Raspberry pi GPIO pin usage

Is there a way to read the GPIO pins to do things like dim screen when parking lights turn on? Also is there a way cause I don’t want to always have to pull out a mouse or touch screen to swap between different screens/modes like a up/down/left/right/enter panel.

Yes, Linux version of RealDash is capable of reading and writing Raspberry Pi GPIO pins. Inputs are defined in GPIO category of the inputs.

Some controls are possible with actions that can be triggered by inputs. Like switch pages etc.