https://cults3d.com/en/3d-model/game/sim-vernier-throttle

Cheap and simple 3D printed throttle quadrant

This unit has no joystick board, but can be connected to any DIY unit you already have.
Or simply connect it to TLN board, or an Arduino.

Phone mount, you can chose to glue it on or not.

You will need:

6x M3 inserts
8x M3x8mm screws
4x M3x10mm screws
7X M3x13mm screws
4x slide potentiometer

STLs are already oriented as they should be printed
no special settings

Slide potentiometers:
https://si.farnell.com/bourns/pta4543-2015dpb103/potentiometer-slide-10k-45mm/dp/1688415?CMP=e-email-sys-orderack-GLB