Hello,
I've been trying to get my LED display set up to work. I'm using the following equipment from a recent order:
64x64 RGB LED Matrix - 3mm Pitch - 192mm x 192mm PID: 4732
Adafruit RGB Matrix Bonnet for Raspberry Pi PID: 3211
5V 10A switching power supply PID: 658
Raspberry Pi 4 (not purchased from Adafruit)
The issue seems to be with displaying a coherent image. I run the demos available under the rpi-rgi-led-matrix (https://github.com/hzeller/rpi-rgb-led-matrix) directories, but all of them display images like the ones that I've attached to this post.
I've been troubleshooting from the github and post here and nothing seems to be working (i.e., checking the power, disabling sound, GUI, etc.).
I was hoping I could get some tips or possible causes to help me out.
Thanks!
64X64 3mm RGB LED Matrix + RGB Matrix Bonnet + Raspberry Pi
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Please be positive and constructive with your questions and comments.
- tward212
- Posts: 21
- Joined: Mon Nov 08, 2021 4:41 pm
64X64 3mm RGB LED Matrix + RGB Matrix Bonnet + Raspberry Pi
- Attachments
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- LED appearance after putting in demo command
- 20211108_180610.jpg (192.04 KiB) Viewed 596 times
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- LED appearance at rest
- 20211108_180511.jpg (112.91 KiB) Viewed 596 times
- adafruit_support_carter
- Posts: 29172
- Joined: Tue Nov 29, 2016 2:45 pm
Re: 64X64 3mm RGB LED Matrix + RGB Matrix Bonnet + Raspberry
Two quick things to check/try:
For a 64x64 matrix, make sure to solder the jumper on the Bonnet as described here:
https://learn.adafruit.com/adafruit-rgb ... -1745226-8
For a Pi 4, try adding some --led-slowdown-gpio:
https://learn.adafruit.com/adafruit-rgb ... 2982010-30
For a 64x64 matrix, make sure to solder the jumper on the Bonnet as described here:
https://learn.adafruit.com/adafruit-rgb ... -1745226-8
For a Pi 4, try adding some --led-slowdown-gpio:
https://learn.adafruit.com/adafruit-rgb ... 2982010-30
For Raspberry Pi 3 use a slowdown of 1 to start (use higher values if image still flickers). For Raspberry Pi 4, use a slowdown of 4. Older Pi models might work with 0, try it.
- tward212
- Posts: 21
- Joined: Mon Nov 08, 2021 4:41 pm
Re: 64X64 3mm RGB LED Matrix + RGB Matrix Bonnet + Raspberry
Hey, thanks for mentioning both of those. Forgot to mention that I've taken both actions already and I'm receiving the same result as mentioned.
- adafruit_support_carter
- Posts: 29172
- Joined: Tue Nov 29, 2016 2:45 pm
Re: 64X64 3mm RGB LED Matrix + RGB Matrix Bonnet + Raspberry
OK, let's check basic connections. Can you post another photo showing the backside of the RGB matrix with all the cables connected.
- tward212
- Posts: 21
- Joined: Mon Nov 08, 2021 4:41 pm
Re: 64X64 3mm RGB LED Matrix + RGB Matrix Bonnet + Raspberry
Yep, here you go:
- Attachments
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- Raspberry Pi 4 w/ connections
- 20211108_204402.jpg (171.47 KiB) Viewed 591 times
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- Back of Panel
- 20211108_204357.jpg (161.17 KiB) Viewed 591 times
- tward212
- Posts: 21
- Joined: Mon Nov 08, 2021 4:41 pm
Re: 64X64 3mm RGB LED Matrix + RGB Matrix Bonnet + Raspberry
Hey Carter, I also noticed that the LED matrix does not light up on boot. Rather, I only get an image when I unplug/plugin the power cable connection (the white connection). This is the only way I'm able to get an output on the matrix, so I think there may be an issue with the matrix itself.adafruit_support_carter wrote:OK, let's check basic connections. Can you post another photo showing the backside of the RGB matrix with all the cables connected.
- adafruit_support_carter
- Posts: 29172
- Joined: Tue Nov 29, 2016 2:45 pm
Re: 64X64 3mm RGB LED Matrix + RGB Matrix Bonnet + Raspberry
thanks for the photos. That all looks OK.
How are you running things at boot? The matrix won't show anything unless something outputs to the matrix. Running the command line examples is the best way to sanity check the general setup.
How are you running things at boot? The matrix won't show anything unless something outputs to the matrix. Running the command line examples is the best way to sanity check the general setup.
- tward212
- Posts: 21
- Joined: Mon Nov 08, 2021 4:41 pm
Re: 64X64 3mm RGB LED Matrix + RGB Matrix Bonnet + Raspberry
Yep, so I'm running the examples available here: https://github.com/hzeller/rpi-rgb-led- ... es-api-use. Or at least attempting to run them, but typically I don't get any response from the matrix upon executing a demo in the command line.
The only way I've gotten output from the matrix is by unplugging the power connected to the matrix (i.e., the red/black wire) and then as I plug it back in the matrix lights up, but in an abnormal way like in the pictures.
I've tried a number of the parameters available on the github repository, as well as a number of troubleshooting solutions in the forums over there and none seem to make any difference.
Also, if I do get output from the matrix, the colors are often random. As in, it will sometimes show the colors in the pictures, but sometimes show red or some other colors.
