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Data corruption when enabling multiple channels #4922
Description
Activity
@blazoncek I'm not sure this is a dupe, as it doesn't seem to matter which channels I use, this issue also occurs on versions before 15.0
@aaronmell the issue was present before. If you want to help out, test #4890
@DedeHai I tried the esp32_eth binary. The results were the same.
Also my issue does not seem the same as the issue reported. Mine happens with no effect, one led is just unstable just on a solid color.
I was testing with my LED's connected to GPIO 16 and 4
So I believe this is a wiring issue. I'm having a bit of Déjà vu reading something very similar recently and commenting on it but can't really remember where it is right now.
I believe this is a data wiring issue where the separate data wires over longer distance are causing the issue. If it's an option for OP my thing to try would be replacing the data wires with a set of 2-wire with GND+Data on there and then the boards set to 33R mode. And then do this both both the data lines separately.
That will likely clear up the issues with data corruption you are seeing, especially since you mention it worked fine when testing before installing I do not believe it's something to be fixed in software.
p.s. If you are maybe running a 2-wire cable with 2 data signals on there, then that absolutely is the issue, you can't do that!
@intermittech I posted the same issue in your discord. Wiring runs in the walls so its not possible to replace them.
I can try testing with a shorter wire/wire that is grounded though.
Any sort of signal booster I could add? That might be easier to add here.
Ah! Well I believe I responded the same there, not sure what solution you are looking for here.
I still believe it's the wiring and no signal booster or something like that is going to help I'm afraid. But let's move this back to Discord and please ping me in the topic and share some photos of the actual physical wiring and see how we can potentially improve it. Then you can close the case here since it's not really WLED related in my opinion.
What happened?
Here is my setup
LED are installed in 2 u channels in ceiling
All wiring is ran through the walls
LEDs worked when testing before installing
Separate power wires to both ends and in the middle or both strips
Each strip has its own data wire
Only one difference between test and installation. I added 17IC's to the end of each strip
Issue
If I enable both strips I get data corruption issues. (Led randomly flash and/or changes color at full intensity). The corruption is usually worse on one strip.
If I remove one strip (doesn't matter which one), the issue disappears, and they both seem to be stable
What have I tried (with no change)
Different LED outputs
Lower power settings (both global, and per strip)
Reduced FPS
Re-inspected all solder joints
I2S Improves stability some (not completely though), causes other issues though (colors don't match, and led 0 is frequently the wrong color)
Downgrading to 15.0 and 14.3
Swapped ESP boards
Changed resistor settings on digiQuad
I've played around with basically every setting in LED Configuration
Things I have not yet tried
Shortened data-line cable
To Reproduce Bug
Enabling 2 channels
Expected Behavior
I would expect not to see data corruption with two strips.
Install Method
Binary from WLED.me
What version of WLED?
Lower power se
Which microcontroller/board are you seeing the problem on?
ESP32
Relevant log/trace output
Anything else?
No response
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