About this 3D model

This is a case for my DIY visual impairment aid. It uses haptic and sound feedback with a distance sensor to let people know how far they are from objects. It fits together with two M3 screws and even has braille for the buttons! For step-by-step instructions on how to make your own and a demonstration video, check out the instructable here: http://www.instructables.com/id/VIA-Visual-Impairment-Aid-Haptic-Sound-Feedbac/