LCD Horizontal bargraph like one black rectangle

Projects Programming
10

Try this:

#include <LiquidCrystal.h>    
LiquidCrystal lcd(2, 3, 4, 5, 6, 7); //initialize the library, numbers of the interface pins
int analogInput = 1;     //analog pin A1
float VoltageOut = 0.0;
float VoltageIn = 0.0;
int refresh = 50;     //refresh rate
int value = 0;         //variable to store value

void setup()
{
  pinMode(analogInput, INPUT);  //setting analog pin mode to input
  lcd.begin(16, 2);             //setting up the LCD screens rows and colums
  lcd.print("Voltage=");        
}

void loop()
{
  value = analogRead(analogInput);  //reading the value on A1
  //VoltageOut = (value * 5.0) / 1024.0;
  VoltageIn = (value * 5.0) / 1024.0; 
  //VoltageOut / (R2/(R1+R2));  

  lcd.setCursor(8, 0);              //setting LCD cursor
  lcd.print(VoltageIn);
  lcd.print(" V");
  delay(refresh);                    //screen refresh delay
  voltmetergraph();                //calling my function voltmetergraph 
}

void voltmetergraph()
{ 
  lcd.setCursor(0, 1);
  if (VoltageIn >= 0.28) lcd.write(255); else lcd.print('-');
 
  lcd.setCursor(1, 1);
  if (VoltageIn >= 0.56) lcd.write(255); else lcd.print('-');

  lcd.setCursor(2, 1);
  if (VoltageIn >= 0.83) lcd.write(255); else lcd.print('-');
    
  lcd.setCursor(3, 1);
  if (VoltageIn >= 1.11) lcd.write(255); else lcd.print('-'); 

  lcd.setCursor(4, 1);
  if (VoltageIn >= 1.38) lcd.write(255); else lcd.print('-'); 
   
  lcd.setCursor(5, 1);
  if (VoltageIn >= 1.67) lcd.write(255); else lcd.print('-');
   
  lcd.setCursor(5, 1);
  if (VoltageIn >= 1.94) lcd.write(255); else lcd.print('-');
     
  lcd.setCursor(6, 1);
  if (VoltageIn >= 2.22) lcd.write(255); else lcd.print('-');
    
  lcd.setCursor(7, 1);
  if (VoltageIn >= 2.50) lcd.write(255); else lcd.print('-');
    
  lcd.setCursor(8, 1);
  if (VoltageIn >= 2.78) lcd.write(255); else lcd.print('-');
   
  lcd.setCursor(9, 1);
  if (VoltageIn >= 3.06) lcd.write(255); else lcd.print('-');
    
  lcd.setCursor(10, 1);
  if (VoltageIn >= 3.33) lcd.write(255); else lcd.print('-');
   
  lcd.setCursor(11, 1);
  if (VoltageIn >= 3.61) lcd.write(255); else lcd.print('-');
    
  lcd.setCursor(12, 1);
  if (VoltageIn >= 3.89) lcd.write(255); else lcd.print('-');
    
  lcd.setCursor(13, 1);
  if (VoltageIn >= 4.17) lcd.write(255); else lcd.print('-');
    
  lcd.setCursor(14, 1);
  if (VoltageIn >= 4.44) lcd.write(255); else lcd.print('-');
   
  lcd.setCursor(15, 1);
  if (VoltageIn >= 4.72) lcd.write(255); else lcd.print('-');    
}