Hello!
I'm using a classic display Hitachi HD44780 driver compatible.
I change the RS and the E pin to 7 and 6 and this is my code.
#include <LiquidCrystal.h>
// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(7, 6, 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("mind");
}
void loop() {
lcd.setCursor(0, 1);
lcd.print(millis()/1000);
delay(10);
}
The display returns to me two lines (2x16) of black boxes as arduino doesn't write any to the LCD.
I had checked the solders and the pins with the official tutorial (http://arduino.cc/en/Tutorial/LiquidCrystal) and i didn't find any changes.
Now, i've googled for LCD trouble with black boxes and i saw that the most common issues is one line of black boxes, but nothing about two lines black.
Can anyone help me?
Thank you.16