Flow sensor photoelectric sensor.
Water flow sensor circuit diagram.
A round shaped magnet is embedded at the center of the turbine and the hall effect sensor is sealed and protected from moisture and placed above the magnet.
Arduino water flow sensor working.
A water system flow diagram provides a schematic simplified representation of your facility s water distribution system from the water meter or point of entry to the facility to points of use.
The sensor has a magnet and hall effect sensor.
I used a breadboard and once the connection was done as per the circuit diagram shown above my testing set uplooked something like this.
The circuit diagram for arduino water flow sensor interface is shown in the image below.
Hence i have not used any external pull up resistors.
Flow diagrams are examples of concept diagrams used in many types of risk assessment to assist in identifying and understanding hazards particularly exposures to hazards hazard sources.
If you are new to arduino and lcds you can consider reading this interfacing arduino and lcd article.
As clearly indicated in the circuit diagram two closely spaced metal rings are used as the water sensor mechanism.
If we take a look at the sides of the water flow sensor we can witness a plastic turbine in the path of water flow.
If the output valve of the pipe is closed the output of the water flow sensor is zero no pulses.
However one can use two metal needles injection needles to make the sensor.
Water switch circuit schematic.
Internally the output pin of the hall effect sensor is pulled high on the circuit board itself as you can see in the breakdown image show above.