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The water cuts off sometimes where i live
so we have a tank on the roof
but sometimes the water cuts off for a long time and we use water but we don't know that it's from the tank
and each time the water cuts off i have to get on the roof and  remove tank cover to know how much water left
so i made this sensor to solve this problem
the idea is very easy.
Water conducts electricity poorly
so when the water reach the first sensor level , a 9v signal is sent to BC547 Base
and then the led glows.
i used a net cable and connector for the ease of use.
in my case, my tank is about 50cm high ,so i put a sensor about every 7cm.
The push button is very important for two reasons:
-Saving Battery
-and the most important reducing Ionization ,so the wires in the sensor part don't ruin

if you have any idea on improving it please leave a comment
and if you like this instructable please rate it
<p>You can improve your project using a low cost waterproof ultrasonic sensor. Costs around USD $7.00 <a href="http://s.click.aliexpress.com/e/NniUBA2" rel="nofollow">http://s.click.aliexpress.com/e/NniUBA2</a>. The piezo sensor is sealed, and electronic board is away from the measured liquid!</p>
My dear author please give some more details in the form of circuit diagram and materials required so that we can make it and give a cheers that we made it.thank you man
<p>Hi!! may i ask what kind of sensor did you use?</p>
<p>I've had similar problems with my water heater lately. It has been constantly leaking and just been an all-around pain to deal with. Unfortunately, I'm not as tech savy as some, so I had to do some research online. The solution that I was able to come up with is this water level sensor: <a href="http://vegetronix.com/Products/AquaPlumbRelay/" rel="nofollow">http://vegetronix.com/Products/AquaPlumbRelay/</a></p><p>Although I couldn't build it myself, this device came with a relay that I hooked an alarm to. Now, whenever my heater leaks, I am able to fix it before the whole basement floods. </p><p>Sorry I didn't have any technical device, just thought this might help, cause it worked for me.</p>
It's nice and simple circuit. I have an issue. The LED is very dim if i place 360Ohm series to LED. What could be best value to increase the brightness?
The 360 ohm resistor worked fine with me, you might want to try decreasing your resistor a little bit till LED brightness satisfies you. Not sure of the exact value, but if you have a datasheet for your LED, you may use some LED resistor calculator ( http://led.linear1.org/1led.wiz )
Hi there, a very nice fix for your water level sensor problems !! <br> <br>i really want to make one of these for myself too but am learning electronics and not too great with 'making my own schematics' ! <br> <br>i can read and follow schematics pretty well but just cant make them ! <br> <br>please could you include a nice clear picture of the Entire-Full Schematic that your little protoboard uses so i can also build one of these as i have the identical LED bar and really would like to make this as i have all the parts but youve used quite a few BC547 transistors, one for each LED segment i am guessing but please could you help a struggling electonics beginner out with the Fully Drawn Schematic please please please ?!!? <br> <br>Oh and 10 out of 10 for building this yourself instead of going to the shop and spending a stupid amount of money on a device that would have put you out of pocket ! <br> <br>Very Well Done !!! <br> <br>And many thanks in advance for uploading a Full Schematic for me if you can !! <br> <br>;-)
First : i'm very very sorry for not replying immediately as i was away of the site for a time<br> :(<br> Second : about the protoboard ,i actually made it without a schematic, and i used many point to point wires as you can see, so it's very hard to have an actual drawn schematic.<br> Third : a small tip ,don't use copper wires ,they rust in water and the device malfunctions.<br> I'm really sorry that i couldn't provide you with the schematics but try to work on it and thank you very much for your interest.
hai..can i know more about this project??
um, you have your conductivity of water backwards.<br>but I digress.<br>I'm lost at what you mean by &quot;net cable&quot;.<br>Also what do you use for a sensor.
water from contains salts ,so it conducts<br>net cable = &quot;internet cable&quot;=&quot;Ethernet cable&quot;=&quot;RJ45 8 wires cable&quot;<br>and i mean by the sensor .the wires it self<br>+9v is in water<br>when water level gets higher more wires are connected to 9v rail through water<br>and these wires are connected to transistor's base

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Bio: My name is ALI Essam, I'm interested in electronics and programming,but i'm still learning
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