In the past I built a slider kit from ServoCity.  It was ok but rather short.   I was thinking about stepping it up in my next project and do an arduino controller pan/tilt so I can control exactly how slow I want to go programatically.   I was thinking this thing (https://www.servocity.com/pt2645-s-pan-tilt).  I have arduino experience, but not with servos.  It looks simple enough looking at this tutorial (https://learn.adafruit.com/adafruit-ardu...o?view=all). 

Any tips or advice?  Has anyone documented a similar build?