The improved version my rotary encoder breakout board is now available at Tindie. It has Schmitt triggers after the RC debounce for the encoder action. This allows for fast rotary action with minimal jumping.
Breadboard Helpers
I’ve updated the design of the breadboard helpers. These are designed to sit on the power rails of a breadboard. They provide screw clamps to firmly attach the wire from your power supply or battery. The updated design has a test point that you can attach an alligator clamp (or even scope probe) to.