How to implement flap rotation?

Question

Do it yourself

There is a fireplace, it has a damper in the chimney, it rotates 90 degrees, now it is controlled manually (turned with a wrench), but if you want - by the button.
I found an "air damper actuator", but it costs 10,000 rubles - it seems to me expensive for this task, and it looks complicated.
What is the easiest way to implement the idea?
PS: I know what servos are (from automodeling), but I don't know how to program them.

Answer 1

Look at aliexpress, is this not what you need? - https://ru.aliexpress.com/item/With-five-levels-dr...
It costs only 2 722r.