Is there a version of the STM32 board which offers the option for an external antenna ?
I am looking at the EVB or WROVER but it is not clear if they have this option or not...
https://www.olimex.com/Products/IoT/ESP32-EVB/open-source-hardware
https://www.olimex.com/Products/IoT/ESP32-WROVER-KIT/
https://www.olimex.com/Products/IoT/ESP32-GATEWAY/open-source-hardware
https://www.olimex.com/Products/IoT/ESP32-CoreBoard/
If this is not available ? Is there any reason why ?
Can it be modified to add support for external antenna ?
Otherwise, do you know any ESP32 board with an external antenna ?
Thanks
>>> Is there a version of the STM32 board which offers the option for an external antenna ?
Boards that use ESP32-WROVER module. Like the ESP32-WROVER-KIT board. Some boards that don't use both modules but only the ESP32 chip also have the option for antenna.
This availability mainly depends on the ESP32 module used in a board (and whether the board doesn't use ESP32 module but only the ESP32 chip). There are two modules frequently used ESP-WROOM-32 and ESP32-WROVER. The ESP-WROOM-32 module has no provision for external antenna and ESP32-WROVER has provision for external antenna (the pads for the connector are on the edge of the chip itself). The ESP32-WROVER-KIT has pads for U.FL connector, but no connector placed (you can place it yourself tho).
>>> If this is not available ? Is there any reason why ?
One chip has it, one doesn't.
>>> Can it be modified to add support for external antenna ?
ESP32-WROVER-KIT can easily be modified. The rest of the boards that come with ESP-WROOM-32 without provision for antenna.
>>> Otherwise, do you know any ESP32 board with an external antenna ?
Go to http://esp32.net/ and search for "U.FL".