The only way I've gotten output from the matrix is by unplugging the power connected to the matrix (i.e., the red/black wire) and then as I plug it back in the matrix lights up, but in an abnormal way like in the pictures.
I've tried a number of the parameters available on the github repository, as well as a number of troubleshooting solutions in the forums over there and none seem to make any difference.
Also, if I do get output from the matrix, the colors are often random. As in, it will sometimes show the colors in the pictures, but sometimes show red or some other colors.
- adafruit_support_carter
- Posts: 29172
- Joined: Tue Nov 29, 2016 2:45 pm
Re: 64X64 3mm RGB LED Matrix + RGB Matrix Bonnet + Raspberry
OK, let's check hardware again. Can you post a photo of the solder job on the E jumper:
https://learn.adafruit.com/assets/63007
https://learn.adafruit.com/assets/63007
- tward212
- Posts: 21
- Joined: Mon Nov 08, 2021 4:41 pm
Re: 64X64 3mm RGB LED Matrix + RGB Matrix Bonnet + Raspberry
Yep, here you go:adafruit_support_carter wrote:OK, let's check hardware again. Can you post a photo of the solder job on the E jumper:
https://learn.adafruit.com/assets/63007
- Attachments
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- Solder on E jumper
- 20211110_162654.jpg (150.51 KiB) Viewed 559 times
- adafruit_support_carter
- Posts: 29172
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Re: 64X64 3mm RGB LED Matrix + RGB Matrix Bonnet + Raspberry
Thanks. Can you do another more at an angle. It's the generally wetting of the solder blob on to the pads that's important to check. The blob itself looks plenty big enough.
Also - what was the exact full command line you were using for running the example demo? Should double check potential software things also.
Also - what was the exact full command line you were using for running the example demo? Should double check potential software things also.
- tward212
- Posts: 21
- Joined: Mon Nov 08, 2021 4:41 pm
Re: 64X64 3mm RGB LED Matrix + RGB Matrix Bonnet + Raspberry
Sure, the photo is attached.adafruit_support_carter wrote:Thanks. Can you do another more at an angle. It's the generally wetting of the solder blob on to the pads that's important to check. The blob itself looks plenty big enough.
Also - what was the exact full command line you were using for running the example demo? Should double check potential software things also.
For the command line:
Some examples are:
sudo ./demo -D0 --led-rows=64 --led-cols=64 --led-slowdown-gpio=4
sudo ./demo -D0 --led-rows=64 --led-cols=64 --led-slowdown-gpio=4 --led-gpio-mapping=adafruit-hat
sudo ./demo -D 0 --led-rows=64 --led-cols=64 --led-no-hardware-pulse --led-gpio-mapping=adafruit-hat --led-row-addr-type=1 --led-panel-type=FM6126A --led-slowdown-gpio=4
and just playing with different variations of all of that.
Also, I set dtparam=audio=off in the config file.
- Attachments
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- 20211110_222209.jpg (113.47 KiB) Viewed 552 times
- tward212
- Posts: 21
- Joined: Mon Nov 08, 2021 4:41 pm
Re: 64X64 3mm RGB LED Matrix + RGB Matrix Bonnet + Raspberry
adafruit_support_carter wrote:Thanks. Can you do another more at an angle. It's the generally wetting of the solder blob on to the pads that's important to check. The blob itself looks plenty big enough.
Also - what was the exact full command line you were using for running the example demo? Should double check potential software things also.
Hey Carter,
I also recently bought a Raspberry PI Zero WH and plugged it into this setup to replace the pi 4 - in case that was the issue. I'm seeing the exact same issues on the Zero that I was seeing on the pi 4. So my only guess is something is up with the Bonnet or the Matrix itself.
- adafruit_support_carter
- Posts: 29172
- Joined: Tue Nov 29, 2016 2:45 pm
Re: 64X64 3mm RGB LED Matrix + RGB Matrix Bonnet + Raspberry
Really weird one. Thanks for all the troubleshooting. Let's do this - let's replace both the Bonnet and the matrix. At this point, there's really no way of knowing if it's the Bonnet or the matrix. And we'd really like to know. So by having a second copy of both, we can find out.
Send an email to [email protected] with a link to this thread and your order number and they can send you a replacements for:
Send an email to [email protected] with a link to this thread and your order number and they can send you a replacements for:
- 64x64 RGB LED Matrix - 3mm Pitch - 192mm x 192mm PID: 4732
- Adafruit RGB Matrix Bonnet for Raspberry Pi PID: 3211
- tward212
- Posts: 21
- Joined: Mon Nov 08, 2021 4:41 pm
Re: 64X64 3mm RGB LED Matrix + RGB Matrix Bonnet + Raspberry
adafruit_support_carter wrote:Really weird one. Thanks for all the troubleshooting. Let's do this - let's replace both the Bonnet and the matrix. At this point, there's really no way of knowing if it's the Bonnet or the matrix. And we'd really like to know. So by having a second copy of both, we can find out.
Send an email to [email protected] with a link to this thread and your order number and they can send you a replacements for:When you get the replacements, respond back here and we'll continue with troubleshooting. Maybe add some markings to the current hardware so the original and replacements can be tracked. Thanks again for working with us so far on this.
- 64x64 RGB LED Matrix - 3mm Pitch - 192mm x 192mm PID: 4732
- Adafruit RGB Matrix Bonnet for Raspberry Pi PID: 3211
Sounds good, I'll let you know when I've received the new matrix/bonnet.
Also, thanks for all the help so far!
Please be positive and constructive with your questions and comments.