ST7920

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What steps will reproduce the problem?
1.Using an arduino mega 2560 instead of uno or duemilanove
2.Flashing the project that i created for the other platform
3.

What is the expected output? What do you see instead?
Showing my logos or whatever on the screen.
the contrast is very bad, i just see a milky screen.
but the data is provided as expeted.

i created a header file for the settings:
U8GLIB_ST7920_128X64 u8g(3, 4, 255, U8G_PIN_NONE);
int blPin = 2; // Pin Arduino <----> LCDBacklight 
int blValue = 255;//Helligkeit von 0-255

this is the significant part.

i can use other digital pins. but the backlight needs pwm.

What version of the product are you using? On what operating system?
have a look at the top

Please provide any additional information below.

Thanks

Grüße auch die deutschen Arduino Nutzer//regards from Germany

Original issue reported on code.google.com by sptzd...@gmail.com on 9 Jun 2012 at 12:39

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e-mail sent

Original comment by olikr...@gmail.com on 9 Jun 2012 at 6:34

• Added labels: Milestone-Future

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no response via e-mail so far.
in general: some pic or better description would be great

Original comment by olikr...@gmail.com on 11 Jun 2012 at 8:05

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Hey,
the issuue is solved.

The arduino seems to be influenced by the host.
I programmed it over a Router (Fritz! Box), it simulates a USB port over lan.
which worked so far, but it seems as if there are interferences by the router.
The content is displayed correctly, even the backlight is driven correctly.
with other components (an ethernet shield or so ) this application will work.
If i would create a PCB those errors wouldn't occur if the ground polygons are 
routed proper.

Original comment by sptzd...@gmail.com on 17 Jun 2012 at 12:03

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ok, thanks. I will close this issue

Original comment by olikr...@gmail.com on 17 Jun 2012 at 12:54

• Changed state: WontFix