No image/inconsistent output on 64x64 panel

[manfelt]

I bought this 64x64 panel from aliexpress a while ago:

https://www.aliexpress.com/item/32650825019.html?spm=a2g0s.9042311.0.0.254133ed3j1CqW

While the installation and wiring seems to be correct and attached according to the 64x64 panel instruction, my 32x16 panel works fine with the same settings:

![Uploading 20190626_231635.jpg…]()

I'm having trouble showing any consistent picture at all on the 64x64 panel as shown here:

I use this line: sudo examples-api-use/demo -D0

[hzeller]

This might be a panel that has a bit different controlling logic. Do you have a datasheet or know what chipset it uses ?

[postelontwerpen]

@manfelt It's my guess but does this work?: sudo examples-api-use/demo -D0 --led-gpio-mapping=regular --led-rows=64 --led-cols=64

NOTE: if you have an Adafruit Hat, use: --led-gpio-mapping=adafruit-hat-pwm instead of 'regular'

NOTE: I don't see an D pin on the panels you ordered... could be the problem. (the D line is needed for 32x32 > displays; 32x16 displays don't need it) Read this https://github.com/hzeller/rpi-rgb-led-matrix/blob/master/wiring.md

FYI: Here is my partlist: https://github.com/hzeller/rpi-rgb-led-matrix/issues/843#issuecomment-508990265

[jaygarcia]

Hi @postelontwerpen , the part list link doesn't open up anyhing :(

@manfelt were you able to get this project rolling?

[postelontwerpen]

Hi

Im sorry. Did something wrong by pasting my links. Does it work when you copy the links and paste them in your browser?

[jaygarcia]

Hi @postelontwerpen -- stupid me: Didn't think of even copying and pasting. :man_facepalming: Thank you :D