How to do custom rotation sliders and transformation buttons with python?

[rbumm (Rudolf Bumm)]

This topic may serve as a good starting point:

Rotation around specific point

Pay attention to which transform you apply to the model and which one you are adjusting with sliders (they are not same). Also check for any error messages in the console. If you need more specific help, share a screen capture video of what you do, or save the scene as a bundle (mrb) file and share that.

There is an interesting script and video at the end.