Water tank level sensor

Check the water level in your water tank (If you live in a third world country like me) without having to climb to your roof

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I live in a desertic place of the country, so the water is limited, usually we just get 4-5 hours of water daily. People usually have water tanks (called here "tinacos") installed on the roof for storing enough water for the day. The problem is you have to either go up to the roof to check the water level or just guess it if you want to do some water intensive activities (like laundry).

This gives the water level in 25% intervals from 0% to 100% and is conveniently installed inside the house with a cable all the way up to the water tank.
  • 1 × Atmega328 Atmega328P with Arduino Bootloader
  • 6 × 10K resistor 10K resistor
  • 1 × LED Bar 10 level LED bar
  • 6 × Screw terminal 5mm 2 screws terminal
  • 1 × 7805 5V regulator

View all 7 components

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Izabella Linde wrote 05/19/2021 at 13:19 point

Your project is super amazing. To maintain water temperature is essential when you are using tankless water heater. Setting of temperature depends on the inlet water temperature and the temperature you want. To know more about this, read this article.

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janecaris247 wrote 04/06/2021 at 07:31 point

this is great idea I am also working on the very similar project you can see here

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johnvila1337 wrote 01/13/2021 at 23:06 point

Wow! It's an interesting project, You can see here my project

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nodemcu12ecanada wrote 05/28/2020 at 18:18 point

Use non-contact ultrasonic sensor. Display level on a web page on your smartphone.

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rgalvez2009 wrote 09/16/2016 at 19:47 point

Im purchasing an older RV that I plan on geeking up and they sell tank monitors that come with a 2 wire stick to the outside of the tank sensor strips. Check out SeeLevel II. You might be able to use the sensors or whole system. Its only 299 for the system and it can hook up to LP sensor to monitor LP gas tank. The sensors are also very cost effective.

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José Miguel Díaz wrote 07/11/2014 at 04:20 point
It's an interesting project, in my previous job at a research center I met some people working on a similar polymer based sensor for monitoring moisture in great lengths of ground. Seeing the sensor in your link seems like something very similar.

What's your favorite water monitor so far?

I made my project mainly thinking to just solve a problem in my home cheaply, but I do plan on making better versions in the near future

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JLodge wrote 07/10/2014 at 19:10 point
That's a fascinating way of solving your water problems! As you may already know, I too am interested in monitoring my water. One of the many affordable water level sensor that I have searched out for can be found here:

This one interests me, for it supposedly works in any liquid not just water. It also is supposed to give exact measurements as to what the level of the water is.

I would love to hear your thoughts on the various applications of this sensor!

Hope you found this interesting and useful!

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