VirtuaPin™ Digital Plunger Kit v4
[VPC-PlngrKit]

Wow... Another winner from Paul at VirtuaPin.

I can't compare with a V3 because I started with the new V4. The V4 setup does not rely on the hard-to-find the KL25Z development board you might be looking for. Instead, VirtuaPin has created their own comprehensive and easy to use controller board. It easily handles the plunger, encodes buttons to keystrokes using VPX numbering and nudges. And, it's easy to use. A challenge may be implementing the different .bat files and COM port identification. However, there are comprehensive instructions and examples. It has simplified button identification and wiring. This may seem functionally similar to other controller and hardware providers. But, you don't have to manage different board and software configurations that might have been kludged together. My choice for a game controller! Thank you Paul!