Hi Rui and Sara, Firstly thanks for the amazing job you have done on the books and tutorials I love it !! I would like to ask, where is the code defining that an access point is created on IP 192.168.4.1 and can this be changed somehow?
Thank you for your interest in our tutorials.
The 192.168.4.1 is the default IP address for the access point.
To set a different IP address, you can use the softAPConfig() method.
It is well explained here: https://stackoverflow.com/questions/58976055/how-to-change-ip-of-esp32-acting-as-an-access-point
I hope this helps.