I've followed Lady Ada tutorial on interfacing with an LCD module, except it doesn't work for me.
I've everything hooked up properly, ad double-checked my connections, and all that happens is that when it writes a new word (noted by the flash of the LED on 13), the top few rows pixels of the LCD flicker a bit.
Here's the example I'm using:
//example use of LCD4Bit library
#include <LCD4Bit.h>
//create object to control an LCD.
//number of lines in display=1
LCD4Bit lcd = LCD4Bit(1);
//some messages to display on the LCD
char msgs[6][15] = {"apple", "banana", "pineapple", "mango", "watermelon", "pear"};
int NUM_MSGS = 6;
void setup() {
pinMode(13, OUTPUT); //we'll use the debug LED to output a heartbeat
lcd.init();
//optionally, now set up our application-specific display settings, overriding whatever the lcd did in lcd.init()
//lcd.commandWrite(0x0F);//cursor on, display on, blink on. (nasty!)
}
void loop() {
digitalWrite(13, HIGH); //light the debug LED
//pick a random message from the array
int pick = random(NUM_MSGS);
char* msg = msgs[pick];
lcd.clear();
lcd.printIn(msg);
delay(1000);
digitalWrite(13, LOW);
//print some dots individually
for (int i=0; i<3; i++){
lcd.print('.');
delay(100);
}
//print something on the display's second line.
//uncomment this if your display HAS two lines!
/*
lcd.cursorTo(2, 0); //line=2, x=0.
lcd.printIn("Score: 6/7");
delay(1000);
*/
//scroll entire display 20 chars to left, delaying 50ms each inc
lcd.leftScroll(20, 50);
}