matrix portal 20 pin instead 16 pin expected

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mickmick54
 
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matrix portal 20 pin instead 16 pin expected

Post by mickmick54 »

Hi,

I would like to connect my Matrix Portal M4 to an 64x64 RGB LED matrix but the image doesn't load correctly due to the difference between the 20 pins on the Matrix Portal and 16 pins on the RGB LED matrix. Do I need a Breadboard with wire to do that ?

Thanks.

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dastels
 
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Re: matrix portal 20 pin instead 16 pin expected

Post by dastels »

What panel do you have?

Dave

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mickmick54
 
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Re: matrix portal 20 pin instead 16 pin expected

Post by mickmick54 »

Hi Dave,
I have a 64x64 RGB LED Matrix with 3mm pitch.

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dastels
 
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Re: matrix portal 20 pin instead 16 pin expected

Post by dastels »

But what product is it? Where did you get it?

Dave

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mickmick54
 
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Re: matrix portal 20 pin instead 16 pin expected

Post by mickmick54 »

On the Adafruit store. Here is the page of the product : https://www.adafruit.com/product/4732

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dastels
 
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Re: matrix portal 20 pin instead 16 pin expected

Post by dastels »

It should fit perfectly. The outside pairs of pins aren't used by the MatrixPortal, it's a 10x2 connector so that it fits the socket on the matrix without having to worry about getting it lined up correctly.

Dave

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mickmick54
 
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Re: matrix portal 20 pin instead 16 pin expected

Post by mickmick54 »

Ok thanks

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mickmick54
 
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Re: matrix portal 20 pin instead 16 pin expected

Post by mickmick54 »

Ok I have to solder the E line jumper to the 8 jumper on the Matrix Portal, I didn’t do that.

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mickmick54
 
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Re: matrix portal 20 pin instead 16 pin expected

Post by mickmick54 »

Nope even if i sold the jumper on the board it doesn't work correctly.
And I have to sold the 16 jumper and not the 8 as explain in the guide...
the 8 jumper solder make glitch/freeze the image, and not the 16...
So with the 16 jumper solder it's better but the image is still cut.
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an image which not displaying properly
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dastels
 
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Re: matrix portal 20 pin instead 16 pin expected

Post by dastels »

Can we have a clear closeup of the 8/16 jimper area.

Also, try the 64x64 test code: https://learn.adafruit.com/adafruit-mat ... /downloads.

Dave

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mickmick54
 
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Re: matrix portal 20 pin instead 16 pin expected

Post by mickmick54 »

I tried the 64x64 test code, the image is still cut.
here is a picture of the weld with the E addressed to the 16 jumper :
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Untitled-1.jpg (111.7 KiB) Viewed 126 times

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mickmick54
 
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Re: matrix portal 20 pin instead 16 pin expected

Post by mickmick54 »

Here is an 64x64 image i'm trying to display but she's cut and shifted
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tiger
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dastels
 
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Re: matrix portal 20 pin instead 16 pin expected

Post by dastels »

Can you get a better closeup of the jumper area?

Dave

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mickmick54
 
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Re: matrix portal 20 pin instead 16 pin expected

Post by mickmick54 »

Thanks for your help Dave.
Here is a better view of the jumper area. (I can't get any closer my camera is blurry)
I've moved the jumper solder to the 16 jumper and E jumper.
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dastels
 
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Re: matrix portal 20 pin instead 16 pin expected

Post by dastels »

What matrix do you have? And does it require E on 8 or 16? Let's get that correct first.

Dave

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