Step 1: Assemble the Circuit
Step 2: Open the Arduino IDE and Set Up the Code
Step 3: Upload the Code to the Arduino Board
Step 4: Monitor Serial Output and Determine Calibration Points
Step 5: Calibrate the Sensor
Step 6: Upload the Updated Code and Test

Published August 3, 2023 © GPL3+

Fix Water Level Sensor Accuracy NOW!

Achieve Perfect Accuracy for Your Water Tank.

IntermediateFull instructions provided30 minutes235

Things used in this project

Hardware components

Arduino UNO

Jumper wires (generic)

water sensor

Software apps and online services

Arduino IDE

Hand tools and fabrication machines

water glass

Story

Watch the video to understand better

Step 1: Assemble the Circuit

Start by connecting your Arduino board to the computer using the USB cable. Then, create the circuit by following these steps:

Connect the VCC pin of the water sensor to the 5V pin on the Arduino board.

Connect the GND pin of the water sensor to the GND pin on the Arduino board.

Connect the signal pin of the water sensor to one of the analog input pins on the Arduino board (e.g., A0). Use a jumper wire for each connection and the breadboard to make the connections easier.

Step 2: Open the Arduino IDE and Set Up the Code

Launch the Arduino IDE on your computer. If you haven't installed it yet, download it from the official Arduino website (https://www.arduino.cc/en/software) and follow the installation instructions.

In the Arduino IDE, Go to Examples, then Analog, then select AnalogInOut Serial Code. Select the Arduino Uno from Board and then select the COM Port.

Upload the AnalogInOutSerial code from code section.

Step 3: Upload the Code to the Arduino Board

Connect your Arduino board to the computer if you haven't already. Then, select the appropriate board and port from the "Tools" menu in the Arduino IDE. Finally, click on the "Upload" button (right-facing arrow) to upload the code to your Arduino board.

Step 4: Monitor Serial Output and Determine Calibration Points

Once the code is uploaded successfully, open the Serial Monitor by clicking on the magnifying glass icon or navigating to "Tools" > "Serial Monitor" in the Arduino IDE. Set the baud rate to 9600 (same as in the code).

Immerse the water sensor in a container filled with water, ensuring that the sensor is completely submerged. Observe the values printed in the Serial Monitor. Note down the analog readings.

You will see that Analog Reading starts from 0 and ends till 700. As shown on Serial Monitor.

Step 5: Calibrate the Sensor

Now that you have gathered the calibration data, it's time to calibrate the sensor in the code.

I have calibrated my Water sensor and code is in code section:

Step 6: Upload the Updated Code and Test

Upload the modified code to the Arduino board once again. Open the Serial Monitor and observe the readings. The water level should now be displayed accurately.

Visit my Website for more projects :

www.electronicsisfun08.in

/*
  Analog input, analog output, serial output

  Reads an analog input pin, maps the result to a range from 0 to 255 and uses
  the result to set the pulse width modulation (PWM) of an output pin.
  Also prints the results to the Serial Monitor.

  The circuit:
  - potentiometer connected to analog pin 0.
    Center pin of the potentiometer goes to the analog pin.
    side pins of the potentiometer go to +5V and ground
  - LED connected from digital pin 9 to ground through 220 ohm resistor

  created 29 Dec. 2008
  modified 9 Apr 2012
  by Tom Igoe

  This example code is in the public domain.

  https://www.arduino.cc/en/Tutorial/BuiltInExamples/AnalogInOutSerial
*/

// These constants won't change. They're used to give names to the pins used:
const int analogInPin = A0;  // Analog input pin that the potentiometer is attached to
const int analogOutPin = 9; // Analog output pin that the LED is attached to

int sensorValue = 0;        // value read from the pot
int outputValue = 0;        // value output to the PWM (analog out)

void setup() {
  // initialize serial communications at 9600 bps:
  Serial.begin(9600);
}

void loop() {
  // read the analog in value:
  sensorValue = analogRead(analogInPin);
  // map it to the range of the analog out:
  outputValue = map(sensorValue, 0, 1023, 0, 255);
  // change the analog out value:
  analogWrite(analogOutPin, outputValue);

  // print the results to the Serial Monitor:
  Serial.print("sensor = ");
  Serial.print(sensorValue);
  Serial.print("\t output = ");
  Serial.println(outputValue);

  // wait 2 milliseconds before the next loop for the analog-to-digital
  // converter to settle after the last reading:
  delay(2);
}

// https://www.youtube.com/channel/UCaXI2PcsTlH5g0et67kdD6g  //
// Updated code for Tank water level Monitoring //
// By MOHD SOHAIL //

int sensorval = 0;  // holds the value
int sensorpin = A0; // sensor pin used  

void setup() { 
  
  Serial.begin(9600);
  pinMode(sensorpin, INPUT);
} 

void loop() { 
  sensorval = analogRead(sensorpin);
  
  if (sensorval<=200)
  { 
      Serial.println("Water Level: Empty"); 
    }

    else if (sensorval>=200 && sensorval<=450)
    {
      Serial.println("Water Level: Low"); 
      }

      else if (sensorval>=450 && sensorval<=620)
      {
        Serial.println("Water Level: Medium");
        }
        else if (sensorval>620)

        {
        Serial.println("Water Level: High"); 
        } 
       delay(1000);
        }

Credits

Mohd Sohail

10 projects • 4 followers

I'm a Robotics Engineer and Freelancer

Fix Water Level Sensor Accuracy NOW!

Things used in this project

Hardware components

Software apps and online services

Hand tools and fabrication machines

Story

Step 1: Assemble the Circuit

Step 2: Open the Arduino IDE and Set Up the Code

Step 3: Upload the Code to the Arduino Board

Step 4: Monitor Serial Output and Determine Calibration Points

Step 5: Calibrate the Sensor

Step 6: Upload the Updated Code and Test

Code

Analog In Out Serial

Updated Code

Credits

Mohd Sohail

Comments

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Fix Water Level Sensor Accuracy NOW!

Fix Water Level Sensor Accuracy NOW!

Things used in this project

Hardware components

Software apps and online services

Hand tools and fabrication machines

Story

Step 1: Assemble the Circuit

Step 2: Open the Arduino IDE and Set Up the Code

Step 3: Upload the Code to the Arduino Board

Step 4: Monitor Serial Output and Determine Calibration Points

Step 5: Calibrate the Sensor

Step 6: Upload the Updated Code and Test

Code

Analog In Out Serial

Updated Code

Credits

Mohd Sohail

Comments

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