128X128 OLED every other line not working

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dng
 
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128X128 OLED every other line not working

Post by dng »

Hello,

I am running the included Adafruit example, in the Arduino IDE, for the Adafruit GRAYSCALE 1.5" 128X128 OLED display, on I2C, with the Adafruit ESP32 Feather. I cannot get the even index rows to light (0,2,4, etc.). There appears to be some random chat on-line about similar problems, but it seems evenly divided between needing to make changes to initialization code located, somewhere, and the simple fact of having a bad device.

I would appreciate hearing if there is some up-to-date guidance as to why these particular parts and example code might result in the every other row problem, or if it does sound like a bad part.

Thanks for any help.

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adafruit_support_carter
 
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Re: 128X128 OLED every other line not working

Post by adafruit_support_carter »

Please post a photo of your setup showing how everything is connected.

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dng
 
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Re: 128X128 OLED every other line not working

Post by dng »

Hi, Thanks for responding...

Set-up photo attached, running the ssd1327_test example.
Looks like half the interlaced rows are not lit.
I get the same if I draw a filled box, and a single line draw only shows on odd index rows.
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PXL_20230203_022641060_oled_128x128.jpg
PXL_20230203_022641060_oled_128x128.jpg (514.33 KiB) Viewed 93 times

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adafruit_support_carter
 
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Re: 128X128 OLED every other line not working

Post by adafruit_support_carter »

Thanks for the photo. Is the display possibly damaged? Looks like maybe there are cracks here:

disp.png
disp.png (252.07 KiB) Viewed 91 times

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dng
 
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Re: 128X128 OLED every other line not working

Post by dng »

That's what I am now thinking too. Only noticed after taking the picture, and kind of embarrassed I didn't notice when I first plugged it in...too busy being mad about my missing something related to a code tweak.

If you expect the Adafruit example code to be working with this thing right out of the box, then that must be it.
I'll drop another unit to a future DigiKey order.

Thanks again.

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adafruit_support_carter
 
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Re: 128X128 OLED every other line not working

Post by adafruit_support_carter »

The example sketch should just run as is without any needed changes. And wiring looks good.

Did it arrive like that? Might be shipping damage?

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dng
 
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Re: 128X128 OLED every other line not working

Post by dng »

I don't remember exactly what it looked like when I got it, and don't remember banging nor stressing it...but I think I must have, as it was pretty well bubbled-wrapped...I think. Anyway, I'll just get another. Thanks again.

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