versions of Windows 7,8, & 10. Drivers can be found at the bottom of this post.

This a 3.3V development board and is not compatible with 5V hardware. Please check compatibility before purchasing Arduino shields.


Technical Specification
Microcontroller: ESP-8266EX
Operating Voltage: 3.3V
Digital I/O Pins: 11
Analogue Input Pins: 1 (Max Input is 3.2V)
Clock Speed: 80MH/160MHz
Flash: 4MB


Example Arduino Blink Sketch:

Code: Select all

/* HCDVBD0027 Blink example - HobbyComponents.com */

#include <ESP8266WiFi.h>

#define PIN 2               // Flash the LED connected to GPIO2

void setup() 
  pinMode(PIN, OUTPUT);     // Set the pin to an output

void loop() 
  digitalWrite(PIN, LOW);   // Turn the LED on  
  delay(1000);              // Wait for a second
  digitalWrite(PIN, HIGH);  // Turn the LED off
  delay(1000);              // Wait for another second


USB 32/64 bit drivers for Microsoft Windows computers can be downloaded from our Github page here:


or from our website Windows drivers can be downloaded here


USB 32/64 bit drivers for Microsoft windows computer can be downloaded from our Github page here:

Windows Installation Instructions

Drivers are available in the link below. Simply download and unzip them, plug in your WeMos D1 and when the new hardware is detected, point the wizard to the folder you just unzipped to and it should install without any problems.

Windows Driver here

MAC installation instructions

New code signed version confirmed to work with 10.12 Sierra

Older code signed version confirmed to work with El Capitan


Download the driver (you must be logged in to download)

Once downloaded, double-click the zip file to unzip it.

Run installer found in that folder.

If asked to restart, do not restart just yet.

Now restart your Mac.

Disclaimer: Libraries, example code, and diagrams are provided as an additional free service by Hobby Components and are not sold as part of this product. We do no provide any guarantees or warranties as to their accuracy or fitness for purpose.

Descriptions and diagrams on this page are copyright Hobby Components Ltd and may not be reproduced without permission.
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Posts: 3
Joined: Thu Mar 05, 2015 9:04 am

Re: WeMos D1 (R2) ESP8266 Development Board (HCWEMO0001)

Post by andyedtec » Wed Jan 04, 2017 4:18 pm

Just followed your Get Blinky Tutorial for the WEMOS D1.
I'm running win7 64 win the latest Arduino Ide.

I just wanted to let you know the blink sketch worked fine no problems

So I now have my Wemos esp Development environment up and running thanks to your tutorial. :D



Site Admin
Posts: 1160
Joined: Sun Aug 05, 2012 4:15 pm

Re: WeMos D1 (R2) ESP8266 Development Board (HCWEMO0001)

Post by andrew » Thu Jan 05, 2017 9:58 am

Thanks for the feedback :D
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