How do they do this ECU simulation?

[ryzen 0]

Hi guys,
I am interested in ECU hardware diagnosis and repair. While doing research, I saw several simulation examples.
1 - Simulation with Arduino (or microprocessor)

https://ibb.co/5MSr26L

2 - Mechanical simulation

https://ibb.co/jVQfvZ1

Can anyone who knows about this issue help me? How do they set up the wiring diagrams? How do they check crank cam sensors with potentiometer and test injectors and ignitions with led?
I don't want to connect any sensor to the ECU and test it. I just want to simulate it on the workbench. Those who want to help for a fee can send me a private message.

I wish everyone a good forum.

[ArtNec 0]

You should get ALLDATA or Mitchel-on-Demand , that would help you a lot more with diagrams etc.