Hi all, I have a 40*4 LCD display. I use the LiquidCristal library but it doesn't work ok. I checked the datasheet and it shows that you have to use 2 Enable lines E1 and E2. E1 for top 2 rows, E2 for lower 2 rows. although the library tells you that you can use 4 row displays it doesn't support the 2 enable lines?? I tried tying 2 lines together but that doesn't work. Also setting E2 on the display separately just before writing to rows 3 and 4 doesn't work. does someone has experience in this and knows how to solve this?