How to add LCD display with water sensor??

Using Arduino Project Guidance
1

How to add LCD display with water sensor??

2

What's wrong!!

#include <Wire.h> 
#include <LCD.h>
#include <LiquidCrystal_I2C.h>





//-----------------------------------------
//water sensor
int water; 
int led1=7, led2=6, led3=5; // وضع أسماء لأرقام بعض الأرجل
int sensorPin=A0;
//-----------------------------------
int ThermistorPin = 2 ;


//float temp2;
int Vo, LED=13;
//float hum;
float R1 = 10000;
float logR2, R2, T, Tc, Tf;
float c1 = 1.009249522e-03, c2 = 2.378405444e-04, c3 = 2.019202697e-07;
#define I2C_ADDR 0x27
#define BACKLIGHT_PIN 3
#define En_pin 2
#define Rw_pin 1
#define Rs_pin 0
#define D4_pin 4
#define D5_pin 5
#define D6_pin 6
#define D7_pin 7
LiquidCrystal_I2C lcd(I2C_ADDR,En_pin,Rw_pin,Rs_pin,D4_pin,D5_pin,D6_pin,D7_pin);
void setup() {


//------------
//water sensor.

  pinMode(led1,OUTPUT);
  pinMode(led2,OUTPUT);
  pinMode(led3,OUTPUT);
  Serial.begin(9600);
//-------------
  
  dht.begin();
   pinMode(LED,OUTPUT);
Serial.begin(9600);
lcd.begin(16,2);
  lcd.setBacklightPin(BACKLIGHT_PIN,POSITIVE);
  lcd.setBacklight(HIGH);
}

void loop() {
    
  

  Vo = analogRead(ThermistorPin);
  R2 = R1 * (1023.0 / (float)Vo - 1.0);
  logR2 = log(R2);
  T = (1.0 / (c1 + c2*logR2 + c3*logR2*logR2*logR2));
  Tc = T - 273.15;
  Tf = (Tc * 9.0)/ 5.0 + 32.0; 


  
  Serial.print(" %, Temperature: "); 
  
  Serial.print(Tc);
  Serial.println(" C");  
   
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Temp: ");
  lcd.print(Tc);
  lcd.print(" ");
  lcd.print((char)223);
  lcd.print("C");
   
   
  

  delay(500);

  if (Tc>=40)
  {
    digitalWrite(LED,LOW);
  }
  else
  {
     digitalWrite(LED,HIGH);
  }
//---------------------------
//water sensor.

 water=analogRead(sensorPin);
  Serial.println(water);
  
  
  if((water>100) && (water<450))
  {
    digitalWrite(led1,HIGH);
    digitalWrite(led2,LOW);
    digitalWrite(led3,LOW);
    lcd.clear();
  lcd.setCursor(0,1);
  lcd.print("1");
     
  }
  
  else if((water>=500) && (water<650))
  {
    digitalWrite(led2,HIGH);
    digitalWrite(led1,HIGH);
    digitalWrite(led3,LOW);
     lcd.clear();
  lcd.setCursor(0,1);
  lcd.print("2");
  }
  
  else if((water>=700) && (water<900))
  {
    
    digitalWrite(led2,HIGH);
    digitalWrite(led1,HIGH);
    digitalWrite(led3,HIGH);
   
    lcd.clear();
  lcd.setCursor(0,1);
  lcd.print("3");
 
  }
  else
  {
    
    digitalWrite(led2,LOW);
    digitalWrite(led1,LOW);
    digitalWrite(led3,LOW);
    lcd.clear();
  lcd.setCursor(0,1);
  lcd.print("0");
    
  }
  //------------------------------
3

Line 47 dht.begin(); You have not included the library nor constructed a dht object.

Line 146 is missing a } to close the loop() function.

After commenting out line 47 and inserting a } to close loop(), the code compiles. If there is anything else wrong, you will have to explain what is wrong better than "it doesn't work".

