Question

I wrote a code for ADC using analog voltage read and LCD. As follows:-

#include <LiquidCrystal.h>
LiquidCrystal lcd(12, 11, 5, 4, 3, 2); //(RS,en,D4,D5,D6,D7)
int voltpin=A0;
int voltage;
void setup()
{
pinMode(voltpin,INPUT);
lcd.begin(16, 2);

}
void loop()
{
analogRead(voltpin);
lcd.setCursor(0,0);
lcd.print(“Device Active”);
lcd.setCursor(0,2);
if(analogRead(voltpin)>=1)
{
lcd.print(“DETECTED”);
}
if(analogRead(voltpin)<1)
{

lcd.print(“NOT DETECTED”);
}

}

The code works as it should on Proteus but when I am connecting my LCD(JHD162a) in reality to Arduino Uno nothing is being displayed on the display only the backlight is turning on.
Is there something wrong with my code or am i interfacing the lcd wrong ?
LCD connections are as follows:-
Pin 1 - Ground
Pin 2- +5v
Pin 3- Ground
Pin 4- Digital pin 12
Pin 5- Ground
Pin 6- Digital pin 11
D4, D5, D6, D7 to D5, D4, D3, D2 of the arduino respectively.

I adjusted the contrast using resistors and there were changes in contrast but display still remains blank. Also tried making RW pin high as in data sheet but same result.

Compare your wiring with the Proteus schematic.
Then test each jumper wire for continuity.

David.