This is a simple adapter to mount an iPhone to a microscope. The eyepiece clamp is optimized for a 28mm lens but might fit larger eyepieces. I omitted additional clamps for now to simplify the print and to allow adjustment of the iPhone so the image comes in clearly as it's tricky to get everything to line up correctly. Since the adapter has a clamp it's possible to move the adapter and phone up or down on the eyepiece to get the correct focal distance. I clamp the iPhone to the adapter with a rubber band which seems to hold it fairly securely but still allows room to adjust it. This design was inspired by FlorentBonnefoi's nice design at http://www.thingiverse.com/thing:178047.

This was designed in Rhino 5 and printed in natural HIPS on a LulzBot Mini using Cura. Extruder temperature was set to 240C and bed temperature set to 60C.Used the Normal quality print setting in Cura. You will probably want to print with support for the clamp.