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February 8th, 2010

Water Level Indicator

This project is a simple and practical measure and know the level of reservoir. The component IC CMOS 4066 used as switcher on any level detector/sensor that connect the negative polarity pin of each LED to ground. Buzzer will be sounded if full level sensor achieved.

Water Level Indicator

Source: iloveelectronic

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  • Mrx_karl

    I have made this, but the LED1 and LED3 are switched ON even when the water does not contact with the second and third wire. Supposedly, the wires are not closed and LED1 and LED3 are not switched ON. Can anyone please tell me what’s wrong with my circuit? Thanks.

  • Juwaan7

    plz tell me is transistor
     necessary?