how to interface 16*2 lcd display with arduino uno

[rupa]

iam using arduino uno and JHD 162A lcd display board

iam just trying to display hello world 

and my program is 

#include <LiquidCrystal.h>

 

// initialize the library with the numbers of the interface pins

LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

 

void setup() {

  // set up the LCD's number of columns and rows:

  lcd.begin(16, 2);

  // Print a message to the LCD.

  lcd.print("hello, world!");

}

 

void loop() {

  // set the cursor to column 0, line 1

  // (note: line 1 is the second row, since counting begins with 0):

  lcd.setCursor(0, 1);

  // print the number of seconds since reset:

  lcd.print(millis() / 1000);

}

 

but my lcd is not displaying anything 

PLZ CAN ANY ONE HELP ME WITH THIS 

[rupa]

u just need a variable resistor of 10K which need to be connnected arduino

[Ashutosh Bhatt]

can you vary the brightness of LCD? have you connected the pot with LCD?

[rupa]

if u dont need brightness dont connect 15 and 16 pins

if u want to vaey the brightness to a 100k variable resistor and using it will vary the brightness for sure

thank you

[rupa]

if u dont need brightness dont connect 15 and 16 pins

if u want to vaey the brightness to a 100k variable resistor and using it will vary the brightness for sure

thank you

[Author]

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