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128X64 OLED featherwing display very dim
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128X64 OLED featherwing display very dim

by Apogeemike82 on Sun Oct 17, 2021 9:34 pm

Hello,
I got my new feather wing 128X64 featherwing connected and working on example code last night and the display looked awesome. great contrast very easy to read; however, this morning I plug it back into the computer and the display has gone very dim. It is unreadable even 100mm distance in a dimly lit room. I had the featherwing plugged into a M4 CAN feather and an M0 adalogger. The display is very dim on both boards. Is there a way of changing the brightness?

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Re: 128X64 OLED featherwing display very dim

by Apogeemike82 on Mon Oct 18, 2021 1:31 am

I have replied with a photo so to show you what the screen currently looks like. It is still getting worse even though nothing has changed. If anyone has any ideas on what I can do to fix this it would be greatly appreciated.
Attachments
OLED featherwing.jpg
OLED featherwing.jpg (94.39 KiB) Viewed 187 times

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Re: 128X64 OLED featherwing display very dim

by adafruit_support_carter on Mon Oct 18, 2021 2:53 pm

Try touching up the soldering on the pins:
https://learn.adafruit.com/adafruit-gui ... n-problems

Maybe it's getting marginal power due to an under soldered pin? Worth trying at least to see if it helps.

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Re: 128X64 OLED featherwing display very dim

by Apogeemike82 on Tue Oct 19, 2021 5:21 am

Thanks for your assistance. I have resoldered the pins to the best of my ability. This looks good to me. Unfortunately though it hasn’t made any improvement to the screen brightness.the photo attached is with the screen actually turned on. Is there anything else I should try?
Attachments
93A5DEBA-EF67-48BA-BA4D-BE0E62A7B4E0.jpeg
93A5DEBA-EF67-48BA-BA4D-BE0E62A7B4E0.jpeg (100.11 KiB) Viewed 180 times

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Re: 128X64 OLED featherwing display very dim

by adafruit_support_carter on Tue Oct 19, 2021 11:09 am

Thanks. That looks much better. Nicely done!

Which Feather main board are you currently using and how is everything stacked up and connected? It looks like you are on a breadboard. So is it like? [breadboard][feather with stacking headers][featherwing oled] ?

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Re: 128X64 OLED featherwing display very dim

by Apogeemike82 on Fri Oct 22, 2021 2:26 am

oled1.jpg
oled1.jpg (132.69 KiB) Viewed 150 times
G'day the featherwing OLED is currently sitting on the M4 CAN feather which has been soldered with staking pins as per the attached photos.

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Re: 128X64 OLED featherwing display very dim

by Apogeemike82 on Fri Oct 22, 2021 2:28 am

another view of the setup.
Attachments
oled2.jpg
oled2.jpg (152.75 KiB) Viewed 150 times

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Re: 128X64 OLED featherwing display very dim

by adafruit_support_carter on Fri Oct 22, 2021 4:33 pm

That all looks fine.


It sounds like it was originally working OK, then stopped working:
connected and working on example code last night and the display looked awesome. great contrast very easy to read; however, this morning I plug it back into the computer and the display has gone very dim.


Can you correlate that to anything? Was it left unpowered overnight? Etc?

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Re: 128X64 OLED featherwing display very dim

by Apogeemike82 on Sat Oct 23, 2021 4:11 am

No sorry I am unable to correlate with anything. It was working the night before and disconnected it once finished. The next the morning I connected it and could barely see the graphics.

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Re: 128X64 OLED featherwing display very dim

by adafruit2 on Sat Oct 23, 2021 11:42 am

thats quite odd, usually its a contrast setting. what if you totally disconnect the feather form power. wait a bit, then re-upload the sketch?

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Re: 128X64 OLED featherwing display very dim

by Apogeemike82 on Sun Oct 24, 2021 6:07 am

Hello, I had the feather disconnected from power for a few days and tried to reload the sketch. It's still very dim. In fact I think it is getting worse. It is also very dim on my M0 feather I think the problem must be with the featherwing components.

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Re: 128X64 OLED featherwing display very dim

by adafruit2 on Sun Oct 24, 2021 12:46 pm

ok weird, lets replace it - email support@adafruit for a new wing

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Re: 128X64 OLED featherwing display very dim

by adafruit_support_carter on Fri Nov 05, 2021 12:12 pm

Hey @Apogeemike82 - Just wondering if the replacement worked, and has continued to work, OK? This is a weird issue and want to rule out the potential it might be software related. So knowing how things worked with your setup will help. Thanks!

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Please be positive and constructive with your questions and comments.