i just started playing around with components.
Im following this guide to use my LCD with an Arduino UNO: http://www.dreamdealer.nl/tutorials/connecting_a_1602a_lcd_display_and_a_light_sensor_to_arduino_uno.html
To the point where i wired the LCD and got the backlight on everything seems ok.
After i wired the potentiometer as shown(mine is 50K), trying to operate it doesn’t result in any change on the screen, i dont see any of those black square.
I did search in google without luck- I tried through code to change the contrast with analogWrite as shown here: http://engineeringlearning.blogspot.fi/2013/10/interfacing-lcd-without-potentiometer.html but no change.
Can it be that something is wrong with the LCD?
Any suggestion is appreciaated.