ESP8266 Wemos D1 mini PRO board has an external antenna connector, besides the internal antena. The external antenna is not enabled. To do this, you must move the zero value resistor R16.

Notice the position were it should be the resistor for enabling external antenna connector:

Internal antenna enabled
External antenna enabled

Details before and after soldering




Follow the next article for a test program to read the wifi signal strength RSSI (Received Signal Strength Indicator).


ESP8266 D1 mini PRO extenal antenna
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Your email address will not be published.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.