What a great use for that old, or broken, VCR & mouse you have lying around collecting dust. This looks fairly easy to make, and the end results will improve your productivity.
This guide is to illustrate how to make your own “Knob”, very similar to the Griffin Powermate. Now, the knob I showcase HERE lacks some of the features, but mine can be built out of parts you have laying around the house. Mine didn’t cost me a penny, unless you want to count about $.02 worth of solder.
Learn more about making a USB scroll wheel