DIY - Sequential shifter with button box

hi i would like to post my sequential shifter, for my project i took inspiration from various project here on this forum and from the sequential by frex.

i think a sequential like this can be cheap to make if you have access to some tools like press drill, bench saw.
to connect the shifter to the pc i have used one of the cheap usb gamepad you can get on aliexpress(4-5$), once you get rid of the shell the board is very small, light and easy to hide.
https://www.aliexpress.com/item/USB...2739391270.html?spm=2114.40010308.4.62.qD86su


for the side ai have used 2x flat bar of aluminium 100x180x3mm, they are hold in place by a aluminium U channel 50x50mm cut to different sizes.
the shifter is then bolted with 50x50 aluminium angle bracket to the rig.

i have used a 2x M8 steel rod and 2x M8 End rod joint (found on aliexpress), 2x springs found on hardware store, a M12 Teflon rod with a thru 8mm hole, a few M8 nut and locknuts and spacers.
the switch in the pic is a heavy duty OnOffOn but i have now replaced it with a couple of end stop switch mounted vertically.

i have 3d printed the knob taking inspiration from a Sparco knob and the top cover which i then fitted with few momentarily buttons soldered to the usb controller.

To do:
i want implement a rotary encoder but because the USB controller does not support an encoder i would have to replace it with a better joystick controller, maybe one that support analog input as well for future handbrake project.