In your course to this board you describe how to switch (?) from internal to external antenna (page 32, two pictures). I’ve got an ESP32-Cam board with external antenna. But this is also wired for the internal antenna. I tried to get the resistor from the board with a really tiny iron (Ersa minor). The resistor is lost, making a solder bridge as described is impossible. Furthermore a drop of solder came inside the antenna connector. Impossible to clean the connector. The board is useless now, garbarge.
When I order a new board, how can I use the external antenna? Any suggestions?
I’ve found this workaround. Take a look: https://marksbench.com/electronics/esp32-cam-antenna-workaround/
I hope this helps.