A simple feeder for small birds can be done literally in minutes, using a tin can and a stick of wood or a suitable diameter of the branch.
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MICROPHONE OUT OF SCRAP MATERIALS
It is not difficult to do even the novice hobbyist. And materials needed for this available. The basis of design — a primer of domestic microphone MD-47. The device consists of a...
SCHEMATICE FOR TOMORROW…
Most modelers relation to schematic gliders and rezinomotornaya, to put it mildly, condescending: "three stick a piece of tissue paper and even after running not immediately fall to the...
