Issue with Displaying Pixel Propperly

[glappa]

Im using this Matrix Pannel with the panel type 'S3800467M05334 : https://de.aliexpress.com/item/1005005720691780.html?spm=a2g0o.order_list.order_list_main.28.42f65c5flfYDDz&gatewayAdapt=glo2deu on a Raspberry Pi 4, with a Adafruit Bonnet: https://www.amazon.de/dp/B07DNBLXV2?psc=1&ref=ppx_yo2ov_dt_b_product_details

https://github.com/hzeller/rpi-rgb-led-matrix/assets/119673858/f2fbff09-71d6-41e7-b118-e8b23512d851

https://github.com/hzeller/rpi-rgb-led-matrix/assets/119673858/f3882031-486a-433a-8517-2a0c90344f5a

https://github.com/hzeller/rpi-rgb-led-matrix/assets/119673858/99adc201-6f3e-49b3-bfd3-e4d9856552e9

Command used on the Raspberry PI 4 "sudo ./demo -D 7 --led-rows=64 --led-cols=64 --led-gpio-mapping=adafruit-hat --led-slowdown-gpio=5"

[glappa]

It seems like the Pixels are shifted, how can i get the middle on to the top and the bottom one connected to the top one? anyone know the answer

[Nam0]

Could you send a picture of the back of your LED Panel?

[davemaster]

Greetings,

You wanna be helped? First, take many pictures to your panel, specially to: HUB-75 LED INPUT, code of the RGB PANEL. Second, use the command :

Command used on the Raspberry PI 4 "sudo ./demo -D 7 --led-rows=64 --led-cols=64 --led-gpio-mapping=adafruit-hat --led-slowdown-gpio=5"

and record a video of the result.

Best regards

[glappa]

Hello @davemaster. thank you for your reply! here are some picture of the back of my matrix:

as well as a video with the command you provided:

https://github.com/hzeller/rpi-rgb-led-matrix/assets/119673858/ec809e73-d953-4486-85d2-882faef5d0d8

https://github.com/hzeller/rpi-rgb-led-matrix/assets/119673858/edf3e228-e31c-4a25-ba5b-3875730ac5c7

[Nam0]

Hi Glappa, Thanks for all of the pictures and videos, it looks like it might be an issue with how your E Line is set up, I was running a similar setup, slightly different board but same Hub 75 configuration. Could you try and solder a jumper from Pin 4 (OE) to Pin 18 on the RPI Bonnet board and run it again? If you want to double check before soldering it you should be able to steadily hold a wire on the two contacts and it should get reflected instantly on the board.

[glappa]

Hello @Nam0, Did you mean it like this?

Same Result: https://github.com/hzeller/rpi-rgb-led-matrix/assets/119673858/fb277d97-d044-4857-a07c-1e36440d6b20

[Nam0]

Gotcha, and just to double check you have the E and 8 pins on the underside of the bonnet board bridged correct?

[glappa]

this is the backside of the Bonnet:

[Nam0]

Ah I see you don't have the E line pin soldered up, you will need to go thru and bridge the connector from E to 8 for these two pins

[glappa]

i bridged this part of the Bonnet (it is the backsite)

[glappa]

Thank you very much @Nam0 IT WORKS! https://github.com/hzeller/rpi-rgb-led-matrix/assets/119673858/3f06e4a6-fef0-4d0d-955b-ebf8f63dc98a

[glappa]

marked as closed