| This design is useful for speedy mobile robots and provides fast, contactless detection of obstacles ahead. Not only can it detect the obsta...
All items tagged with .POST Article and project (55)
| 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...
| With the help of a quad opamp, a bi-color LED and a few passive components you can quickly build a simple signal level meter which has thr...
| For a change, this simple touch-sensitive switch does not operate by detecting the resistance of the skin between two points or measuring...