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Hello,

First of all, I apologize if this problem already exists in another thread. ^^

I encounter a problem with the installation of my 1st PIN2DMD.
I scrupulously followed the tutorial to flash the Nucleo card with the latest version of Lucky01 as well as the update from ST-LINK (3.9.3).
Despite this I still get this strange display...

20220131_183705.thumb.jpg.89f17fb6fd774517025d85b7c889b9e5.jpg

I also tested with older version of ST-LINK but same problem.
My equipment: two P4 panels, a Nucleo F429ZI, a SmallCab shield and a 5V 10A power supply.

Has anyone had the same issue as me?

Regards,

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Thanks.
I just saw your compatible hardware list: NON-PWM chipset => MBI5124, ICN2037, ICN2038, FM6124,FM6126, FM6127.
Not finding the ref in my order, I have to search carefully on the panels. 😋

They look like this (photo from the seller).
image.png.8f394b709e4efea61f7a506c3c564b4d.png

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The version of the panels is one thing (which I would check when I get home but another thing seems odd.
Why, despite the fact that I flash the Nucleo well, I never see it as PIN2DMD but always in STM32?
However under Zadig I check "List All Devices"...

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1 hour ago, Drakken said:

The version of the panels is one thing (which I would check when I get home but another thing seems odd.
Why, despite the fact that I flash the Nucleo well, I never see it as PIN2DMD but always in STM32?
However under Zadig I check "List All Devices"...

 

I guess you connect to the ST-Link interface for flashing. For pin2dmd use the user USB on the opposite side next to the Ethernet port

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Ok, my bad, now i can see the Nucleo as a PIN2DMD. 😅


The display problem remains.
I don't see the type of chipset on this damn panel... the writings on the chips are so small... 🔍


I messaged the seller hoping for a response from him.

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8 hours ago, Drakken said:

Ok, my bad, now i can see the Nucleo as a PIN2DMD. 😅


The display problem remains.
I don't see the type of chipset on this damn panel... the writings on the chips are so small... 🔍


I messaged the seller hoping for a response from him.

 

I´m not sure if you get a useful answer there. There are actually two chipsets which are important. One for the rows and one for the pixel in the row. And then there is the pinout of the connector. All has to be supported to make it work. If it does not work it is not supported, as simple as that.

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I believed it for a moment. ^^

 
This kind of "almost" good image reassures me a little... the panels are perhaps ok and the problem comes from elsewhere.
The company that sold me the shield sent me a new diode to try to get an output voltage closer to 4.2/4.4V instead of the 3.8V I have at the moment.

20220202_205452.jpg

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The right panel looks o.k. Could it be that the panels have different chipsets?

DId you check the orientation of the panels ? They have arrows on it.

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The panels are the same and the orientation is good.

On this test I just reversed the 2 panels.

Maybe one of them, the one now on the left, has a default?
Is it possible that too high voltage is damaged a panel?
My tension at the 1st boot was perhaps a little too high.

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8 hours ago, Drakken said:

Is it possible that too high voltage is damaged a panel?

 

Yes , and often it looks exactly like that if the panel is defective.

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