Water Level Indicator with LED - PCB Tutorial

■ JLCPCB Prototype for $2(Any Color): jlcpcb.com
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This circuit that can indicate the water level (Or any other conducting liquid) in a tank.. The circuit is made by five BC337 transistors, five LEDs, five 330 ohm Resistors and one Buzzer.
Here we are using transistor as a Switch. Initially there is no voltage applied to the base of the transistor and the transistor is in OFF state (no current is flowing through collector and emitter) and LED is OFF. When the water level reaches to electrode in the tank, the positive side of the battery gets connected to the base of the Transistor through the water. So when a positive voltage has been applied to the base of the transistor, it gets into ON state and current starts flowing from collector to emitter. And LED turn ON.
* I recommend using stainless steel electrodes to prevent oxidation of them by the electrolysis phenomenon.
After trying the excellent service offered by JLCPCB I recommend it, the quality of the circuits is high, customer service is always available and professional, the time of realization is short and the delivery of PCBs is by express courier.
JLCPCB is a great place to get hight quality custom circuit boards at an extremely low price, you can buy 5 PCB Boards (Any Color) for 2$
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More About JLCPCB: support.jlcpcb...
Components:
- 5x BC337 Transistors
- 6x 330Ω Resistors
- 5x LED 5mm
- 1x LED 3mm
- 1x Buzzer (Active Buzzer)
- PCB: (Ready for jlcpcb.com): bit.ly/2WyLN2h
*Don't use my PCB for profit or sponsored videos.
This circuit must be powered with 5V DC, below I leave the references to view: the electronic circuit diagram, the PCB and the Gerber file to be uploaded directly on the JLCPCB website.
- PCB (Printed Circuit Board): 6:24 (FRONT) - 6:30 (BACK)
- Circuit Diagram: 6:37
- Gerber Files (Ready for jlcpcb.com): bit.ly/2WyLN2h
*You can see the complete procedure to upload the Gerber file on jlcpcb.com in the video from 1:58
**JLCPCB have a Technical Support for exporting Gerber files from many software at this link: support.jlcpcb...
For any other questions you can ask me for explanations in the video comments:)
WARNING: This video is only for demonstration. I don't take any responsibility for damage to things, people and animals.
Music:
- Iron Man theme (Intro JLCPCB)
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■ LINK
- KZbin: / stefano91ste
- Instagram: / stefano91ste
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#Water #Electronic #Tutorial

[@Stefano91ste]

Hi, I solved the problem of oxidation here: kzbin.info/www/bejne/pGqqc2Okm9x6btU

[@lezbriddon]

sensor wires will electrolyse due to dc current flow, common wire should be AC coupled by using a square wave and a series capacitor. this ''improvement'' is not my own but common knoledge from magazine projects like this in the 60's and 70's. (yeah i'm old)

[@Stefano91ste]

Hi, thanks for the advice

[@patrichausammann]

Yes lez briddon, you're right, the exposed wire ends do corrode on DC power. So AC electricity would be preferable. This corrosion also appears on the cheap moisture meters, because the copper traces corrode very fast in continous operation. Maybe more expensive materials like gold or titan would slow down that process, but alternatin current would still be preferable to slow down the occuring oxidation of the material.

[@jaunjaun43]

lez briddon fh

[@djtaylorutube]

People have already commented on the electrolysis but you could also keep exactly the same circuit and use reed switches on the outside of the container, vertically in a line and then inside the container, have a tube in which there's a magnet glued to a float. This will work in any liquid.

[@Stefano91ste]

Hi, is an excellent idea! however, it will also be necessary to add resistances on each switch to simulate water resistance.. it is more complicated but it could work :) Thanks for this comment!

[@CrazyCoupleDIY]

I think ur approach is pretty good in this context

[@Scootertuner420]

Nice and simple idea. Maybe for the next version you use a ultrasonic distance sensor. Water is a really good reflector, so the readings are accurate, so you can add a display with exact value and it can´t corrode. There so many things you could improve with that version. You could add a button, that wakes up the microcontroller from deepsleep for a minute. In that case you can run it for a very long time on a small battery.

