I have a problem, I installed everything on my raspberry and everything works fine with the home wifi network, now I have to take my raspberry with opensprinkler to the garden where I have a second wifi network, but how do I change network, in settings there is no possibility.
The OpenSprinkler firmware itself does not manage WiFi connection – WiFi is managed by Raspbian (or whichever operating system you installed on your Raspberry Pi). Just google how to change WiFi on Raspberry Pi, there are plenty of instructions online.