Water Level Detector

aris00 says: Jun 12, 2011. 4:21 PM

Also good was a suggestion from a guy "Refueler" in some boating forum:

Use a smoke alarm with a test button. Connect the terminals of the button to the water detector (eg. as described here). Bonus: still works as a smoke detector! (smoke on the water ... )

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triumphman says: Mar 18, 2011. 9:05 AM

I have tried this with a talking catfish wall plaque. I connected two wires to the switch and put in some water. Nothing happened. I tried foil spaced apart, added water, nothing. The plaque has 6VDC battery box (4 AA) and also a 6VDC wall electric transformer power. What am I doing wrong. All I need is for the water to complete the circuit between the wires. Is there a simple switch I can make? But so far no luck. Can you help? Thanks.

Thihabala says: May 6, 2009. 11:11 PM

hey may i know where did you get this macdonald's toy?

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jedi pen-gui-n in reply to ThihabalaAug 11, 2010. 7:34 AM

McDonald's

Thihabala says: May 6, 2009. 11:11 PM

hey may i know how many volts is out-put?

Thihabala says: May 6, 2009. 10:49 PM

hey i am doing my project also may i know can i connect out-put to relay coil or remote control? So that when the water level up the water valve will be shut off automatically

2high says: Mar 21, 2009. 5:43 AM

Will this work for bigger water tanks?

pwlalala says: Nov 19, 2008. 10:21 PM

Hi
i am doing a project
i would need help from you guys

Questions:
When the wires touched the water, will there be a short circuit or electric shock to the user?
Can this circuit be combined with LED display and comparator circuit board? If yes, how to you connect it?

THANKs THANKS! please reply soon! =)

mechanicalguru2112 says: Aug 3, 2008. 8:30 AM

man you saved my basement I made one with a beep horn very loud and to my surprise the basement flooded and you saved me =]caught it in time

NE-Phil says: Jul 24, 2008. 5:14 AM

Nice instructable. This would also be useful in a basement, inside a sump pump basin to let you know if the sump pump has failed. If the sump pump fails, the water level reaches a certain point in the basin and the water level detector would let you know.