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hzeller / rpi-rgb-led-matrix

Controlling up to three chains of 64x64, 32x32, 16x32 or similar RGB LED displays using Raspberry Pi GPIO
GNU General Public License v2.0
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16x32 HUB75 display only half of the board #614

Open paanjailani opened 6 years ago

paanjailani commented 6 years ago

Hello ! Thanks for this project as reference. I have problem which is my LED panel just displayed half (the other half rows remain in light blue color) . Can you assist me on this ? I will give some pictures of it

paanjailani commented 6 years ago

img_20180508_153803

paanjailani commented 6 years ago

img_20180508_144154

hzeller commented 6 years ago

This looks like a wiring issue or the panel is broken. Given that all three colors of the lower half don't seem to work (R2, G2, B2), your panel is probably broken.

paanjailani commented 6 years ago

Hey, thanks for the reply. Aftet rechecked my wiring and I can run it without problem anymore!(i did not see any wiring error 😅) btw. And after run again with the demo (text example) that you provide, seems like other issue i have face which is flickering (unwanted led that turn on/flicker) . I jave try all parameter/optiona that listed . Seems like not help at all. Is it my board ? Thanks again

Here is the sample of picture. Im running -f8x13B.bdf font text 8:00

http://prntscr.com/jkqv3h

hzeller commented 6 years ago

Make sure that you properly connect the grounds and have digital voltage converters between the Pi and the board (e.g. HCT245; I suggest to just solder up one of the adapters). The artifacts between the pixels look like you have floating voltages. Also make sure you have short cables running to your matrix, the ones in your picture look very long.

It might help if you set the --led-slowdown-gpio higher, but you fundamentally have to fix your electrical issues.

paanjailani commented 6 years ago

Thanks again. Will get the adapter ready and will get back to you once again after it had been done.! Thanks again, really appreciate your help :)

On Tue, 22 May 2018, 00:38 Henner Zeller, notifications@github.com wrote:

Make sure that you properly connect the grounds and have digital voltage converters between the Pi and the board (e.g. HCT245; I suggest to just solder up one of the adapters https://github.com/hzeller/rpi-rgb-led-matrix/tree/master/adapter/active-3. The artifacts between the pixels look like you have floating voltages. Also make sure you have short cables running to your matrix, the ones in your picture look very long.

It might help if you set the --led-slowdown-gpio higher, but you fundamentally have to fix your electrical issues.

— You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub https://github.com/hzeller/rpi-rgb-led-matrix/issues/614#issuecomment-390710022, or mute the thread https://github.com/notifications/unsubscribe-auth/AlRU09qWwHO5kNLVDWRvYGmJ9tNZJZjFks5t0u2GgaJpZM4T2Kns .