Add ‘Tab’ feature via rotary encoder

[h3b]

I have searched this forum and don’t believe this feature exists today.

My project is limited by the size of screen I can use so touchscreen isn’t a perfect solution. 

With a rotary encoder we can scroll through features and buttons and push/click to enter. 

Yes, I can retro fit an iDrive controller but this essentially provides the same service, but is a big piece of hardware to install somewhere in a small car

Is this difficult to do?

Hi, i just read this thread and maybe i found the solution for you. I've used an Alps RKJXT1F42001 Encoder for my XC90 project.
And it has very similar features like the iDrive controller just way smaller.

left, right, up, down, scroll right, scroll left and press to enter.
I can also send you a codesnippet what i used to translate the movements from the encoder to keypresses (very similar to idrive controller) on a keyboard.