How to Fix LED Matrix panel?

EL Wire/Tape/Panels, LEDs, pixels and strips, LCDs and TFTs, etc products from Adafruit

Moderators: adafruit_support_bill, adafruit

Please be positive and constructive with your questions and comments.
Locked
User avatar
Gaurinn
 
Posts: 7
Joined: Thu Mar 23, 2023 10:49 am

How to Fix LED Matrix panel?

Post by Gaurinn »

I bought this LED Matrix panel https://www.adafruit.com/product/2026 (Order No: 3006067-3551398010), and it is not working as it should. There are a few rows (from top: rows 6,7,14 and 21) where the Leds light up when they shouldn´t. When anything on the same column is lit those rows also light up.( see images ) I´ve tried with different example codes, different controllers: Teensy with a SmartLed shield and an Arduino Mega and always the same glitch.
Is there anything I can do to fix the panel? Like fixing the soldering in an oven like people have done with graphics cards. Any suggestions?
Image
Image

User avatar
adafruit_support_carter
 
Posts: 29168
Joined: Tue Nov 29, 2016 2:45 pm

Re: How to Fix LED Matrix panel?

Post by adafruit_support_carter »

How are you making the connection between the matrix panel and the controller boards?

User avatar
Gaurinn
 
Posts: 7
Joined: Thu Mar 23, 2023 10:49 am

Re: How to Fix LED Matrix panel?

Post by Gaurinn »

Teensy 4.0 is connected using a SmartLED shield v5, and the ArduinoMega connected using wires.

User avatar
adafruit_support_carter
 
Posts: 29168
Joined: Tue Nov 29, 2016 2:45 pm

Re: How to Fix LED Matrix panel?

Post by adafruit_support_carter »

Direct wiring with jumper wires is very problematic and not supported:
https://learn.adafruit.com/32x16-32x32- ... mper-wires

The SmartLED shield should generally be OK though. Are you following this for setup?
https://docs.pixelmatix.com/SmartMatrix/shield-t4.html

Are you running one of the examples from the library?
https://github.com/pixelmatix/SmartMatr ... r/examples

User avatar
Gaurinn
 
Posts: 7
Joined: Thu Mar 23, 2023 10:49 am

Re: How to Fix LED Matrix panel?

Post by Gaurinn »

To answer you questions, Yes, Yes and Yes.
Jumper cables are problematic.
Followed the pixelmatix instructions.
Running the SmartMatrix examples.

User avatar
adafruit_support_carter
 
Posts: 29168
Joined: Tue Nov 29, 2016 2:45 pm

Re: How to Fix LED Matrix panel?

Post by adafruit_support_carter »

Please try posting in the pixelmatix forums:
https://community.pixelmatix.com/
Specify exactly which one of their examples you are running in the photo above.

Locked
Please be positive and constructive with your questions and comments.

Return to “Glowy things (LCD, LED, TFT, EL) purchased at Adafruit”