Category Archives: Sensor Circuits

  1. [TC] DIY Auto-Balancing Surface using Servo Motors


    September 26, 2013 by MrJSY

  2. [TC] Breathalyzer circuit using 8051

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    July 29, 2013 by todayscircuits

  3. [TC] Arduino based distance sensor

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    July 19, 2013 by todayscircuits

  4. [TC] Ultrasonic Proximity Detector

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    July 8, 2013 by todayscircuits

  5. [TC] Remote controlled Spy Bot

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    June 28, 2013 by todayscircuits

    Here is a remote operated spy robot circuit which can be controlled by using a wireless remote controller. It can …
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  6. How to build Digital Electronic Lock

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    May 8, 2013 by todayscircuits

    Circuit Description The digital lock shown below uses 4 common logic ICs to allow controlling a relay by entering a …
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  7. Motion Sensor Light Switch


    January 14, 2012 by todayscircuits

    Motion Sensor Light Switch Circuit Today many available commercial motion sensor light switches on the market, one of the brands …
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  8. Leaked Gas Detector


    September 16, 2011 by todayscircuits

    Description:As shown by the gas sensor alarm QM, buck rectifier and regulator circuits, integrated circuits KD28, speaker Y and so …
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  9. Digital Direction Compass

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    August 31, 2011 by todayscircuits

    Circuit Diagram :   Direction :

  10. Water level alarm circuit


    July 9, 2011 by todayscircuits

    Description. Here is a simple water level alarm circuit that will produce an audible alarm when the water level reaches  …
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