Screencast Keys for Blender 2.80+

How to Use:

* In the 3D View, hit Shift+Alt+C. Or press the Start Display button under Screencast Keys in N panel.

* The keys you press will appear by default in the lower-left corner of the 3D View

Options:

* Start Display: Activates/deactivates display of keys events.

* Size: Adjust the size for the text or mouse icon.

* Position: Move the horizontal and vertical margin relative to the 3D View.

* Text / Icon Color: Set the color for both the text and mouse icon.

* Fade Out Time: How much time it takes for the text to disappear.

* Display Mouse

** Icon: Show the mouse as an icon (default)

** Left / Right: Position the mouse icon.

** Text: Display mouse events as text.

** No Mouse: Don't display mouse events.

* Display Box

** Box Color: Set the color and alpha for the background box.

** Hide: Only show the box when a key was pressed, otherwise hide it.

** Box Width: Set the minimum size for the box (it resizes automatically if text doesn't fit)

* Display Last Operator

** The last used operator (tool) is shown below the box in the 3D View.

Support Forum:

https://blenderartists.org/t/screencast-keys-for-blender-2-80