Published January 14, 2021

Water Flow Controller

In this activity, we will be reading and displaying the water flow meter on blynk using NodeMCU and also control the tap with the solenoid.

AdvancedFull instructions provided5 hours547

Things used in this project

Hardware components

Flow Sensor, Analog Output

Solenoid Valve, 2 Way

SparkFun Qwiic Single Relay

Jumper wires (generic)

12 v adapter

Female DC Power Plug

Plastic Enclosure, Project Box

USB-A to Mini-USB Cable

NodeMCU ESP8266 Breakout Board

Raspberry Pi 2 Model B

Breadboard (generic)

Heat Shrink Tube

Software apps and online services

Arduino IDE

Blynk

Hand tools and fabrication machines

Soldering iron (generic)

Solder Wire, Lead Free

Story

Importance of the project :

One amongst the foremost essential substances on earth is water. To live, each flora and fauna has to be compelled to have water. There would be no life on earth if there was no water. Besides beverage for survival, folks have more alternative desires exploitation water.There is a tremendous water provides to supply electricity on a broad and divisions of the economy. There are even quite seventy percent of the water in our bodies. In an addition to saving money on your utility bill, conservation helps stop pollution in close to lakes, rivers and native watersheds. Conserving water in addition prevents greenhouse emissions associated with treating and distributing water. Preserving water will even extend the period of your septic system by reducing soil saturation and reducing pollution due to leaks. Overloading municipal sewer systems will even cause untreated waste to flow to lakes and rivers. The smaller the number of water flowing through these systems, the lower the probability of pollution. In some communities, costly installation growth has been avoided by community-wide home conservation.

About the project :

This device is specially designed for shower .The device is about calculating the usage of water in a form of a graph, This can give an idea of the water, the user is using every day in a commonly used water supply. I am using Blynk to monitor the device ( notification, live flow, graph ). This is for the parents to control the usage of water because kids are not aware of water conservation.

Creating Blynk server on raspberry pi :

Install java 8:

sudo apt install openjdk-8-jdk openjdk-8-jre

Download Blynk server jar file (or manually copy it to Raspberry Pi via ssh and scp command):

wget "https://github.com/blynkkk/blynk-server/releases/download/v0.41.13/server-0.41.13-java8.jar"

Run the server on default 'hardware port 8080' and default 'application port 9443' (SSL port):

java -jar server-0.41.13-java8.jar -dataFolder /home/pi/Blynk

Output :

Blynk Server successfully started.
  All server output is stored in current folder in 'logs/blynk.log' file.

Download Arduino IDE and add NodeMCU Board :

Go to the Arduino website : https://www.arduino.cc

Open Arduino IDE
Go to files and click on the preference in the Arduino IDE

http://arduino.esp8266.com/stable/package_esp8266com_index.json

paste the above link on the Additional boards Manager and click ok

After completing the above steps, go to Tools and board, and then select board Manager
Navigate to esp8266 by esp8266 community and install the software for Arduino.

Now Nodemcu board is add to Arduino IDE

How to add the Blynk library :

Install Blynk Library using built-in library manager in Arduino IDE.Search for Blynk library and in the version selection, choose the latest version to date.

Then use the code and circuit given below to make your own water flow controller.

Blynk App :

Download the Blynk App on your smartphone or tablet from App Store or Google Play
Create a Blynk account or login to the existing account.Specify custom server path in your application.

QR Code :

End result :

Notification

Code

Code for water flow controller

#define BLYNK_PRINT Serial           // Uncomment for debugging 

#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>

#include <ESP8266mDNS.h>  
#include <WiFiUdp.h>  
#include <ArduinoOTA.h>  


char auth[] = "Enter your Token";


char ssid[] = "wifi name ";
char pass[] = "wifi password ";


SimpleTimer timer;
WidgetTerminal terminal(V2);
WidgetLCD lcd(V7);
bool simulation = false;     

byte sensorInterrupt = 4;  
byte sensorPin       = 4;  
byte pumpInterrupt   = 5; 
byte pumpPin         = 5; 


float calibrationFactor = 4.5;
volatile byte pulseCount;  
float flowRate;
unsigned int flowMilliLitres;
unsigned long totalMilliLitres;
unsigned long oldTime;