[@Stefano91ste]

Thanks for your suggestions :)

[@DrParamon]

In order to show schoolchildren in a physics lesson is a great thing. For real use is not suitable. Electrodes oxidize and rust very soon.

[@davidhaney1394]

oh shut up

[@Stefano91ste]

Thanks Доктор Парамон

[@Stefano91ste]

@David Haney Please Keep calm

[@Stefano91ste]

Hi, I solved the problem of oxidation here: kzbin.info/www/bejne/pGqqc2Okm9x6btU

[@Slingshot-YouTube-Channel]

Cool Project friend.

[@Stefano91ste]

Thank you :)

[@skyem5250]

This is a really bad design. First of all, water is not conductive. Impurities in the water like metal ions will make it slightly conductive, but the resistance is so high that this circuit will not work with most tap water, because it relies on NPN transistors. NPN transistors require current to activate, and the highly resistive water will limit the current below the transistor's threshold. You could mitigate this somewhat by using MOSFETs, but that still wouldn't fix the problem.

[@Wilan1415]

Hola, sin ofender, está faltando una alarma que suene cuando quede poco líquido. Gracias.

[@Stefano91ste]

I make it in another video about this project

[@rfjgfude]

Cool design. Next tutorial should be how to make electrodes that don't oxidize/rust :p

[@ingussilins6330]

Use 2N7000 mosfet , its work with voltage..

[@Stefano91ste]

It's a good idea!

[@Stefano91ste]

Hi, I solved the problem of oxidation here: kzbin.info/www/bejne/pGqqc2Okm9x6btU

[@GujaratiKanudo]

this is for few days(7days max) good.. than useless coz of corrosion on plates..

[@Morganthesparky]

I’ve made the exact circuit before. But what I have found, which isn’t a terrible problem, is your positive voltage from your electrode at the bottom, once that connects to any of your base pins, you have started an electrolysis process, if you look close to your base pin wires, you will see small bubbles forming and possible start to float, this is hydrogen being generated and your wires will eventually get corrosion build up and inaccurately read your water level, and or dissolve completely. What I did to correct this problem was to have a ground at the bottom of the tank rather than positive voltage. Then used XOR logic gates to detect that ground once the water level rises. Therefore no positive voltage is in your tank, no hydrogen is produced, and your wires won’t corrode. But. Over all good job. Jlpcb is a great place for boards. Keep going. Try using logic gates. Or a base to ground driven transistor.

[@saulverdugo4950]

Morgan Johansen Please can you send me some pictures or more info. It’s very interesting what you’re commenting. Thanks. [e-mail]

[@Stefano91ste]

Thank you Morgan Johansen for this very useful and constructive comment, In the future i try to using logic gates for another version of this circuit :)

[@arumallanavya8431]

Can u tell where did u connect white wire as black and red are negative and positive

[@Stefano91ste]

Yes, black and red are negative and positive

[@serhumanonaosouumetconfia]

could anyone tell me how i can make a arduino read the leds shown in the video?

[@markzalavari1780]

5 different lenght of steelcor rods and pcb connected to out of fluid.

[@billykunkel6618]

i am a volunteer fire fighter im looking for a water gauge for a 8 foot tall tanker. would this work for it and it needs to be for a 12 volt power.

[@Pietro1976]

ciao vorrei realizzare pero prima capendo come si disegna un pcb sul pc quale programma usare vorrei realizzare un semplice indicatore di livello usando uln2803a e poi farlo stampare da dove ti rivolgi tu potresri aiutarmi passo passo magari ti invio lo schema ti chiedo aiuto grazie

[@Stefano91ste]

Ciao, per disegnare i PCB io uso sprint layout 6 e per la stampa jlcpcb.. in alternativa per disegnare pcb puoi usare easy eda che è un software fornito gratuitamente da jlcpcb. easyeda.com/

[@yohandarshana]

Is this water can drink ?

[@Stefano91ste]

If you don't let it stagnate, Yes. If you don't leave the circuit running for a few hours, Yes. But why do you all want to drink the water of my experiments? :) The video is for educational purposes.

