I can lend a hand, after spending a painful 10s on the website (which really needs some thought put into it if this is a serious project).

If you have any moderate experience with hardware hacking, you would be aware of a handy little hardware device called the Bus Pirate, which has been around in various forms for many years. It is designed to be like a Swiss army knife for connecting to devices and inspecting and debugging them. For example, it can decode/encode various common (and uncommon) digital protocols that are used by chips and hardware devices to communicate with each other.

This project... it appears that someone has (with a significant amount of AI-assistance, if the website is anything to go by) produced firmware for ESP32 devices which aims to replicate the functionality of a Bus Pirate. This is notable because ESP32 boards are much cheaper and widely available.

Without looking much into it though, my instinct tells me that it would be significantly more limited than the purpose-built Bus Pirate hardware.