LED matrix (P3(2121)64x64-32S-M1) does not show the correct output.

[Yoshinese]

Hi! I have recently started working with LED matrix board and I bought a 64x64 led matrix board with the product number - P3(2121)64x64-32S-M3.

I am using the Matrix Bonet that Adafruit supplies, but quickly realized that a lot of the things do not work. I saw that you had to solder the E and 8 Line together, and have tried to find online forums for help but without any progress. Please help I am extremely stuck.

[Yoshinese]

@hzeller please help

[hzeller]

If you don't feel comfortable doing the Adafruit 64x64 modification, I suggest to get one of the adapters, for instance the electrodragon is ready to go.

[Yoshinese]

Thank you for replaying @hzeller I tried the modification but the results still stayed the same. I think it has to do with the fact that we cannot scratch the pi onto the ground plane because of the solder that is present in the Bonet. Unfortunately I looked into buying the electrodragon but it doesn't seem like it will be coming anytime soon. One thing that did changed was that the squares became much more clearer after the modification - perhaps this is going in the right direction?

[Yoshinese]

Quick question what does scratch the connection from the ground pin exactly mean? Are we able to just not connect that pin 8 back to the bonnet and just directly connect it to pin 24?

[hzeller]

scratch means: disconnect, otherwise you short the wire to ground and that of course does not work. So the copper trace there needs to be cut with a sharp knife until it is disconnected. If you zoom into the picture, you see what it means.

[kiwidave72]

@hzeller please can you help

im getting odd display...ive had this working with out doing the mod (see sonic gif)

but now when i run things (after it sitting a week) im getting rubbish displayed. (demo running)

https://user-images.githubusercontent.com/8468461/118345417-ad68e300-b577-11eb-9339-9bf582b999f0.MOV

https://user-images.githubusercontent.com/8468461/118345374-6844b100-b577-11eb-9a54-3379fe837292.MOV

[MasterChief1335]

Hi by me the colors are blue, purple, white 😭 Pins R1 G1 B1 GND N N N GND A B C NC CLK LAT OE GND

[davemaster]

Greetings,

Try TO USE NOT A HAT, directly to your panel, (where are your panel HUB75 PORT?) TAKE A PICTURE and share your panel data connection

[MasterChief1335]

Greetings,

Try TO USE NOT A HAT, directly to your panel, (where are your panel HUB75 PORT?) TAKE A PICTURE and share your panel data connection

I worked according to the tutorial https://www.instructables.com/RGB-LED-Matrix-With-an-ESP8266/

[davemaster]

Greetings, Try TO USE NOT A HAT, directly to your panel, (where are your panel HUB75 PORT?) TAKE A PICTURE and share your panel data connection

I worked according to the tutorial https://www.instructables.com/RGB-LED-Matrix-With-an-ESP8266/

That instructable, is for a ESP8266 based dev board, NOT for a Raspberry Pi 1-4 board.... this is not for ESP8266, so, You must deep a little for find your stuff... keep going.

[MasterChief1335]

1 I never mentioned that I use Pi? 2 it works, but the colors are wrong! 3 You have to dig a little to find your stuff... keep going. NICE 🙄🤦‍♀️ I would never have thought of that

P4-2121-64x64-32s-m1.1