Issue with 64 x 32 RGB LED Panel -- Interlaced display and top half always on

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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Issue with 64 x 32 RGB LED Panel -- Interlaced display and top half always on #492

Closed 594crab closed 6 years ago

594crab commented 6 years ago

sudo ./demo -D 0 -d0 sudo ./demo -D 0 --led-cols=64 -d0 --led-cols 64 sudo ./demo -D 3 -d3 sudo ./demo -D 0 --led-cols=64 -d3 --led-cols 64

The pcb back: ![Uploading PCB-BACK.jpg…]() The hub75 connector: ![Uploading HUB75.jpg…]()

I tried all the options of demo,the issue is not resolved. I reduce the power supply from 5V to 4V,it is the same. I was beated.

594crab commented 6 years ago

row 1,3,5,7 and so on are on.And row 2,4,6,8 and so on are never on.

hzeller commented 6 years ago

double-check your address lines A, B, C, D. At least A is not properly connected. If you continue to have issues make sure to first get logic level converters.

594crab commented 6 years ago

u are right. A connect to 17 and G1 connect to 15. thanks a lot.