This is a small but important part of the greater project. known as Scratch Markup Language
What's the idea?
We're creating a format for describing turntablism, as well as tools for recording, analyzing, sharing, and even recreating scratch performances with giant robot arms. The goal is two part. One: Create the largest library ever documenting scratches as performed by DJs the world over. Two: Create the first interactive scratch training tool.
This will cover how to build a Y cable to be used with a Vestax PMC-07 Pro to monitor / record the crossfader position.