Hello, I have a LGB train and I would like to wireless control railroad from iPhone if possible. I am beginner. Could you please put some interesting website or tell me what components I need? Thanks
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If you want to use a phone for a controller the simplest thing might be to use an ESP8266 or an ESP32 as they contain WiFi as standard.
I made a very simple controller with an ESP32-CAM which gives me a view on my phone from the driver's cab. I used a Pololu DRV8833 motor driver and powered it with a pack of 4 x AA alkaline cells. The DRV8833 is a low voltage controller.
The software on the ESP32-CAM works as a web server and any phone with a Browser can act as a client and controller.
...R
That is a big project for a beginner. First get the Arduino cookbook and read it from cover to cover. Then build the controls and operate them manually first. When they are working you should then get the phone to control things. Then connect them together and finish debugging the system. This response is to help you get started in solving your problem, not solve it for you.
Good Luck & Have Fun!
Gil
Some wifi projects at the below site.
Note that you need to use an ESP8266 board or an ESP32 - not a classic Arduino. 