to insert the keys in the front door on a dark landing, and requires some kind of illumination. Well, when a box of matches or a lighter. This problem will not arise, if the door closer to the lock pin miniature flashlight button: fortunately now there are many suitable options fobs illuminated.
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My technical creativity began as far back as I can remember. Of course, it all started with models and various useful things. My simple crafts were born at the end of the common yard, in...
Pumps water by day, guards the house at night
The automation device I designed is intended for farmers and owners of dachas with an autonomous water supply system whose key elements are a water source (river, lake, well or borehole),...
