How to record runtime/output with a graph?

This is a great one to start with:

https://budgetlightforum.com/t/-/45138

Zak's ceilingbounce app. Focused on runtime graphs. Maybe you could use it for output as well, but never done that, so I don't know how accurate that would be.

Here is a list of Luxmeters that do the logging for you as well.

https://budgetlightforum.com/t/-/56270