rpi-rgb-led-matrix
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hzeller
ICN2037BP 128x64 ABCDE Panel renders with black bars and incorrect demo images
Hi everyone, I’m new to the hardware side of things and I’ve been trying to get a 128x64 led matrix with ICN2037BP set up with an adafruit + HAT. The output is similar to what is described in https://github.com/hzeller/rpi-rgb-led-matrix/issues/521 issue but I don’t understand the solution. It’s also not using an adafruit HAT so I’m curious if how I can translate it to work with the HAT. Any help would be appreciated because I’m going a little nuts with this. The display output is exactly the same as the first picture in that issue. I have soldered the jumper from E to 8 and done the performance jumper from 4 to 18. But there are black bars on the display. Only the top 1/4 and the 3/4 have output, but the cube demo doesn't render a cube, it renders squares. And 2/4 and 4/4 stay black no matter what settings I've put in. Any help would be appreciated. Thanks!
Can you post a picture of the HAT you're using? i recently had the same issue.
Thanks for replying! Sure. Here it is. I don’t have any mods connected currently because I was trying to get back to square one.
Thanks for replying! Sure. Here it is. I don’t have any mods connected currently because I was trying to get back to square one.
ok we have the same exact one. You need a wire connecting 4 and 18 near the top portion. and also it looks like you soldered the 16 pad near the main connector. I marked it on the edited picture. You need to bridge the solder on E and 8, 16 doesn't need solder so try getting a solder sucker and cleaning that off and bridging the 2 next to it.
I did have solder on those but have cleaned them up since to reset. I also had that jumper wire connected previously. Would you mind sharing the arguments you use so I can compare? I’ll get those connections resoldered and then try it again.
I did have solder on those but have cleaned them up since to reset. I also had that jumper wire connected previously. Would you mind sharing the arguments you use so I can compare? I’ll get those connections resoldered and then try it again.
sudo ./led-image-viewer -f -w3 *.png --led-cols=64 --led-rows=64 --led-chain=2 --led-gpio-mapping=adafruit-hat --led-slowdown-gpio=4 --led-scan-mode=1 --led-pixel-mapper=U -C this and some of the demo files like the rotating cube and the clock was what I was using in the beginning without doing the hardware mods. I got flickers and a black bar. The modding fixed these issues and now everything works properly for me. The flickering in the video is from my phones camera, before the modding the flickering was a lot more noticeable.
https://github.com/hzeller/rpi-rgb-led-matrix/assets/41169055/7589633d-8da9-42c1-8f2f-9a54c6a0de14
Great! I'll give that a shot tomorrow and report back if things are working. Thanks!
