The useless machine is a simple box with a switch and motor, when you turn on the switch the lid opens and the arm swings out and turns off the machine and then retracts. It is so simple but brings a smile to the face of everyone that tries! The Useless Machine was not created by me, it can be found in Make Magazine and in numerous Instructables and DIY articles online.
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Dawn to Dusk Chicken Door Project
There are many advantages of having an automatic chicken coop door. The door will automatically close at night when the …
DIY Sound Localization Sensor
I searched for days trying to find a commercial sound localization sensor or info on how to build one. Sound …