.hex file on arduino

so, a month ago, i started an project with arduino leonardo that consists of making a gaming steering wheel, and now all of the components have arrived. It is a project started by other person on youtube, and he sent, as a code, an .hex file. the point is, i already know how to upload it to my arduino but i would like to make changes to the code, as the original has fewer options. Here's an diagram of it:


i just want to know how to edit an .hex file if it is even possible.

Not possible.
Intel HEX - Wikipedia

Editing can be done with an hex editor but it won’t do you any good unless you are fluent in hex binary coding… it’s a task for a compiler and linker. Ask. For the source code or better develop yours!

(post deleted by author)

flagged as duplicate thread
https://forum.arduino.cc/t/hex-file-on-arduino/1072468

Duplicates merged.

Hello, do yourself a favour and please read How to get the best out of this forum

Duplicated posts are not allowed

But can i convert it into actual written code?

in assembly yes, in original C++ no

can't you get the code from the author?

This project is from some person on youtube, i asked them via comments but i don't know if they're gonna give Me the code. I may try to take a look at the joystick library API and try to make a code but i don't really know coding. Thanks for helping anyways!

what's the youTube link?

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