Sorry, somehow I did not see your last post until now.
I have been using the Olympus Pen Lite models, the E-PL1 through E-PL8. The -PL7 and -PL8 are quite nice for taking stills and videos. I am setting up a DMC-GX85, the U.S. market version of the -GX80, for streaming video. Why are you selling the -GX80? If the microscope has a classic, 1X c-mount photo port, you just need a cheap thread adapter to directly project onto the sensor.
EDIT: Here is an image I took for someone, of a -GX80/GX85 so mounted.
You can click on the image to see and save the 16 megapixel image.