Hi,
I bought a 64x32 RGB LED Matrix - 4mm pitch PID: 2278 in order number #2895583-9334366871 on August 2nd.
I had it fully up and running with the mlb-scoreboard-led project as I was hoping to give it as a gift for christmas, and I just turned it on for the first time in a month to update it to the lastest version to test before the mlb season is over and it appears the screen is now faulty. Top left quadrant is a different color than it should be with two lines on top and bottom. I tested with rotating colors and the mlb project and it happens on both.
Thanks for any help.
Bad LED 32x62 Matrix?
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- mikeysklar
- Posts: 14182
- Joined: Mon Aug 01, 2016 8:10 pm
Re: Bad LED 32x62 Matrix?
Thank you for the photos.
Did you end up doing any software or firmware updates since this was last running?
What is the power supply you are using?
Were you powering the Pi from a separate supply?
https://learn.adafruit.com/adafruit-rgb ... aq-3055727
Did you end up doing any software or firmware updates since this was last running?
What is the power supply you are using?
Were you powering the Pi from a separate supply?
https://learn.adafruit.com/adafruit-rgb ... aq-3055727
- ZachPL
- Posts: 10
- Joined: Fri Sep 30, 2022 8:27 pm
Re: Bad LED 32x62 Matrix?
I did update the mlb-led-scoreboard project, but I ran these tests with the rgb matrix project and it happens with everything I run.mikeysklar wrote: ↑Sat Oct 01, 2022 3:37 pm Thank you for the photos.
Did you end up doing any software or firmware updates since this was last running?
What is the power supply you are using?
Were you powering the Pi from a separate supply?
https://learn.adafruit.com/adafruit-rgb ... aq-3055727
I'm using the recommended switching power supply, I wasn't powering the pi from a seperate supply but I just tried that and it is still doing the same thing
Thanks
- mikeysklar
- Posts: 14182
- Joined: Mon Aug 01, 2016 8:10 pm
Re: Bad LED 32x62 Matrix?
Your power supply looks good. I see you are using a 5v/4A.
Did your ribbon cable ends get swapped between the matrix and the hat? I ask because the examples in the guide show the ribbon going the other direction (same orientation as you have for pin1).
Can you post a close up of the soldering on the HAT you have done. It looks reasonable from afar, but I'd like verify the flow is good up close.
What happens when you run the hzeller rgbmatrix demo code?
Did your ribbon cable ends get swapped between the matrix and the hat? I ask because the examples in the guide show the ribbon going the other direction (same orientation as you have for pin1).
Can you post a close up of the soldering on the HAT you have done. It looks reasonable from afar, but I'd like verify the flow is good up close.
What happens when you run the hzeller rgbmatrix demo code?
Code: Select all
sudo ./demo -D0 --led-rows=32 --led-cols=64
- ZachPL
- Posts: 10
- Joined: Fri Sep 30, 2022 8:27 pm
Re: Bad LED 32x62 Matrix?
Hard to get my camera to focus, but I think this shows it pretty goodmikeysklar wrote: ↑Sun Oct 02, 2022 4:26 pm Your power supply looks good. I see you are using a 5v/4A.
Did your ribbon cable ends get swapped between the matrix and the hat? I ask because the examples in the guide show the ribbon going the other direction (same orientation as you have for pin1).
hatmatrix.jpg
Can you post a close up of the soldering on the HAT you have done. It looks reasonable from afar, but I'd like verify the flow is good up close.
What happens when you run the hzeller rgbmatrix demo code?
Code: Select all
sudo ./demo -D0 --led-rows=32 --led-cols=64
I switched the cable around just to see and the same thing was happening.
I tried the demo code it was changing so fast it was hard to get a good picture but the top left quadrant and then those 2 lines were still messed up.
- mikeysklar
- Posts: 14182
- Joined: Mon Aug 01, 2016 8:10 pm
Re: Bad LED 32x62 Matrix?
The soldering is not bad, but some of the joins might need a tiny bit more flow. Can you remove the HAT and go over the joints one more time?
- ZachPL
- Posts: 10
- Joined: Fri Sep 30, 2022 8:27 pm
Re: Bad LED 32x62 Matrix?
Sure I will soon and report back. Thanks.
- ZachPL
- Posts: 10
- Joined: Fri Sep 30, 2022 8:27 pm
Re: Bad LED 32x62 Matrix?
Just reflowed and added some solder to every pin and same issue unfortunately.mikeysklar wrote: ↑Sun Oct 02, 2022 7:03 pm The soldering is not bad, but some of the joins might need a tiny bit more flow. Can you remove the HAT and go over the joints one more time?
- mikeysklar
- Posts: 14182
- Joined: Mon Aug 01, 2016 8:10 pm
Re: Bad LED 32x62 Matrix?
Thank you for going over the soldering.
Which model of Pi are you using? Pi 3 or Pi 4?
If it is a Pi 4 you might need add the slowdown.
Which model of Pi are you using? Pi 3 or Pi 4?
If it is a Pi 4 you might need add the slowdown.
Code: Select all
sudo ./demo -D0 --led-rows=32 --led-cols=64 --led-slowdown-gpio=4
- ZachPL
- Posts: 10
- Joined: Fri Sep 30, 2022 8:27 pm
Re: Bad LED 32x62 Matrix?
It's a 3b+ I was already running the slowdown gpio with the mlb project as well (to cut down on flickering) and it doesnt make a differencemikeysklar wrote: ↑Mon Oct 03, 2022 5:15 pm Thank you for going over the soldering.
Which model of Pi are you using? Pi 3 or Pi 4?
If it is a Pi 4 you might need add the slowdown.
Code: Select all
sudo ./demo -D0 --led-rows=32 --led-cols=64 --led-slowdown-gpio=4
- mikeysklar
- Posts: 14182
- Joined: Mon Aug 01, 2016 8:10 pm
Re: Bad LED 32x62 Matrix?
I see thank you for the clarification.
Here are the issues.
You are a month passed the 30-day warranty when opening this issue.
We don't know if the issue with the HAT, RGB Matrix, power supply or a software change.
This is a bad place to be. Do you have any thoughts on how to narrow things down? That you had a working configuration is reassuring.
Here are the issues.
You are a month passed the 30-day warranty when opening this issue.
We don't know if the issue with the HAT, RGB Matrix, power supply or a software change.
This is a bad place to be. Do you have any thoughts on how to narrow things down? That you had a working configuration is reassuring.
- ZachPL
- Posts: 10
- Joined: Fri Sep 30, 2022 8:27 pm
Re: Bad LED 32x62 Matrix?
I'm willing to purchase another, as I was thinking about making one of these for myself as well. If I buy one and this one works are we able to process an exchange still if it turns out this one is broken?
- mikeysklar
- Posts: 14182
- Joined: Mon Aug 01, 2016 8:10 pm
Re: Bad LED 32x62 Matrix?
I think that could be a workable solution. Were you planning on getting another matrix hat + 32x64 display and 4A power supply?
- ZachPL
- Posts: 10
- Joined: Fri Sep 30, 2022 8:27 pm
Re: Bad LED 32x62 Matrix?
Yes I would need to purchase those aswell.mikeysklar wrote: ↑Tue Oct 04, 2022 3:21 pm I think that could be a workable solution. Were you planning on getting another matrix hat + 32x64 display and 4A power supply?
- mikeysklar
- Posts: 14182
- Joined: Mon Aug 01, 2016 8:10 pm
Re: Bad LED 32x62 Matrix?
Cool. Well lets move forward with this plan. I'll help you with any issues and the return process if something is faulty.
Please be positive and constructive with your questions and comments.