Arduino: Are there sensors for counting the amount of water used?

Question

Arduino

I would like to screw the sensor to the pipe and in real time (possible with a delay) see the amount of water used. Is it real? Everything is at the idea stage, I am far from electronics. A programmer, but ready to get involved in the path to a real goal)))
for one parallel similar question on accounting for an electric meter)))

Answer 1

The answer to your question depends on the purpose for which you are going to use these sensors.
If for yourself personally, then aliexpress search for the keywords "Water Flow Sensor Switch Meter Counter Hall Sensor Flowmeter". There are different sensors for "accounting" for water (liquid), the price is from 3 dollars and more.
About electricity. It is impossible to interfere with the electric meter circuit, it is sealed. Google, there are circuits that take readings by reading the "flashing" of the LEDs on the electric meter. If you need it for yourself, then it’s better to purchase a meter and install it at the entrance to your apartment, naturally after the meter of your energy company. Here, connect to your electric meter in any way you like, and get the data you need. Alternatively, you can try using a so-called "current sensor" such as the ACS712. By measuring current and voltage, calculating consumption based on these parameters, etc., you can try to solve your problem. Although, unfortunately, you didn’t write anything specific about what you need to get in the end. Otherwise, you would probably get more specific advice.

Answer 2

On aliexpress, electronic water meters cost from 200 rubles for plastic and from 600 for brass. Connected to the arduino once or twice.