This post illustrates how you can control a unipolar stepper motor from .NET MicroFramework using very simple hardware.
The motor which I have scavenged from an old 5 1/4" floppy disk drive (do you remember those?) is controlled by a dedicated Stepper Motor control class written in C#.
You can start out with a look at the short video on YouTube that I made to show the motor running:
For now I just want to show you the video of the result and then later I will add some more detailed description about how it is done.
Peter