4

That's work. :slight_smile:

#include <Wire.h> 
#include <LCD.h>
#include <LiquidCrystal_I2C.h>





//-----------------------------------------
//water sensor
int water; 
int led1=7, led2=6, led3=5;
int sensorPin=A0;
//-----------------------------------
int ThermistorPin = 2 ;



int Vo, LED=3;

float R1 = 10000;
float logR2, R2, T, Tc, Tf;
float c1 = 1.009249522e-03, c2 = 2.378405444e-04, c3 = 2.019202697e-07;
#define I2C_ADDR 0x27
#define BACKLIGHT_PIN 3
#define En_pin 2
#define Rw_pin 1
#define Rs_pin 0
#define D4_pin 4
#define D5_pin 5
#define D6_pin 6
#define D7_pin 7
LiquidCrystal_I2C lcd(I2C_ADDR,En_pin,Rw_pin,Rs_pin,D4_pin,D5_pin,D6_pin,D7_pin);
void setup() {


//------------
//water sensor.

  pinMode(led1,OUTPUT);
  pinMode(led2,OUTPUT);
  pinMode(led3,OUTPUT);
  Serial.begin(9600);
//-------------
  

   pinMode(LED,OUTPUT);
Serial.begin(9600);
lcd.begin(16,2);
  lcd.setBacklightPin(BACKLIGHT_PIN,POSITIVE);
  lcd.setBacklight(HIGH);
}

void loop() {
    
  

  Vo = analogRead(ThermistorPin);
  R2 = R1 * (1023.0 / (float)Vo - 1.0);
  logR2 = log(R2);
  T = (1.0 / (c1 + c2*logR2 + c3*logR2*logR2*logR2));
  Tc = T - 273.15;
  Tf = (Tc * 9.0)/ 5.0 + 32.0; 


  
  Serial.print(" %, Temperature: "); 
  
  Serial.print(Tc);
  Serial.println(" C");  
   
 
   
   
  

  delay(500);

//---------------------------

water=analogRead(sensorPin);
  
  Serial.println(water);

  if (Tc>=40)
  {
    digitalWrite(LED,HIGH);
    delay(50);
    digitalWrite(LED,LOW);
    delay(50);
  }
  else
  {
   
     digitalWrite(LED,LOW);
  }
  
  if((water>100) && (water<450))
  {
    digitalWrite(led1,HIGH);
    digitalWrite(led2,LOW);
    digitalWrite(led3,LOW);
    lcd.clear();
 lcd.setCursor(0,0);
  lcd.print("W.Temp: ");
  lcd.print(Tc);
  lcd.print(" ");
  lcd.print((char)223);
 lcd.print("C");
  lcd.setCursor(0,1);
  lcd.print("LOW water");
  
     
  }
  
  else if((water>=500) && (water<650))
  {
    digitalWrite(led2,HIGH);
    digitalWrite(led1,HIGH);
    digitalWrite(led3,LOW);
     lcd.clear();
 lcd.setCursor(0,0);
  lcd.print("W.Temp: ");
  lcd.print(Tc);
  lcd.print(" ");
  lcd.print((char)223);
 lcd.print("C");
  lcd.setCursor(0,1);
  lcd.print("CENTER water");
 
  }
  
  else if((water>=700) && (water<900))
  {
    
    digitalWrite(led2,HIGH);
    digitalWrite(led1,HIGH);
    digitalWrite(led3,HIGH);
   
   lcd.clear();
 lcd.setCursor(0,0);
  lcd.print("W.Temp: ");
  lcd.print(Tc);
  lcd.print(" ");
  lcd.print((char)223);
 lcd.print("C");
  lcd.setCursor(0,1);
  lcd.print("FUL water");
  
 
  }
  else
  {
    
    digitalWrite(led2,LOW);
    digitalWrite(led1,LOW);
    digitalWrite(led3,LOW);
   lcd.clear();
 lcd.setCursor(0,0);
  lcd.print("W.Temp: ");
  lcd.print(Tc);
  lcd.print(" ");
  lcd.print((char)223);
 lcd.print("C");
  lcd.setCursor(0,1);
  lcd.print("NO water");
    
  }

  



  
}