What debugging/monitoring method do you use?

⏩  Saleae Logic Analizer, like any other logic analyzer, is a type of electronic test instrument that is commonly used to capture and display digital signals for the purpose of debugging and analyzing electronic circuits.

It can be a useful tool for troubleshooting and understanding the behavior of digital systems.

❓ Which debugging system do you use? And what tips do you have for monitoring signals on embedded systems in general?