JLB Posted May 19, 2004 Report Share Posted May 19, 2004 I have built the Plant Watering Watcher circuit presented under Projects, "science related" circuits and works to a certain extent. Problem is that I find that the LED has only two states ( ON or OFF ), it does not dims gradually as the description states.As a matter of fact I think that the circuit, as it is, will only putthe LED ON or OFF, as mine does.I am mistaken ? It really should dim gradually ? If so, I will really appreciate if you can explain why.I plan to use it as a conductivity tester for salts disolved in water , in order to measure conductivity in micro Siemens, but not just High or Low. but continuously.Helpwill be appreciated.JLB. Quote Link to comment Share on other sites More sharing options...
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