thanks. I did what you say, but i still get nothing in the lcd.
I connected the pins as you said, also de vcc and ground, but the lcd didn't turn on.
I'm using the ug8 library and trying to do the example "Hello world"... I still get nothing and i'm getting angry! ja
thanks for your support!

i have the same problems! I have an arduino mega and also de graphic lcd j12864 and i don't know how to connect them! I downloaded the ug8 library but i think my problem is hardware. I just don't know how to connect the lcd to the arduino.

solucionaste el problema? Yo no logro hacer andar el lcd! tengo el mismo arduino y el mismo lcd ( el j12864)... si llegas a tener alguna solucion compartila por faor! gracias! cualquier novedad mia la publico!