[@vijaypanchal9407]

👋 hello Sir me problem 😒 Mene be led water level banaya hai same haa mene us me 🔋12v_1A ki saplay laayi ha lekin ye led bahut kam galo kar rahe hai kya aap bayaye ge ki kya karna chye

[@mohamedmalkhaan4111]

Nice project, thank you for sharing. i have done same for my two tanks and powered by 9v battery and with is few days LED brightness is low its not full time on when i need to get levels of water turning on the switch any suggestion in addition used wire is network cable and length approximately 30feet.

[@Stefano91ste]

Hi thank you! about the brightness, if low after a few days, it may be caused by the low battery

[@mrrusnam3836]

Where is the black cable at the ground connected? Where are the white and red cables at the Vcc 5 volt connected?

[@Stefano91ste]

Red = VCC Black = GND White = From +5V to the bottom of the glass

[@garymucher9590]

If you designed this for pure water, it won't work, there has to be some impurities in the water to conduct electricity. Tap water is okay, it has the impurities. Also won't work as a gasoline level circuit for the exact same reason, gas doesn't conduct electricity. And use copper for the electrodes. I have used this idea for decades now and it works fine. Another issue, if you are going to use this and there is any chance of the electrodes (sensors) contacting each other, use a current control resister both in the power supply line to the sensors AND in the line connecting to the base of each transistor.That way IF anything shorts, the circuit will not short the power supply and burn the circuit up. Just a thought!

[@Stefano91ste]

Hi, thanks for the advice, the circuit is mostly designed for educational use. Copper oxidizes too quickly, better than stainless steel or gold-plated contacts.

[@СергейСтуденецкий-у1г]

So simple.. Beautiful! It won't work with distilated water))) Electrodes simple to wash, it could be stainless, it could be different lenght. We use it everywhere. But we allways need relay output (simple or solid state relay) to control valves, emergency lamps or pumps. What about work with liquids with different resistance wastewater or pure water (near distilated)? Maybe use some potentiometer (in some controllers we could see few switches to chose resistanse of liquid).. Or much higher voltage but use short pulse. What you (or anybody) think about that.. P.S. somebody offer to use pressure sensor to control tank liquid level. What you think about that? I think, that is expensive. I can't visualize how change or clean pressure sensor in tank with wastewater))) Liquid sometimes not only liquid)))

[@Stefano91ste]

Hi, Thanks a lot! With waste water or anyway not pure it works the same, perhaps with salt water there would be too much conductivity.. We must experiment:) Regarding the pressure sensor I think it can be very convenient, but in that case you would need a more complex circuit and managed by a microprocessor like Arduino.. it would all be more expensive and complicated. Then it also depends on where you want to install it and for what purposes. Let's say that using a pressure sensor you would get a completely different circuit, which would nullify the educational purpose of this video .. ie create something wonderful with very few common components :)

[@frederickearlburgos9689]

Can i use 12volts as source? And what are its components?

[@Stefano91ste]

No, maximum 6 volts DC - find the list of components in video description

[@dunghang1021]

I want to buy the complete set as above, where can I buy it?

[@Stefano91ste]

Hi, I share my PCB gerber file, you can use it to order pcbs from manufacturers like JLCPCB

[@DJMimmoMiX]

Per dare maggiore utilità al sistema, si potrebbe implementare con 2 uscite, e 2 relè, 1 a doppio scambio NC NO, da abbinare ai led 100% e allo spegnimento del 25%, per fare in modo che se si usa il sistema per qualche cisterna con pompa, (ovviamente ci vorranno dei contattori) allo spegnimento del 25% si attiva la pompa, al 100% si disattiva; sulla seconda uscita che si attiva con il led ALLARME, si potrebbe collegare la linea di ingresso della pompa in caso di superamento della soglia 100% si interrompe la corrente del quadro della pompa. (un po' troppo ripetitivo coi termini ma per far capire in modo veloce)

[@Stefano91ste]

è un'ottima idea, anche se non penso si possano pilotare dei relè con questi transistor, va rivisto un po tutto il circuito :)

[@roberthalim2913]

Just in my perspective. Its not practical to have a buzzer coz not all the time this a person who will hear it and shut the pump/line of. Instead you'll probably need a cut off or limit switch when it reaches the limit and start when in low. Just my opinion. Its good to have a water level indicator just add a high/low limit cut off/start. Thanks ive learn alot from your vids.,😊

[@Stefano91ste]

Hi, thanks for appreciating my work! In these days I am working on a new version of this project with ULN2003 (Able to drive a relay) - In the current version unfortunately you are very limited by the use of those simple transistors. Regarding the sound alarm, I don't think I can keep it.

