Part resquest: Joystick Part Needed

@microMerlin

So these are the wiring diagrams that I have created following this tutorial: https://www.youtube.com/watch?v=YMF5NXeHOnk&t=657s

Right now, I’m having a trouble with transmitter diagram. At 11:30 he said that he connected a voltage divider between VIN pin, GND and connected to an analog input, but I just don’t see that in the diagram of his, only the beginning path from the VIN pin, but to where it connects? It would be great if you can explain further about that.
Just in case, this is my files:
receiver_coursework.fzz (17.3 KB) transmitter_coursework.fzz (128.9 KB)

This is his project (2 parts), so you can easily find out if I messed up somewhere in my diagrams.

Thank you!