#define averageperiod 5         
int countseconds = 0;           
int averageflow = 0;            
bool notificationsent = false;  
bool pumpState = false;         
bool masterState = false;       
bool flowoffprintonce = false;  
int rowIndex = 0;                
String currentDate  ;
String daybefore;

int menu=0;
int s;



void ICACHE_RAM_ATTR MyInterruptHandler();

void setup()
{

  Serial.begin(115200);
  Serial.println();
 pinMode(sensorPin, INPUT);
 digitalWrite(sensorPin, HIGH);
  pinMode(pumpPin, OUTPUT);
  digitalWrite(pumpPin, LOW);  /



 Blynk.virtualWrite(V10,"clr");
   timer.setInterval(1000L,table);


  
 pinMode(TRIGGER, OUTPUT);
  pinMode(ECHO, INPUT);
  flowMilliLitres   = 0;
  totalMilliLitres  = 0;
  oldTime           = 0;
  flowRate          = 0.0;
  if(simulation == true){
    pulseCount        = 47;
  }
  else{
    pulseCount        = 0;
  }

  
  attachInterrupt(sensorInterrupt, pulseCounter, FALLING);

  
  attachInterrupt(pumpInterrupt, pumpToggle, CHANGE);
  //Blynk.begin(auth, ssid, pass);FOR WITH OUT SERVER 
  Blynk.begin(auth, ssid, pass, IPAddress("YOUR IPADRESS"), 8080);

  terminal.println("Connected to Blynk");
  terminal.println(WiFi.localIP());
  terminal.flush(); 
  timer.setInterval(1000L, showFlow);
  timer.setInterval(100L, pumpControl); 
}
BLYNK_CONNECTED() {
Blynk.syncVirtual(V5);
Blynk.syncVirtual(V4);
}
void showFlow()  {
    detachInterrupt(sensorInterrupt);  
    flowRate = ((1000.0 / (millis() - oldTime)) * pulseCount) / calibrationFactor;
    oldTime = millis();
    flowMilliLitres = (flowRate / 60) * 1000;
    totalMilliLitres += flowMilliLitres;
    
    
    Serial.print("Flow rate: ");
    Serial.print(int(flowRate));  
    Serial.print("L/min");
    Serial.print("\t");          
    Serial.print("Output Liquid Quantity: ");        
    Serial.print(totalMilliLitres);
    Serial.print("mL"); 
    Serial.print("\t");      
    Serial.print(totalMilliLitres/1000);
    Serial.println("L");
    if(simulation != true){  
      pulseCount = 0; 
    }
    countseconds++;
    if(countseconds > 0){    
      averageflow = averageflow + flowRate;  
    }
    if(countseconds == averageperiod){
      Serial.print("Average water flow in litres / M is ");
      Serial.println(averageflow / averageperiod);
      Blynk.virtualWrite(V0, int(averageflow) / averageperiod);
      Blynk.virtualWrite(V1, totalMilliLitres/1000);
      countseconds = 0;  
      chkFlow();           
      averageflow = 0;    
    }
    attachInterrupt(sensorInterrupt, pulseCounter, FALLING);  
    }

void chkFlow(){
  if((averageflow > 3) && (notificationsent == false)){  
    Serial.println("Water IS flowing.");
    lcd.clear();
    lcd.print(0,0,"Water is flowing");
    Blynk.email("Water Flow Sensor", "Water IS flowing.");
    Blynk.notify("Sensor: Water IS flowing.");
    notificationsent = true;         
    flowoffprintonce = false;       
    