[@mx9917]

@@Stefano91ste would a probe circuit when closed not trigger a 5v relay? Luv your work. I bought the PCBs to use for my camping water storage. Plan on making a probe using PVC tube and closed end aluminium rivets with the copper probe cable soldered to the back of the rivet. Hope it works. This might solve the oxidation.

[@johnnz4375]

Nicely build, but when you use a DC voltage for the sensors there will be electrolysis what can corrode the electrodes and pollute the liquid.

[@Stefano91ste]

it's true, but with 5V and

[@johnnz4375]

Electronics Projects - Stefano91ste , i Guess that it would be ok if you use a button to see what the water level is, but personally I wouldn’t leave it on all the time. There are similar designs that use an small AC source to counter act this problem. But overall a very tidy build.

[@lezbriddon]

common wire should be square wave with a series capacitor to remove dc bias and generate AC current flow through liquid.

[@JamilKhan-hk1wl]

@@johnnz4375 yeah the circuit only runs when a button is pressed, so the current only flows for a few seconds

[@Stefano91ste]

Hi, I solved the problem of oxidation here: kzbin.info/www/bejne/pGqqc2Okm9x6btU

[@nloggraficas]

I use to install analog tank level controls for water pump and this is very good, electrodes are in the market and are cheap, you can make a complete water level control wich would control by low level cut off, high or over flow, you are just half way to make a complete system, it can be use in tank or in wells, rivers etc. , many uses, good job 😎👍🏼🇵🇷

[@Stefano91ste]

Hi:) thank you so much!

[@rrraghucreations9533]

Can u make complete water level system piz

[@Stefano91ste]

In the future I will do something else

[@duketal1]

very simple and well-explained bro can you please tell me the sensor wire how meter will be long? because long distance there will be voltage drop so what will I do please tell me it will be very grateful to you and someplace bc 547 transistors are used? so will one will be best

[@Stefano91ste]

Hi, the cable can easily reach 10 meters in length, about the BC547 I didn't understand what you would like to ask me.

[@duketal1]

@@Stefano91ste my question was that if the sensor wire would be more than 10 meter then would their will be a voltage drop ?

[@Stefano91ste]

For 10 meters of cable there will be no problems, 50 meters, for example, may already be problematic.

[@duketal1]

@@Stefano91ste what will be the solution for this type of problem if happened?

[@nirmalsingh16]

Paaji do pcb mere ko mangwa do mere ko ye account kholna nahi ata

[@Sanjeet-Electricals-]

Please bhai ye water level pcb delivery karwa do 10 pic

[@Stefano91ste]

English please!

[@CrazyCoupleDIY]

Good project, but same as anyone else I am a bit worried about the oxidation process

[@Stefano91ste]

Hi, I solved the problem of oxidation here: kzbin.info/www/bejne/pGqqc2Okm9x6btU

[@michaelmclaren750]

Great tutorial and tidying up of similar projects. Could you redo the pcb with a push button switch so it is not always on and only used to check water level. Great project for teaching circuits and soldering skills 👍

[@Stefano91ste]

Thanks a lot! To do what you say just add a button that interrupts the + 5V wire

[@michaelmclaren750]

Yeah that would be easiest, it would hopefully stop the corrosion from electrolysis, and turn off buzzer at the same time. 👍

[@Quencyking911]

newbie here ...can this be done a breadboard?

[@Stefano91ste]

@@Quencyking911 Hi, yes is possible like this: kzbin.info/www/bejne/laSYhaigmMejeJYsi=hh6a7NEpObegbuWP

[@icecreamtruckog3667]

A float and variable resistor would work better, more accurate and last longer plus the liquid doesn't need to be conductive.

[@Stefano91ste]

mmm ok .. but what kind of float could be used to measure the water level in a tank, for example, 2 meters high?

