Fig1 in this circuit an ultrasonic sensor is connected to pin d9 and d10 pin of arduino.
Water sensor circuit diagram.
Flow sensor photoelectric sensor.
The circuit produces the sound when the sensor senses a drop of a water leak.
In this circuit this circuit uses a liquid level sensor to measure the level of water in the water tank.
Transmitter circuit transmitter circuit is shown in the figure below.
If you are new to arduino and lcds you can consider reading this interfacing arduino and lcd article.
Ultrasonic sensor is powered by vcc and gnd pin these pins are connected to vcc and gnd pin of the arduino.
In this project two circuits are used.
Connecting a water sensor to an arduino is a great way to detect a leak spill flood rain etc.
Water switch circuit schematic.
Arduino water level indicator circuit.
The following circuit shows the water level circuit diagram.
However one can use two metal needles injection needles to make the sensor.
Arrange the components as shown in the picture.
Connect the pin 7 4 and 2 of uln 2003 ic to create three different levels in the water container.
Water sensor brick is designed for water detection which can be widely used in sensing rainfall water level and even liquid leakage.
As clearly indicated in the circuit diagram two closely spaced metal rings are used as the water sensor mechanism.
The pic below shows you the pinout of the water flow sensor.
It can be used to detect the presence the level the volume and or the absence of water.
Water level alarm circuit using level sensor.