Ben Heck's 3D printer beaglescope
 

What do you do when you have a broken 3D printer? Throw it away? Tear it down for the parts? Felix has a better idea: repurpose the old Makerbot Replicator with a microscope to make a controlled, precision microscope machine. Using the Beaglebone...

https://www.engadget.com/2018/08/26/...r-beaglescope/