When you connect the WeMOS D1 mini board for the first time on your Windows computer through a USB cable, it might be the case to install a USB-to-SERIAL driver.

The board has a USB-to-SERIAL converter (CH340 chip).

The driver is available for download here.

Install the driver

driver files

To make sure that is ok, check the “Device Manager” to see if your port is available and note the port number (in my case, COM6)


In Arduino IDE make sure to select the proper COM port

driver esp d1 mini arduino ide

If you can compile and upload an empty sketch, you’re ready for IoT!






ESP8266 – WeMOS D1 mini – ch340
Tagged on:                     

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.