For those DIYers that want to get into this area without spending a fortune, here's some notes on a surplus eBay Piezo Stage and a Voice Coil Motor (junk speaker) utilized as a focus stacking stage. I've developed custom controllers for the Piezo and Voice Coil Stages that operates from a Raspberry Pi computer without any additional support...and only require a single ~12VDC power source for the controller!
Be sure to follow the threads that go back to the PM site, this is where the details reside.
Best,
http://www.photomacrography.net/forum/viewtopic.php?t=39962https://www.dpreview.com/forums/thread/4421829
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