Medium 32x32 LED Matrix wrong addressing ?

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swazy
 
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Medium 32x32 LED Matrix wrong addressing ?

Post by swazy »

Hey all.

I recently experimented with the LED matrix and the LED Matrix Shield for IOIOMint (PIXEL Gut Kit), which worked perfectly over Bluetooth.

Now I wanted to hook the LED Matrix from this kit to an Raspberry Pi to do more programming, and somewhere here I did something wrong.

When I hook it up as described in the adafruit tutorial and use this library https://github.com/hzeller/rpi-rgb-led-matrix, the matrix shows everything but not in the right order.

When displaying the text from the demo program, two parts of the display move to the right and the other 2 part move to the left. See gif file (http://www.2imgs.com/4070a78d5e)

First of all the labeling of my LED matrix is not correct because it labels adress pin D as ground. Anyway because I think it is the same as with the other matrices I connect address pin D as shown in most tutorials.

Then I tried different things to solve the problem. Changing G and B pins because I read they are switched sometimes, then I even started to switch the adress pins, but nothing changed it.

Does someone have an idea what could be wrong ?
I don't think it's in the software because I didn't change anything.

Thanks,
Patrick

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adafruit_support_rick
 
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Re: Medium 32x32 LED Matrix wrong addressing ?

Post by adafruit_support_rick »

swazy wrote:First of all the labeling of my LED matrix is not correct because it labels adress pin D as ground. Anyway because I think it is the same as with the other matrices I connect address pin D as shown in most tutorials.
can you post a clear, detailed picture of the connector?

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swazy
 
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Re: Medium 32x32 LED Matrix wrong addressing ?

Post by swazy »

The left one is the input and the right one the output.
photo2.jpg
photo2.jpg (998.15 KiB) Viewed 220 times

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swazy
 
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Re: Medium 32x32 LED Matrix wrong addressing ?

Post by swazy »

Hey,

As it turns out the LED panel shiped with the IOIO shield from PIXEL has different pins and only uses 3 address pins, so one would have to change the code inorder to get it to work. see: https://groups.google.com/forum/?hl=de# ... wUobah14ec

I already ordered new panels.
Thanks.

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