20 x 4 LCD

Forum 2005-2010 (read only) Hardware Interfacing
1

Not sure if this should be here or the software section, but hey. Wont be here long anyway (before they launch new forum).

I was just wondering if the standard LiquidCrystal Lib supports 20 x 4 LCD's. I've done loads of reading and found some pages that mention a modified version of the Lib to support 20 x 4 but these pages are like 3 - 4 years old. Nothing recent. So I thought the modification may have become standard. Thought I'd ask before I possibly start trying something that simply wont work.

Thanks

2

Yes, with a modern IDE. You tell it to use a 20 X 4 with

lcd.begin(20, 4);
3

thanks for confirming that pluggy. I hoped it would be that easy. :wink:

4

Yes, with a modern IDE. You tell it to use a 20 X 4 with

lcd.begin(20, 4);

And with a more modern IDE (such as LiquidCrystal440) both numbers actually do something useful. With the current and recent versions of LiquidCrystal the first number is unused and the second one is only checked to see if it is greater than 1. One side effect is that 16x4 displays currently have rows three and four offset.

Don