[@djblackarrow]

0:46 Question: Where are the Pull-down resistors to prevent Transistor-switching without Water on the Base-Electrode? (due to electromagnetic induction to the Base-Wires) 6:41 Question: Where is the current limiting resistor(s) for the Transistors Bases?

[@Stefano91ste]

Hi, 0:46 - It can't happen 6:41 - I didn't foresee it because the water already has its own resistance, but actually for other types of very conductive liquids it could be useful.

[@saved500]

Is there a way to keep only 1 led on at a time?

[@Stefano91ste]

Hi, at the moment nothing comes to mind with this transistor configuration, because they are all managed individually.. The simplest solution would be to redo this circuit with an IC that has the possibility to choose between DOT and BAR mode

[@santoshachhami6862]

Can you provide this PCB board ???

[@Stefano91ste]

Hi, In video description there is link to download the gerber file, then you can order PCBs on jlcpcb.com

[@KSingh-b6t]

Where's circuit schematic diagram

[@Stefano91ste]

Hi, read video description

[@gauravumbarkar9141]

This project is uneconomical for use un domestc uses i have use this project to many costomer but this is very costly by wire lenth

[@Stefano91ste]

Hi, It is not expensive, and anyway the video is designed for educational purposes

[@servandotlatilpa2960]

Bluetooth?

[@webblab2415]

agree, in scope of bigger water tank (even not too big, as it's on video thumbnail) it's technically too complicated, too many wires to too many sensors on walls of a tank. Better solution would be pressure measurement - sent to a controller AD input (PIC or ATMEL) , just one sensor on the tank bottom, just one 3 wire cable to "control unit"..

[@Stefano91ste]

it's true what you say WebB LaB, but doing it only with some transistors is a great satisfaction. Please note that the video is for educational purposes only and the circuit is designed for electronics enthusiasts like me, I don't want to market and sell a new product

[@Stefano91ste]

Servando Tlatilpa - I did not understand what centers the Bluetooth

[@therealkcmill2877]

what about the opposite... use it in a closed loop liquid system like a coolant system on a pc and it alarms when it gets low?

[@Stefano91ste]

If you find a way to seal the hole from which you pass the cables you can do it

[@XavierArte]

Thanks. This project is interesting but in my case I don't have access to the inside of the tank and I am interesting to know when the tank is empty rather than full. It's a common water tank for house that stop to be filled with a mechanical process. What I am interesting is to know the water level and when it's empty. Is there a way to check the water from outside the wall? Wall is in polyurethane less than 10 mm tick. Thanks.

[@Stefano91ste]

Honestly I can't think of anything to measure the water level without having access to the tank.. apart from a thermal visor.. but it would be a complicated and impractical system

[@XavierArte]

@@Stefano91ste Thank you for your answer

[@Akash.Singh4]

How to solve the electrolysis process in terminals?

[@Stefano91ste]

Using stainless steel or gold plated electrodes, but with 5V and a current of

[@Akash.Singh4]

@@Stefano91ste Stainless steel doesn't work ! And gold plated electrodes are bit expensive, I also heard about Nobel metals which are electrolysis resistant but they're also expensive.

[@Stefano91ste]

but with 5V and

[@Morganthesparky]

Ground detection circuit using logic gates, Ground your water, then that will trip the XOR gates. No electrolysis.

[@Akash.Singh4]

@@Morganthesparky Have you any circuit?

[@abdelrahmantalks]

Can I use the same circuit in oil ?

[@denisemiller7387]

I like your water level board can there be a low water alarm added to it? Do you have these boards for sale? Thanks

[@Stefano91ste]

Hi, thank you:) Maybe in the next versions of this project I will add it.. I have no more boards available, but in the video description you will find the gerber files to order them on jlcpcb :)

[@bikertoyztm7552]

But if there is distilate water or liquid with non electric conductivity?

[@Stefano91ste]

if the conductivity is equal to 0 then it doesn't work.. but if it's just above zero then it will work. With tap water always works.

[@bikertoyztm7552]

@@Stefano91ste Im understanding. But there ia a problem with enductivity. In oil this doesnt works.

[@Stefano91ste]

The circuit is designed for tap water, lake, river or canal (Not for oils, fuels etc.)

