This is the code to control a 4 way relay, via a web interface, which will then control a 1x4 antenna switch.
You may find the corresponding video tutorial ony my Tech Minds YouTube channel, here: https://www.youtube.com/embed/UB6Tlh_ZC4s
The ESP32 module used was a ESP32 WROOM 32, but I expect most WiFi enabled ES32 modules should work.
AT-14 4-Way Coax Remote Antenna Switch
https://s.click.aliexpress.com/e/_opjwMKF
I used the following ESP32 Wroom module, but I guess you could use any: https://s.click.aliexpress.com/e/_oB9Pmex
Relay Board: https://s.click.aliexpress.com/e/_omtcOEx
I used the latest Aruino IDE application. Ensure you have the libraries used installed and the board type installed. Simply select the board type and compile/upload to ESP32.
This may vary depending on which ESP32 you use. Some prior knowledge of compiling for ESP32 is recommended.
Before uploading the ESP32 code, make sure to edit the follow lines:
Line 11. const int relayPins[4] = {5, 18, 19, 0}; //confgiure ESP32 GPIO pins (Ant1, Ant2, Ant3, Ant4)
Line 7. const char* ssid = "ENTER SSID HERE"; //Local wifi name
Line 8. const char* password = "ENTER PASSWORD HERE"; //Local wifi password
