Nexus 6P Case and slide out Gamepad

thingiverse

So this is still strictly a work in progress and my first ever design. You may remember the xperia play phone. This was an android device from 2011 that had a slide out gamepad to allow for true console quality gaming on the go with real controls. Unfortunately Sony never updated this pone and other Phone companies have released gaming phones without true controls (Razer, Black shark etc). The concept here is to have a sliding out gamepad that sits behind a nexus 6p that will still allow for the camera to operate when not in use (finger print scanner gets in the way). The gamepad must support all modern standards (dual shoulder buttons, dual analogue sticks with select). I previously went down the route of building my own gamepad from scratch, but unfortunately the only analogue sticks I could find with a built in select button were way taller that a pre build gamepad that i have found. In this end this is a case to fit a nexus 6p and the 8bit duo N30 pro gamepad. The is the slimmest gamepad I can find. If anyone knows of anything knows of anything more slimline I wold love to know. This is still being designed as I dont have a 3d printer to prototype so amy making guesses until I pay to have this produced. The main issue I am still facing is the sliding mechanism. The simplest idea I have so far is a screw that goes through the phone case slots and into the gamepad case. So they should slide together and hold using just friction. Ugly but simple may work? I dont know what this slider mechanism is called normally (for phones that would slide out and lock) but cant find any designs on the web that allow for something to be 3d printed.