Cytron Technical Forum

what happen with this ? is that my code problem or the lcd shield probem ?
[img][/img]

CODE: SELECT_ALL_CODE

#include <LiquidCrystal.h>

LiquidCrystal lcd(8, 9, 4, 5, 6, 7);

void setup()
{
  Serial.begin( 9600 );
 
  lcd.begin(16, 2);
  lcd.clear();
}

void loop()
{
  lcd.setCursor(0,0);
  lcd.println( "hello world!    ");
  delay(1000);
}

Hi alung92,

I already test your code and it is working. Could you try to adjust the LCD contrast (variable resistor)? If still problem, you can contact the Technical Support by filling up this form (link).

what about like this ? no character ? all black box . the bottom column color darker than upper column. is that normal ?

If you already upload the code successfully to Arduino, it should be a character displayed on the LCD.

But if the LCD still blank, probably the SHIELD-LCD is defect. Please contact the Technical Support by filling up this form (link).

Take that to some experts.