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.
128X128 OLED every other line not working
Moderators: adafruit_support_bill, adafruit
Please be positive and constructive with your questions and comments.
- adafruit_support_carter
- Posts: 29150
- Joined: Tue Nov 29, 2016 2:45 pm
Re: 128X128 OLED every other line not working
Please post a photo of your setup showing how everything is connected.
- dng
- Posts: 47
- Joined: Wed Feb 04, 2015 11:29 pm
Re: 128X128 OLED every other line not working
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.
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.
- Attachments
-
- PXL_20230203_022641060_oled_128x128.jpg (514.33 KiB) Viewed 93 times
- adafruit_support_carter
- Posts: 29150
- Joined: Tue Nov 29, 2016 2:45 pm
Re: 128X128 OLED every other line not working
Thanks for the photo. Is the display possibly damaged? Looks like maybe there are cracks here:
- dng
- Posts: 47
- Joined: Wed Feb 04, 2015 11:29 pm
Re: 128X128 OLED every other line not working
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.
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.
- adafruit_support_carter
- Posts: 29150
- Joined: Tue Nov 29, 2016 2:45 pm
Re: 128X128 OLED every other line not working
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?
Did it arrive like that? Might be shipping damage?
- dng
- Posts: 47
- Joined: Wed Feb 04, 2015 11:29 pm
Re: 128X128 OLED every other line not working
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.
Please be positive and constructive with your questions and comments.