How To Connect A Stepper Motor to Turn a Solar Panel Answered

I want to use a stepper motor to turn a pipe or 2x2 piece of wood connected to a solar panel. I want this to be a direct drive system. No gears, no belts. I can't find an example showing how I can connect a stepper motor stem/bolt to a mount that it turns, though. I can see them connected in projects, they mysteriously leave out the details on the parts used and the details connecting it or they use gears/belts.