[@Sanjeet-Electricals-]

Get me 20 PCB deliveries, I'll give you money

[@Stefano91ste]

Hi, buy them directly from JLCPCB, it's faster and cheaper.. Follow the gerber files upload procedure in this video

[@Sanjeet-Electricals-]

I had asked, but I did not take my brother, two delivery heads will give you money

[@radosawd8685]

zarąbiste a właśnie takiego czegoś szukałem do wody 1000L na ogrodzie

[@СергейСтуденецкий-у1г]

Buy F&F PZ-832 in every shop in Poland)))))

[@aleksarishin6936]

Самому печатку сделать, религия непозволяет, 4 резюка и столько же транзисторов.

[@Stefano91ste]

english please, I can not translate

[@phoenix-hf2ct]

Great video. Wanting to replicate the project, I wanted to know two things: the first if the card can feed it at 12 volts dc, the second if in place of the buzzer I can mount a 12 volt DC relay. Thank you.

[@Stefano91ste]

Hi, thank you :) 1) No, Max 5Volts DC 2) It could only be done by adding a power transistor, as it is the circuit is not able to drive a relay

[@wahyualhadza4759]

Is that circuit can work in tank with capacity 1.200litres ?

[@fertegli]

I used it in a big tank that yours, and work ok, but I used AC common signal to avoid electrolisys.

[@Stefano91ste]

Yes, it works

[@nA-vu3qw]

The project is very faultless and useful, thanks for the demonstration. Hello! from Saltillo, Mexico.

[@Stefano91ste]

Thanks you:) Greetings from Italy

[@rahulmaurya5348]

Hahaha I am using 2n 2222A these days 😅😅😅

[@bvlog675]

can pcb devices use 12v dc voltage I try make it for my automatic pump

[@Stefano91ste]

No, only 5V dc.. if you want to feed it at 12v you have to add a LM7805 voltage stabilizer, so you have 12V in input and 5V in output

[@bvlog675]

I want to connect the 25% indicator to start the pump using a 12v dc relay are there any suggestions??

[@frederickearlburgos9689]

Whats the volts of your source?

[@Stefano91ste]

5 Volt DC

[@jakub2190]

It would be a good idea to add a base resistor to each transistor. What do you think?

[@Stefano91ste]

Hi Jakub - it's a good idea, as long as you use this circuit for normal tap water you don't need the resistors at the base, but if you want to use it for much more conductive liquids (for example salt water) a resistor at the base of each transistor would be perfect !

[@sukapuratech1228]

genius.. simple. but effective. do you have another sensor water level beside electrode ??

[@Pietro1976]

ciao scusami se ti rompo pero sei l unico che mi risponde ho creato il pcb con easyeda vorrei che tu lo controllassi e mi dessi l ok per poterlo realizzare e creare il file per poi poterlo inviare alla casa produttrice puoi aiutarmi grazie mille

[@Stefano91ste]

Ciao Pietro, Di quale pcb si tratta? Per questo progetto ho già il mio che puoi scaricare

[@Pietro1976]

@@Stefano91ste io ho gia un circuito sono riuscito a disegnare anche il file per creare il pcb vorrei se fosse possibile se gli dai un ochhiata per vedere se fosse tutto al suo posto e se non ci fossero errori poi vorrei sapere si paga la spedizione alla azienda dove ti sei rivolto tu grazie mille

[@Stefano91ste]

Ma che circuito è? perchè anche se gli dessi un'occhiata posso dirti se le piste sono giuste o no.. poi per le dimensioni dei componenti ecc dovrei avere in mano tutto il materiale

[@Pietro1976]

@@Stefano91ste se ci scambiamo gli indirizzi mail ti invio tutto e puoi controllare se non ti crea una perdita di tempo

[@Stefano91ste]

@@Pietro1976 Inviami tutto alla mail che trovi nella descrizione del canale, appena posso lo controllo :)

[@elosurfer6238]

Really cool! Im going to try this

[@srilanka82]

Okay 👌🏽, this is great. Btw did you check this one with actual water tank. I have checked, with the distance it’s not working. Normally we are using overhead water tank. We have to place this unit alt least in near the water supply value. So distance between water sensor and circuit aprox. 15m. I think current is not enough for this distance. Any surjections ?

