LCD screen displays top row of filled squares

The LCD and Keypad Shield gives you a handy 16-character by 2-line display, 5 buttons and a controllable backlight.
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bengearon
Posts: 3
Joined: Thu Oct 18, 2012 12:57 am

LCD screen displays top row of filled squares

Post by bengearon » Thu Oct 18, 2012 1:06 am

Hi,

we have just purchased a new LCD screen, when we plug it in to either of our boards, Eleven and EtherNet 10 it only displays the top row with filled squares and the bottom is empty. On the quickstart quide it says this is a power problem, but we have tried several options to overcome this including placing the screen on a separate bread board and using a 9v battery and then a 9v power supply, but this makes no difference. Any advice would be appreciated greatly appreciated.

roger
Posts: 1
Joined: Thu Oct 18, 2012 1:41 pm

Re: LCD screen displays top row of filled squares

Post by roger » Thu Oct 18, 2012 1:51 pm

Hi there

the example code is configured for different numbering of the interface pins


See the below code to upload, note the numbers in the brackets after Liquidcrystal lcd (8,9,4,5,6,7)!!
*/

// include the library code:
#include <LiquidCrystal.h>

// initialize the library with the numbers of the interface pins, the below nums are correct to enable the LCD screen to work with (your eleven).
LiquidCrystal lcd(8, 9, 4, 5, 6, 7);

void setup() {
// set up the LCD's number of columns and rows:
lcd.begin(16, 2);
// Print a message to the LCD.
lcd.print("Yes it flashes!");
}

void loop() {
// Turn off the display:
lcd.noDisplay();
delay(500);
// Turn on the display:
lcd.display();
delay(500);
}

bengearon
Posts: 3
Joined: Thu Oct 18, 2012 12:57 am

Re: LCD screen displays top row of filled squares

Post by bengearon » Thu Oct 18, 2012 10:22 pm

Thanks you for that, much appreciated.

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