On modules like for the ESP8266 and ESP32 platforms the PCB ... Ultimately, the best PCB antenna design is one where there is no nearby copper fill, and there are no traces running near or on ...
At this point, we’ve all seen enough ESP8266 “weather stations” to know ... For extra hacker points, the board was even produced at home on a PCB mill. In addition to the ESP-7 or 12 module ...