WeMos D1 ESP82660 Wifi Board


Please note that this board 3.3V, and can NOT be used with 5V logic modules without a voltage level converter! 


WEMOS D1 is a WIFI development board based on ESP8266. The functioning is similar to that of NODEMCU , except that the hardware is built resembling Arduino UNO. It has a larger flash memory compared to an Arduino Uno. It consists of 11 digital I/O pins and 1 analogue (input) pin. 

Microcontroller ESP-8266EX
Operating Voltage 3.3V
Digital I/O Pins 11
Analog Input Pins 1
Clock Speed 80MHz/160MHz
Flash 4M bytes



Important! all the I/O pins runs at 3.3V only. Do not plug anything over 3.3V on all I/O pins. It will damage the boards in a second.


Windows Drive Manager

Use a MicroUSB cable to connect D1 with Windows PC. Make sure that the cable is capable of handling both Data & power (some of the mobile cables can handle  only power & not data) .Open the DEVICE MANAGER & note the COM PORT allotted to the module.As the serial chip used on D1 is CH340 , you need to install the corresponding drivers.

Arduino IDE

  1. Installing the latest Arduino IDE from  Arduino website.
  2. Go to File > Preferences on Arduino IDE, enter https://arduino.esp8266.com/stable/package_esp8266com_index.json into the Additional Board Manager URLs field.

  3. Open Boards Manager from Tools > Board > Boards Manager menu , search and install esp8266 platform.

  4. From Tools > BoardSelect the board as WEMOS D1 R1, and choose the correct Com port.
  5. Now, Let's light up the build in LED. open the File > Examples > 01. Basics > Blink sketch  and click UPLOAD button. The build in LED nears the Wifi chips should blink accordingly. 







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