Intelligent water flowmeter sensor project with ESP32 code example

Example: Intelligent water flow sensor with ESP32

#include <ESP8266WiFi.h> //Library can be download below
#include <WiFiClient.h> //Library can be downloaded below
#include <ESP8266WebServer.h> //Library can be downloaded below
#include <PubSubClient.h> 
 
int sensorPin1 = 5;
 
//int flowPin2 = 4;
//int flowPin3 = 3;
//int flowPin4 = 2;
 
unsigned long flow1count = 0;
unsigned long flow2count = 0;
 
#define countof(a) (sizeof(a) / sizeof(a[0]))
 
/* Connecting to existing wifi AP Network */
 
//char ssid[] = "14CORE";  //  your network SSID (name)
//char password[] = "we do what we must, because we can";       // your network password
 
/* Make you own stand alone wifi networ accesspoint*/
const char* ssid     = "14CORE";
const char* password = "1234567890";
 
// Set your IP address for your suitable for your network IP/SEGMENT
 
IPAddress server(192, 168, 4, 100);
 
PubSubClient client(server);
String webString = "14CORE | Water Flow Sensor with ESP8266";   // String to display
 
// Callback function
 
void callback(const MQTT::Publish& pub) {
  if(pub.payload_string().equals("flow1"))
  {
    webString = "Flow 2: " + String(flow1count/450.0) + " L"; // Arduino has a hard time with float to string
    client.publish("outTopic",webString);
  } else if(pub.payload_string().equals("flow2"))
  {
    webString = "Flow 2: " + String(flow2count/450.0) + " L";
    client.publish("outTopic",webString);               // send to someones browser when asked
 
      } else
 
Serial.print("14CORE | Flow Sensor ")	  
Serial.print("Flow 1 in Liters: ");
Serial.print(flow1count/450.0);
Serial.print("\tFlow 2 in Liters: ");
Serial.print(flow2count/450.0);
Serial.print("\tFlow 1 in pulses: ");
Serial.print(flow1count);
Serial.print("\tFlow 2 in pulse: ");
Serial.println(flow2count);
delay(500);
      
  {
  }
  Serial.print(pub.topic());
  Serial.print(" => ");
  Serial.println(pub.payload_string());
}
void setup()
{
 
Serial.begin(115200);
pinMode(sensorPin1, INPUT_PULLUP);
attachInterrupt(sensorPin1, flow1, CHANGE);
pinMode(flowPin2, INPUT_PULLUP);
attachInterrupt(flowPin2, flow2, CHANGE);
client.set_callback(callback);
  
  // Connect to existing wifi network
  
  WiFi.begin(ssid, password);
  Serial.print("\n\r \n\rWorking to connect");
 
  // Wait 5mili for connection
  
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
	Serial.print("Connecting ")
    Serial.print(".");
  }
  
  Serial.println("");
  Serial.print
  Serial.println("14CORE | ESP8266 Server");
  Serial.print("Connected to ");
  Serial.println(ssid);
  Serial.print("IP address: ");
  Serial.println(WiFi.localIP());
    
  if (client.connect("14CORE | ESP8266 Liquid Flow Sensor")) {
    client.publish("outTopic","flow boot up");
    client.subscribe("inTopic");
  }
}
 
void loop()
{
  client.loop();
}
 
void flow1()
{
flow1count +=1;
}
 
void flow2()
{
flow2count +=1;
}