| Who realizes this little project gets a device that monitors & displays the current refrigerator temperature, and that logs the time the doo...
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| Transmitting data from a capsule dangling from a weather or sounding balloon is not easy as it often involves expensive and sophisticated eq...
| This design is useful for speedy mobile robots and provides fast, contactless detection of obstacles ahead. Not only can it detect the obsta...
| A hollowed-out pumpkin with a candle in front of the house, children who will come to ‘trick-or-treat’ and beg for candy… Halloween is a fes...
| This Arduino-driven fixture enables the essential characteristics of many types of temperature sensor including silicon, PTC, and NTC to be...
| Even in the Internet & Wi-Fi age where it seems irrelevant just where you are at a specific time, it’s sometime useful to know if a visitor...
| The headsets used in light aircraft are subjected to some pretty rough treatment, particularly in flying training: repeated connections a...
| An audio drive indicator, especially with a Hi-Fi installation, can be a very handy instrument to check whether there is any overload pres...
| This simple compressor circuit controls the dynamics of a speech signal so that loud sounds are controlled to produce a more intelligible...
| This distinctive variation of a Christmas tree is made from a thin printed circuit board, which is cut in the shape of a spiral. This is...