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1.5-inch OLED Breakout Board Image Quality
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1.5-inch OLED Breakout Board Image Quality

by Lazz0r on Sun Jan 06, 2019 6:34 pm

I recently purchased one of these https://www.adafruit.com/product/1431 in early December and have only recently had time to mess with it. I've noticed that dark colors on the display appear to cause horizontal brightness artifacts, The effect is more pronounced in person than in photos.

Example when displaying this test Image using the demo Arduino sketch:
image.png
image.png (376 Bytes) Viewed 113 times

on the display it looks like:
IMG_20190106_154855.jpg
IMG_20190106_154855.jpg (77.57 KiB) Viewed 113 times


Did I do something wrong? Can I fix this somehow?
Thanks!

-Lazz0r

Lazz0r
 
Posts: 5
Joined: Sun Sep 11, 2016 1:57 pm

Re: 1.5-inch OLED Breakout Board Image Quality

by adafruit_support_carter on Mon Jan 07, 2019 6:31 pm

Try using the GFX library to create the same thing using calls to the basic graphic shapes. For example, try using fillRect:
https://learn.adafruit.com/adafruit-gfx ... ngles-3-10

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Re: 1.5-inch OLED Breakout Board Image Quality

by Lazz0r on Mon Jan 07, 2019 11:51 pm

Unfortunately, it appears the same sort of thing has happened.

This is the code I used:
Code: Select all | TOGGLE FULL SIZE
tft.fillRect(0, 0, 128, 128, WHITE);
tft.fillRect(32, 32, 64, 64, BLACK);
tft.fillRect(32, 48, 64, 16, WHITE);

The code produces this:
IMG_20190107_213050.jpg
IMG_20190107_213050.jpg (74.7 KiB) Viewed 90 times


I'm beginning to think there may be something up with the unit itself.

Lazz0r
 
Posts: 5
Joined: Sun Sep 11, 2016 1:57 pm

Re: 1.5-inch OLED Breakout Board Image Quality

by adafruit_support_carter on Tue Jan 08, 2019 12:43 am

Thanks for testing that. Yah, something looks off. Can post another photo showing all of the connections including the main board (UNO or whatever it may be).

And just to be sure it's not software related - you're using the latest versions of all the libs? There's been a lot of recent activity with the GFX and display libs.

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Re: 1.5-inch OLED Breakout Board Image Quality

by Lazz0r on Thu Jan 10, 2019 11:02 am

The SSD1351 library had an update to 1.1.0. Unfortunately it didn't fix the problem after updating, recompiling the sketch, and uploading it.

Here is an overview of the connections:
IMG_20190110_083525.jpg
IMG_20190110_083525.jpg (330.87 KiB) Viewed 70 times

Lazz0r
 
Posts: 5
Joined: Sun Sep 11, 2016 1:57 pm

Re: 1.5-inch OLED Breakout Board Image Quality

by adafruit_support_carter on Thu Jan 10, 2019 2:17 pm

I asked about this and apparently it's simply the nature of the OLED display. So it's not the hardware or the software. The only fix would be to minimize the amount of drastic color shifting occurring in your display image.

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Re: 1.5-inch OLED Breakout Board Image Quality

by Lazz0r on Thu Jan 10, 2019 6:26 pm

Oh dang. Well, I'm glad it wasn't something I did, or a defect. Thank you for your assistance.

Lazz0r
 
Posts: 5
Joined: Sun Sep 11, 2016 1:57 pm

Please be positive and constructive with your questions and comments.