Water Level Indicator Using Arduino

Water level indicator definition: A water level indicator is a system that relays information back to a control panel to indicate whether a body of water has a high or low water leve

Today we are going to learn about water level indicator using Arduino in the simplest way. This is very beginner level project for electronics and robotics student. Here we are going to explain in simple 5 steps so that even school kids can understand easily.

Let’s get started………

Components Required

Arduino
Bread board
3 LED (RED, GREEN, YELLOW)
Buzzer
Jumper wire
Water level sensor
220 ohm Resistor (3 )

Step 1: Assemble and connect LED on Bread board

• Connect cathode of each 3 LEDs to power rail on breadboard which would be grounded.
• Connect anode to different nodes.
• Connect 220 ohm resistor in series with each LEDs

                   RED – indicate low level of water

                  YELLOW – indicate half water level

                  GREEN – indicate full water level

Step 2: Connection with Arduino

                             Connect pins of LEDs as follows:

                                      RED= Digital pin 13

                                      YELLOW=Digital pin 12

                                      GREEN=Digital pin 11

Step 3: Connection of water sensor

                        Connect water sensor to Arduino as follows:

Water sensor	Arduino pin
-	GND
+	VCC
s	A0

Step 4: Connection of Buzzer

                         

                                   Make connections of Buzzer to digital pin 8 of Arduino

Step 5: Upload the sketch:

Code:

int level;

const int analog_0=0;

int l1=13;

int l2=12;

int l3=11;

int l4=10;

void setup() {

  // put your setup code here, to run once:

  Serial.begin(9600);

  pinMode(l1,OUTPUT);

  pinMode(l2,OUTPUT);

  pinMode(l3,OUTPUT);

  pinMode(l4,OUTPUT);

 pinMode(8,OUTPUT);

}

void loop() {

  

  // put your main code here, to run repeatedly:

level=analogRead(analog_0);

Serial.println(level);

if(level>500&&level<550)

{ digitalWrite(l1, HIGH);

  digitalWrite(l2, LOW);

   digitalWrite(l3, LOW);

    digitalWrite(l4, LOW);

  

  }

else if(level>600&&level<620)

 {

  digitalWrite(l1, LOW);

  digitalWrite(l2, HIGH);

   digitalWrite(l3, LOW);

    digitalWrite(l4, LOW);

  

  }

else if(level>620&&level<630)

 {

  digitalWrite(l1, LOW);

  digitalWrite(l2, LOW);

   digitalWrite(l3, HIGH);

    digitalWrite(l4, LOW);

  

  }

else if(level>630&&level<650)

 {

  digitalWrite(l1, LOW);

  digitalWrite(l2, LOW);

   digitalWrite(l3, LOW);

    digitalWrite(l4, HIGH);

    digitalWrite(8, HIGH);

  }

}

                         If you have any queries, feel free to discuss in comment