[@mariopellegrino617]

separate leds from the board

[@s.m5201]

Can you sale pcb kit 1pcs to me, because in video I have seen you order more than one.

[@Stefano91ste]

Hi, I shared the gerber file to buy the pcb from jlcpcb. It's cheaper and safer, it would cost me too much shipping and I can't take responsibility for the courier.

[@bogdanmitu7624]

Hei dude dc te ai abonat la nine

[@MrPDawes]

Surprised you didn't use the PCB with contact points at the levels you need for sensing, but I guess you want to be able to adjust the thresholds depending on the tank size being used.

[@Stefano91ste]

Making a customized pcb means having to put it in a specific tank only, but it's still a good idea

[@umariftikhar8115]

Ye apne Jo circuit draw Kiya ha garbar file me ye ok ha kisi Chez ko edit to nahi karna pary ga? Koi problem to nahi is me isy order Kar saktay ha????

[@Stefano91ste]

English please, I can not translate.

[@Sanjeet-Electricals-]

Bhai please hmara delivery karwa do hum paisa de denge

[@Stefano91ste]

English please!

[@Tera_Hai]

I'd use float switchs fixed to a fiberglass rod so it could be used on any liquid in any size tank.

[@ivangaribogutierrez69]

how you turn off the buzzer when the thank is full ?

[@Stefano91ste]

By reducing the water level, the buzzer indicates an alarm status, above the maximum level

[@kiddokids24]

When I upload the Gerber file to JClpcb has come error massege as follows Your review has fail What i need to do plaese i am student

[@Stefano91ste]

Hi, it's a strange thing.. I checked and the file work.. Try again (download again another copy of the file), and if it doesn't work contact me at the e-mail you find in the info of my channel, send me a screen of the error that we try to solve the problem. If necessary I will send you another archive with gerber files. Don't worry, I will help you!

[@irfantirta7397]

Di mana saya bisa beli kit air bak kontrol?

[@Stefano91ste]

Hi, I do not understand

[@ahmedjamil153]

hi sir i want to 6 counter metter bord every counter metter count and 2counter metter is start if any counter metter is stop to start on same counting posiation

[@Stefano91ste]

Hi, I do not understand

[@konstantinkonov]

oldschool analog project, cool

[@kharbeqmaro175]

Can use this level indicator in Big diesel tanks ?

[@Stefano91ste]

No, since diesel is flammable.. I thought this circuit only for water

[@AbuMona81]

Will the alarm remain uninterrupted when the level is top?

[@Stefano91ste]

Yes, because the red LED is thought of as an alarm state, meaning that the water must never reach that level, and if it reaches it it must be lowered. however being outside the pcb, a switch can be placed between the pcb and the buzzer for turn off it.

[@andreykrasehin2823]

Правда, так и не понял назначения гайки М32 в конце видео

[@secret-jj2ji]

Is this going to work in larger watet tank?

[@Stefano91ste]

Hi, theoretically speaking YES, in practice I only tested with tanks with a maximum of 1000 Liters.

[@secret-jj2ji]

Tnx u

[@secret-jj2ji]

@@Stefano91ste tnx u... 😊😊😊

[@Edmorbus]

Can you make 12v Battery low voltage cut off circuit 11.3v cut off

[@Stefano91ste]

Hi, I put it in the to do list, then if something interesting comes out I make a video :)

[@joead4613]

I look forward for the next video and I hope in the next video, the electrolysis issue will be solved. I saw people commented about capacitive sensor and I'm interested of using it but I don't have the knowledge as I'm still studying the basics. By the way, I like you video as it is very useful for me to use at my home because we need to fill our water tank whenever water is available due to a problem such as my residential area water piping is aligned with the industrial water piping so we need to share the water by ration. The water will be available for only 5 hours max and sometimes 1 hour. Thank you.

[@Stefano91ste]

Thanks to you :) I haven't decided yet what solution to adopt to solve the electrolysis problem.. we'll see xD

[@Stefano91ste]

Hi, I solved the problem of oxidation here: kzbin.info/www/bejne/pGqqc2Okm9x6btU

[@KnutarnOffisiell]

@@Stefano91ste But how I solve the when the tank is 40L and i need to put rod in it 4pic :) Wil stanles steel rod work? :)

[@munihacks8459]

You r amazing in electronic experiment thank for share your experiment... Thx experiment wala

[@Stefano91ste]

Thank you to appreciate my work:)

[@praveenlovesutube]

What should be the power supply value ?

