LCD trouble after reading existing threads, PLEASE HELP!!!

hey all,

thanks in advance taking time me out,
i'm new ardunio, , have come against brick wall lcd display, know there lots of threads troubleshooting having read many of them i'm still reeolve issues,

problem:
the screen wont show top line of black boxes, when playing various config, managed random symbols , 2 lines of black boxes cant remember changed make happen.
additionally, have wired second lcd (same model) , experienced exact same problems i'm ruling out dodgy lcd, i've swapped around bunch see if helps, , checked shorts across soldered joints , triple checked none of wires have breaks.
cheers guys (and girls (maybe))

my setup:
ardunio demuemilanove
lcd = rt1602h data sheet  available http://www.pdfsea.com/down/2008/0710/7192.html
pictures can found: https://picasaweb.google.com/101933256262609935815/lcdtroubles

connections
1. vdd - 5v
2. vss - gnd
3. v0 - wipe pin 10k pot
4. rs - digital in 12
5. r/w - gnd
6. e - digital in 11
7.
8.
9.
10.
11. db4 = digital in 5
11. db5 = digital in 4
11. db6 = digital in 3
11. db7 = digital in 2

code used (example tom igoe, cheers tomo):

// include library code:
#include <liquidcrystal.h>

// initialize library numbers of interface pins
liquidcrystal lcd(12, 11, 5,4,3,2);


void setup() {
 // set lcd's number of columns , rows:
 lcd.begin(16, 2);
  // print message lcd.
 lcd.print("hello, world!");
}

void loop() {
 // turn off blinking cursor:
 lcd.noblink();
 delay(1000);
  // turn on blinking cursor:
 lcd.blink();
 delay(1000);
}

cheers
josh

is power , ground right way round? pin 1 & 2, on ( not ) pin 1 gnd , pin 2 +vcc

Arduino Forum > Using Arduino > Displays > LCD trouble after reading existing threads, PLEASE HELP!!!

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