LimeSdr Mini Case

thingiverse

This is a case for a LimeSDR Mini. It has four screws holding it together for strength and there is additional plastic to support the antenna connectors and the USB connector. There's also some extra top/bottom so you can make a so-so foil faraday cage without shorting the board out. So, it's bigger than a case has to be but holds it a bit more securely. I use 3mm (M3) screws. You almost certainly don't need M3 nuts. M3 is close to #4 screws but I haven't tried them. I used metal foil to cage the inside for RF. I've included photos. The trick is to do it like rolling out a pie crust. Start in the middle and push to the outside. Trim with scissors so the foil doesn't get to the board supports. I used the USB and both antenna connectors to ground the foils. That might be wrong. The nut holder areas probably won't print great but they are usable. The actual board fit is very snug. The Rhino-3d source is included. I create the object out of the solids layer and then difference out the masks layer for holes. This is versatile since holes can be resized more easily. The screws areas should probably be drilled out. In my experience using the screw holes as nuts causes the case to distort because they are not 100% colinear, so either use 2 screws carefully or make the holes large enough to not bind. This is version 3. Changes: (a) slightly larger screw holes (b) slightly shorter USB support to enable USB3 more easily (c) ventilation lines added to the bottom