Distance Measurement Using Ultrasound

This Project uses Ultrasound to measure distance. Measured distance is displayed on LCD. You can use this digital output data in making many interesting projects such as accident proof vehicle or Robots, object identifier,  Sonar (detection of objects under water) etc. Sound is a mechanical vibration transmitted by an elastic medium. Ultrasound are of frequencies […]
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Automatic Street Light

An introduction: Needs no manual operation for switching ON and OFF. When there is a need of light it automatically switches ON. When darkness rises to a certain level then sensor circuit gets activated and switches ON and when there is other source of light i.e. daytime, the street light gets OFF.  The sensitiveness of […]
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Heat Sensor

Here is a simple circuit which can be used as a heat sensor. In the following circuit diagram thermistor and 100 Ohms resistance is connected in series and makes a potential divider circuit . If thermistor is of N.T.C (Negative temperature Coefficient ) type then after heating the thermistor its resistance decreases so more current […]
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