An Afrimakers project in Instructables:
Image courtesy of Afrimakers
We used a simple cheap webcam to make a microscope. In short, a small hack to the optics of a standard webcam with an adjustable focus-lens, allows to create video data, with a magnification of around 100 to 400x (depending on the model) at a working distance of a few mm. The highest magnifications can be achieved by inverting (putting upside down) the lens. We used white LEDs at first but the picture wasn't clear enough ,so we used A Flash Light for brighter and more clear view.More here
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