been tinkering away for a little and loving this project.
decided on the need for a nice enclosure for my 1st PIR project, at this stage only PIR.. plan for temp, and any other suggestions... its a screw top, so base will be screwed to ceiling, when batteries need replacing, just unscrew cap and change.
Attached are the STL's for all with access to a printer and keen on giving it a crack... love your feed back, and or sketch with temp and anything else...
PIR_V4_Base.stl
PIR_V4_Top.stl
enjoy

its a