16x2 LCD only displaying 80 characters. Is there a limit?

hi, i'm trying make twitter reader 16x2 lcd seems displaying 80 characters.  there limit?  code below doing text scroll gets cut off @ 80th character.  i'm not sure if makes difference have i2c backpack on lcd , it's version 1 displayed here: https://arduino-info.wikispaces.com/lcd-blue-i2c

code: [select]


#include <wire.h>
#include <lcd.h>
#include <liquidcrystal_i2c.h> // f malpartida's newliquidcrystal library
#define i2c_addr 0x3f // define i2c address controller
#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
#define backlight 3

liquidcrystal_i2c lcd(i2c_addr,en_pin,rw_pin,rs_pin,d4_pin,d5_pin,d6_pin,d7_pin);

void setup() {
lcd.begin (16,1); // initialize lcd

// switch on backlight
lcd.setbacklightpin(backlight,positive);
lcd.setbacklight(high);

// reset display
lcd.clear();
delay(1000);
lcd.home();

// print on lcd
lcd.backlight();
lcd.setcursor(0,0);
lcd.print("ten million tonnes of fish wasted every year despite declining fish stocks...80");
}

void loop() {
// scroll 20 positions (display length + string length) left
 // move center:
 for (int positioncounter = 0; positioncounter < 16; positioncounter++) {
   // scroll 1 position left:
   lcd.scrolldisplayleft();
   // wait bit:
   delay(125);
   }

  // delay @ end of full loop:
  //delay(2000);
}



the hd44780 controller has got 80 bytes of display ram.   so can't expect store more on 8x2, 16x2, 16x4, 20x4, 40x2 display.

the 40x4 displays have got 2 hd44780 controllers.  behave differently.

quite honestly,  might keep track of lcd.    buffer larger strings in arduino memory.

david.

Arduino Forum > Using Arduino > Displays > 16x2 LCD only displaying 80 characters. Is there a limit?

arduino