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.
A lot of us country lovers powerboat, or rather one of its varieties — far sports travel. For them, the boat become not only a means of transportation, but also a kind of house, sometimes for quite a long time. But for the residents of the settlements located on the banks of rivers or reservoirs, a motor boat is an everyday mode of transport: whether to go for food in the neighboring village to the district center to the doctor, to go fishing or hunting — in many places this can be done only by water.
