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cagurtay

MSP430G2 Launchpad LCD Problem

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Hello,

I am trying to interface my MSP430G2553 launchpad with an  LCD (http://www.winstar.com.tw/UserFiles/ProductImages/12523136510757108108.jpg) but my characters look weird. I am using http://www.fibidi.com/arduino-lcd-16x2-characters/ with one potentiometer , with changing ports like this: 

  

    


#include <LiquidCrystal.h>


    // initialize the library with the numbers of the interface pins
    //LiquidCrystal lcd(8,9,4,5,6,7);
    LiquidCrystal lcd(P2_4,P2_5,P2_0,P2_1,P2_2,P2_3); 


    void setup() {
    lcd.begin(16,2);


    lcd.setCursor(0,0);
    lcd.print("Hello World!");
    }


    void loop() {
    }

But my characters looks like this with 3.6V to LCD:

 

ifduB.jpg

NZP3Q.jpg

 

And if I use 5V from TP3 TP1 from Launchpad USB thing with highest brightness:

 

wDIrz.jpg

 

I tried:

 

 1. using other ports (1.0 to 1.7)

 2. changing potentiometer

 3. changing and checking breadboard

 4. checking voltages 3.6v -> 3.5 and 5V -> 5.09V

 5. not using backlight

 6. wiring empty LCD pins to ground

 7. removing lcd.setCursor(0,0); line

 8. trying MSP430G2452

 

But still same. I alson can't use right half of the screen.

 

It should work but, is something wrong with LCD (that was my first soldering attempt I may overheat something but I checked for short circuits and there isn't any) or my chosen ports. 

 

Any ideas?

 

Thank you.

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That looks like a faulty LCD module. Try pushing on the metal surround and see if any of the missing bits appear. I've had a couple of the cheap LCD panels that needed some of the metal tabs bent a little so they held the surround a bit tighter. 

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