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The author wanted a very cheap and simple alarm for some of his possessions, such as his electrically assisted bicycle. This alarm is... -
Strip LEDs are available in different colours powered by direct current (DC) source. These LEDs are available as surface mount devices with... -
These days, music is a major hobby for the young and not-so-young. Lots of people enjoy making music, and more and more dream ... -
Most thefts happen after midnight when people enter the second phase of sleep called 'paradoxical sleep.' Here is a smart securit... -
Here is a simple circuit for monitoring the fuel level in vehicles. It gives an audiovisual indication when the fuel level drops alarmi...
