Starting LCD 20x4

Other Hardware Displays
1

I started with arduino last month, and now i'm trying to make my LCD works, but I had search and didn't find how to connect the LCD 20x4 for the arduino, i just found 16x2, but 20x4 have more pins than 16x2. And I wanna know if I heve to do something diferent or can be the same configuration of the 16x2?

Thanks

2

The 20x4 and the 16x2 have exactly the same pin connections as far as the LCD controller is concerned. There are 14 pins (1-14) for the LCD controller and there may or may not be two more pins (15 and 16) depending on whether the display has an LED backlight. Any program that works for the 16x2 should also work for the 20x4. If you are using the LiquidCrystal library then you could change the lcd.begin() values but it won't make any difference with the current version of the library. Just make sure the second value is greater than '1'.

Don

3

Any pictures to show us how the display looks like? I am assuming you have a HD44780-compatible display but on time a guy had a GLCD and thought he had 20X4 display so it didn't work.

4

Thanks for help, and here are the image of the LCD:

800×532 9.3 KB

I'm going to do it in some days.

Thanks,

Lucas

5

I don't think I can read anything from this out-of-focus image. Try one more time.

6

from reading the back of it, it looks like a graphics LCD.

•Unknown manufacturer TM12864L-2 (tested by frantorres)

Looks like he tested it with this library with pin out B on this page. Arduino Playground - GLCDks0108