Detail ROBOTDYN SHIELD BUTTON FOR WIFI D1 MINI LIKE WEMOS D1 MINI SHIELD BUTTON
Button is a commonly used shield with a great variety of applications. By default, the button is connected to D3 I/O port on the WiFi D1 mini. If you wish to use another I/O port, just cut off of the connection to D3 and solder it to another pad, as needed.