Full Graphics LCD Controller - blank screen

I had the same issue. I fixed it by making 2 changes to dogm_font_data_marlin.h.

Change this:

Code:

#include <utility/u8g.h>

to this:

Code:

#include <clib/u8g.h>

then change this:

Code:

#include <utility/u8g.h>

to this:

Code:

#include <clib/u8g.h>

 

Excellent. I'll take a look and give it a try.

 

Code:

Sketch uses 140,844 bytes (55%) of program storage space. Maximum is 253,952 bytes.
Global variables use 4,818 bytes (58%) of dynamic memory, leaving 3,374 bytes for local variables. Maximum is 8,192 bytes.

Making progress

 

Ok

"Done Uploading"

Yay! But. Still no dice on the LCD. It lights up but just sits there blue screen and all the pixels darkened a bit. Contrast checked from min to max and no change besides darker pixels. Swapped cables and all i get then is a plain blue screen with no pixels.

In Arduino, should I go to Sketch -> Include Library -> U8glib ? That inserts an include line in the configuration.h file but I don't recall seeing anyone mention that except one video. Every one else says to just dump U8glib into the Library folder and that's it.

 

That doesn't sound promising. It sounds like your LCD might be defective.

 

I blame gremlins.

Turned everything off last night and unplugged the USB then went to crash. Between this and adding a front porch on my house I was beat and didn't have the energy to fight it.

Cut to this morning.

Plugged the USB back in and turned away to start research on the issue. Found the second post on this page http://forums.reprap.org/read.php?1,384006 and was just about to do the Sketch -> Add Library -> U8glib when I turned around and suddenly its fine.



Last night I did all of the same process and it never came up. Guess it needed a good nights sleep?

 

I was beginning to think the same thing until it just woke up this morning. Thanks for the code advice. It was the last speed bump to get over as far as the config and updating went.

 

Yup, did all that last night. Twice. Even undid the ribbon cables just to be sure it was truly dead between attempts. Then I was just too tired to mess with it any longer so left it unplugged all night.

First time with Arduino but not my first rodeo with firmware fun

Thanks for all the help and guidance guys.

I really appreciate it

 

Definitely! I think the LCD and I both needed a good nights sleep

 

This mod has been the greatest thing I've added to my R1+ so far!

 

I got a 2nd LCD screen last week and went to modify the configuration.h file, and all the Marlin tabs were gone. I had been printing with no trouble, but could no longer connect with it. So, I put it back on the Windows 10 machine. Same thing. After trying the other two computers I have successfully connected before, I finally figured out it was the Arduino. This is an R1 purchased in late January 2015. I think I need to start from a blank slate.
I'm not sure if I have the 8mm screws, lead screws, etc. I'm feeling like I'm screwed!
Help?

 

Thank you. I'll get my caliper and magnifying glass and count threads.

 

Thank you Mark. I used a pencil and piece of paper and ran it up and down the threaded rod so I could count the threads more easily. Now I know I have the M8 rods (21 TPI). Downloaded/uploaded the right firmware, and it connected instantly. Yay. I'll let it run like this for a few prints and then try the new LCD screen. Baby steps...

 

I have heard good things about the Plus. Yes, those Z screws are distinctive. Wish I could find an excuse to buy one.