  }
  if((averageflow <= 3)&& (flowoffprintonce == false)){
    Serial.println("Water is NOT flowing.");
    lcd.clear();
    lcd.print(1,0,"Water is NOT");
    lcd.print(4,1,"flowing");
    notificationsent = false;  
    flowoffprintonce = true;      
    s=0;
  }
 if(totalMilliLitres/1000 <= 50){
     digitalWrite(pumpPin, HIGH);   
   }
if(totalMilliLitres/1000 >50 && menu == 1){
    digitalWrite(pumpPin, LOW);   
    Blynk.virtualWrite(V8, "OFF");
    Blynk.virtualWrite(V4, 0);     
   }


if(totalMilliLitres/1000 <= 50){
     digitalWrite(pumpPin, HIGH);   
   }
if(totalMilliLitres/1000 >50 && menu == 0){
  Blynk.email("Water Flow Sensor", "Over water usage pl turn off the tap");
 Blynk.notify("Sensor: Over water usage pl turn off the tap and also do reset ");   
    
   }


}
void pulseCounter()
{
  pulseCount++;  
}

void pumpToggle(){               
  pumpState = !pumpState;         
  Serial.println(pumpState);      
}

void pumpControl()               
{
  detachInterrupt(pumpInterrupt);  
  if(pumpState == masterState){
    
  }
  else{  
    masterState = pumpState;
    if(pumpState == true){
    Blynk.virtualWrite(V4, 1);
    Blynk.virtualWrite(V8, "ON");
   
    Serial.println("Pump turned ON"); 
    }
    else{
      Blynk.virtualWrite(V4, 0);
      Blynk.virtualWrite(V8, "OFF");
   
      Serial.println("Pump turned OFF"); 
    }
  }
  terminal.flush();
  attachInterrupt(pumpInterrupt, pumpToggle, CHANGE);   
}

void table()                  
{
  
    Blynk.virtualWrite(V10, "add", rowIndex,"totalMilliLitres"," liters"); 
    Blynk.virtualWrite(V10, "pick", rowIndex);
    Blynk.virtualWrite(V1, 0);
    Serial.println("working");
    rowIndex++;
    }

  
BLYNK_WRITE(V3){   // reset button
  int resetdata = param.asInt();
  if(resetdata == 1){
    Serial.println("Clearing data");
    Blynk.virtualWrite(V0, 0);
    Blynk.virtualWrite(V1, 0);
    averageflow = 0;
    countseconds = 0;
    flowMilliLitres = 0;
    totalMilliLitres = 0;
  }
}
BLYNK_WRITE(V20){   
  int resetdata = param.asInt();
  if(resetdata == 1){
    Serial.println("Clearing table data");
    Blynk.virtualWrite(V10, "clr");
   
  }
}
BLYNK_WRITE(V4){   
  int controlRelay = param.asInt();
  if(controlRelay == 1){
    digitalWrite(pumpPin, HIGH);  
    Blynk.virtualWrite(V8, "OFF"); 
  }
  else{
    digitalWrite(pumpPin, LOW);  
     Blynk.virtualWrite(V8, "ON"); 
  }
  pumpControl();
}
BLYNK_WRITE(V5)
{
 switch(param.asInt()){
  case 1:{
     lcd.clear();
    lcd.print(1,0,"Automatic Mode");
    lcd.print(5,1,"Selected");
    menu=1;
  

    
    break;
  }
  case 2:{
    lcd.clear();
    lcd.print(3,0,"Manual Mode");
    lcd.print(5,1,"Selected");
    menu=0;
    

    break;
  }
 }
}
void loop(){
  Blynk.run();
  timer.run();
}

Credits

Oveya Kiruba

0 projects • 0 followers

Thanks to saurabh47.

Water Flow Controller

Things used in this project

Hardware components

Software apps and online services

Hand tools and fabrication machines

Story

Importance of the project :

About the project :

Creating Blynk server on raspberry pi :

Download Arduino IDE and add NodeMCU Board :

How to add the Blynk library :

Blynk App :

QR Code :

End result :

Schematics

Circuit

Code

Code for water flow controller

Credits

Oveya Kiruba

Comments

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Water Flow Controller

Water Flow Controller

Things used in this project

Hardware components

Software apps and online services

Hand tools and fabrication machines

Story

Importance of the project :

About the project :

Creating Blynk server on raspberry pi :

Download Arduino IDE and add NodeMCU Board :

How to add the Blynk library :

Blynk App :

QR Code :

End result :

Schematics

Circuit

Code

Code for water flow controller

Credits

Oveya Kiruba

Comments

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