Water sensor circuit using 555 timer

Posted on Feb 7, 2014

The water sensor circuit is based on a 555 timer circuit and come common electronic components. The water sensor is made by two metal electrodes arranged very close that a drop of water (liquid) will bridge them. If the liquid ( water ) is very pure you may change the resistor value to 2. 2m ohms and if the circuit is give false alarm sensing you

Water sensor circuit using 555 timer
Click here to download the full size of the above Circuit.

may change the value of resistor to 220k.

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