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Build Log: http://mushrooshi.com/?cat=31
DJTechTools Article: http://djtechtools.com/2015/07/16/scratchbot-a-robot-dj-that-can-scratch-and-cut-records/

Here's the second demo of my automated turntablist. Both mechanisms are still in their early prototype stages, and I only today got a lot of the pattern code somewhat working. I need to calibrate the chirps and flares. The crossfader mechanism also needs some smarter programming to handle faster chopping; I might redesign it to mimic human fingers crabbing.

It's obviously not perfect, but it's getting better every day I work on it.

This was taken in multiple takes (Because I don't own 4 go-pros) that I edited together. You can tell because the rotation of vinyl changes between the "overall" view and the "turntable focus" view.

The crossfader mechanism and the scratching arm are 3D printed by my school, Texas A&M University. The entire thing is powered by an Arduino Mega2560 and synchronizes using MIDI signals from Traktor.

Music by mycutiemarkisagun: https://soundcloud.com/da_island_of_misfit_beats/its-always-sunny-in-philadelphia-trap

Special Acknowledgements to:

Tanil Ozkan and Yasushi Mizuno (Texas A&M University Mechanical Engineering Department)

DJTechTools

DJ Short-E (School of Scratch)

PVFM, EMP, and ToukuFM