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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A RESISTOR IN THE LAMP
Do you have old dual variable resistor (e.g., type SP-P to the same flawed)? Do not rush to throw it away. It is, in fact, the ideal mounting site for homemade sconces, floor lamps,...
Tricopter with a video camera
I spent all summer with her son, a soldering iron and Arduino IDE, not in the field with a copter, so now my free translation of article Swede David Windscale (David Windestål, I hope...
