Has anyone else noticed that we haven't even gotten to step 1 of the troubleshooting because we still don't have the basic information we need.(1) Get the backlight (if there is a backlight) working properly.(2) Get the contrast set properly.(3) Connect the Arduino properly.etc.Don
Michael presented very good and detailed 3 pages of how to wire it up and get it working,including a sample sketch (as shown in reply #26) and even a really nice wiring diagram on page 365(attached) and some debugging information in the section.
]There is nothing in the original post that mentions anything specific about the LCD that he is using or the code that he is trying to run it with. I don't see any mention about whether he is or is not using a shield as the word 'shield' appears nowhere in the post.
Quote from: floresta on Dec 09, 2012, 04:38 pm]There is nothing in the original post that mentions anything specific about the LCD that he is using or the code that he is trying to run it with. I don't see any mention about whether he is or is not using a shield as the word 'shield' appears nowhere in the post.Yes there is. He said with a startling clarity that only bad punctuation can provide".ive used sample progs from tronixstuff..... "Now, how clear is that? Your reading skills might be a bit limited, but you only had to stagger to the second line. I made an assumption that he is not using the freetronics shield, for which the tronixstuff code was written, hence his problem. I guess you had difficulty reading my posts as well, but I had the same problem, with the same code for the same reason, hence my posting a solution - which worked for me.
Stop pretending ...
QuoteStop pretending ...That's a little extreme. The guy was just trying to help.
the rest total nonsense....nonsense givers defending nonsense...I jumped in just to make sure the reasonable suggestion is mentioned again with a fresh face...nonsense just escalates.
I see a potentially big problem with that really nice wiring diagram.(1) There aren't very many LCD modules out there (at least I haven't run into any) with the row of terminals at the lower right.(2) There are some, but not very many, LCD modules with pin 1 near the center and pin 14 (or 16) near the edge of the pc board.Since most LCD modules seem to have the terminals at the upper left it is quite possible that his display was simply rotated 180 degrees to match the diagram and then connected exactly backwards by following the diagram, especially if the display has no pin numbers, if the pin numbers are on the bottom, or if the user didn't realize their significance. In that case the backlight works but nothing else will work, especially if any smoke comes out.Don