Franzis Bat Detector Hard Case (sliding lid, no screws)
thingiverse
Removed the mic snorkel and added a slidable lid from https://www.thingiverse.com/thing:189264. The original STL file made Cura behave strangely, so I re-did it in OpenSCAD. Be sure to have your horizontal expansion setting right, otherwise you might need to tune the lid parameters or sandpaper the lid edges to make it fit properly. You can also add a drop of hot glue to the ridge at the rear end to fasten the lid. Use a 3mm LED with a 1k resistor and solder it to V_GND and V+ on the PCB (in addition to the wires already there).
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