LimeSdr Mini Case

thingiverse

This is a case for a LimeSDR Mini, boasting four screws that provide exceptional strength and stability. Additional plastic reinforcement surrounds the antenna connectors and USB connector, while an extra layer of top and bottom material allows you to craft a makeshift Faraday cage without compromising the board's integrity. I utilize 3mm (M3) screws, which are likely sufficient for most applications, although M3 nuts may not be necessary in all cases. The #4 screw alternative is also a possibility, but I have yet to experiment with it. To create an RF shielded enclosure, I employed metal foil, carefully rolling it out like a pie crust from the center towards the edges. Scissors are used to trim the excess foil, ensuring it doesn't encroach upon the board's supports. The USB and antenna connectors serve as grounding points for the foils, although this may not be the optimal approach. The nut holder areas might not print perfectly, but they remain functional. The LimeSDR Mini board fits snugly within the case, with a very secure fit overall. The Rhino-3d source code is included, allowing users to create the object from solid layers and then subtract the masks layer for holes. This method offers flexibility since holes can be resized with ease. It's advisable to drill out the screw areas to prevent distortion caused by non-colinear screw holes. In my experience, using screw holes as nuts can lead to case deformation. Instead, use two screws carefully or enlarge the holes to prevent binding. This is version 3 of the design, featuring several enhancements: (a) enlarged screw holes for improved accessibility, (b) a shorter USB support to facilitate easier USB3 connectivity, and (c) ventilation lines added to the bottom for enhanced airflow.