The old DVD drive turns … into a laser microscope

Presently DVD drives gradually go out of use very few people already buy disks or write down them, and old disks gradually degrade, after all a chemical covering on pigs not the eternal. But for the unnecessary drive there is a useful application. For example, it is possible to make a laser microscope of it on Arduino (the note: upon two laser heads, that is two unnecessary drives) are required. It is an optical microscope which uses the focused laser beam for sample scanning. Scanning is carried out by laser movement on two axes in coordinate grids: x and y...