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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Temperature Display Using LCD

Here is a Simple Temperature Display Circuit using LCD (Liquid Crystal Display). For Heat Sensor we have used IC LM35 (Precision Centigrade Temperature Sensors) whose Output voltage is linearly proportional to the Celsius (Centigrade) temperature. Output of LM35 IC is 10mv/degree centigrade for eg if temperature is 35 degree, then the output of sensor will […]
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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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