In electronic equipment with high density have more difficulties to get to various units and parts when setting up or replacing them during the renovation. Therefore, in the serial devices are widely used in various moving joints of construction elements. However, in Amateur conditions is not always possible to produce such compounds.
I have developed a small swivel to boards, light covers and walls of buildings. Combining some PCBs (Fig. 1) are compact unfolding structure. The same can be produced fully or partially drop the case.
Details associated with copper wire, forming a loop perpendicular to the axis of rotation. Board and the housing is desirably made of fiberglass with high strength. If you use a more brittle material, hinges connecting strips made of fiberglass, and it’s already fixed parts.