[@Stefano91ste]

5V DC

[@hugobracamontesbaltazar]

Nice project, thank you for sharing.

[@Stefano91ste]

Thank you for appreciating my work

[@JDayid]

El buzer queda siempre prendido hasta que el nivel del agua baje

[@Stefano91ste]

Sí, el LED rojo es un nivel de alarma (más del 100%). Puede montar un interruptor para detener el timbre.

[@javiaronak]

Hii Sir, your all video are amazing and perfect explanation on every video sir plz make video on home automation

[@Stefano91ste]

Hi, thanks you! At the moment I have nothing on home automation, but in the future I'd like to do something.

[@bogdanmitu7624]

Mine*

[@ongkisuhendar]

hadir nyimak ah

[@davidenet]

like 389 i miei complimenti canale interessantissimo

[@Stefano91ste]

Grazie mille Davide :)

[@TuNguyen-hz5du]

Hello Nice video And Where can I buy this Board? Plz

[@Tera_Hai]

Look in the description of the video. There are files you up load of jlcpcb and buy from them. He showed how in the first part of the video.

[@TuNguyen-hz5du]

@@Tera_Hai thanks friend!

[@Stefano91ste]

Thanks H. Fox

[@ingussilins6330]

Insert this device in toilet flush tank and add min, max level alarm, leak alarm...

[@Stefano91ste]

It's a good idea

[@carlob8766]

Cool led meter !

[@td_44]

Гониво, так подключать нельзя

[@LuckyKumar-xy6mj]

Nice video

[@Stefano91ste]

Thank you!

[@alfblack2]

nice

[@faisalahmed4331]

What type of transistor you used? Pnp or npn?

[@Stefano91ste]

I have used BC337 NPN transistors

[@faisalahmed4331]

@@Stefano91ste i have used same as your board with npn transistors but board didnt power up.

[@Stefano91ste]

Does the pwr led turn on?

[@faisalahmed4331]

@@Stefano91ste no. I checked all component separately all ok. Pwr source ok but no power led light up.

[@Stefano91ste]

This is very strange, the pwr led must always turn on, even without transistors .. try to check that you have correctly connected the power supply, it must be 5V DC

[@mrvann8914]

Hello, if i use it in 10000L water tank, can it process? Thanks

[@DamianoRagozzino]

It works with everything if you apply correctly the electrodes

[@Stefano91ste]

In theory yes, but I have no way of trying

[@SRONIN-ux6jo]

I love the iron man theme

[@clist9406]

Useful information, subscribed

[@VladimerTurnaev]

ииии

[@firoalhadi9010]

Gak nyetrum air nya tuh

[@jaxta86]

Most ibc are see thru anyways

[@Stefano91ste]

ibc?

[@jaxta86]

@@Stefano91ste ibc tote?

[@Stefano91ste]

@@jaxta86 I don't understand what you wanted to ask me in the comment

[@jaxta86]

@@Stefano91ste just saying most containers see thru. What you need a water level for?

[@lghanshika]

Thanksss

[@mamalek1659]

এইভাবে কেউ শিখতে পারে?

[@Stefano91ste]

English please

[@MOUNIR5155]

After a week you will suffer from the oxidation of wires in the water and stop

[@Stefano91ste]

Actually no, the circuit is powered at 5V and the current flowing in the water is much lower than 0.01A .. moreover in water it is possible to put electrodes in stainless steel or gold plated.

[@MOUNIR5155]

@@Stefano91ste I made the idea and was disrupted by the lime in the wire. The water is very salty. Do you have a solution? The current is 5v 0.2a

[@Stefano91ste]

Salt water is perhaps too conductive.. you could try putting a resistor on each wire of each step (25%.. 50% etc.).. But now I do not know tell you what value

[@MOUNIR5155]

@@Stefano91ste ok thnks

[@MOUNIR5155]

How long does it take the wire to stop working?