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How many panels can I use with RGB MATRIX HAT
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How many panels can I use with RGB MATRIX HAT

by beb on Thu Feb 14, 2019 12:59 pm

I want to make a display of 32х16 panels.
I want to use a matrix like this:
[32x16][32x16][32x16][32x16][32x16]
[32x16][32x16][32x16][32x16][32x16]
[32x16][32x16][32x16][32x16][32x16]
[32x16][32x16][32x16][32x16][32x16]
[32x16][32x16][32x16][32x16][32x16]

Can i use a RGB MATRIX HAT with Pi 3 model B+?
The picture will be static with 10 sec change.

beb
 
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Re: How many panels can I use with RGB MATRIX HAT

by adafruit_support_carter on Thu Feb 14, 2019 3:53 pm

Wow, that's a big display. While you can chain displays with the matrix HAT, things get tricky once you exceed a few panels. In the guide:
https://learn.adafruit.com/adafruit-rgb ... i/overview
we mention only testing up to 32x128 (4 panels).

It won't be as simple as chaining all those displays together and connecting them to the HAT, unfortunately.

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Re: How many panels can I use with RGB MATRIX HAT

by beb on Thu Feb 14, 2019 4:00 pm

Any idea I can do this ?
Use a controller/hub for the panels ?

beb
 
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Re: How many panels can I use with RGB MATRIX HAT

by adafruit_support_carter on Thu Feb 14, 2019 4:13 pm

When you get to something that size, the power management becomes non-trivial. You could use the HAT as a way to connect to the matrix array and provide the signal. But it would not be able to directly power all those displays.

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Re: How many panels can I use with RGB MATRIX HAT

by beb on Thu Feb 14, 2019 4:27 pm

Oh, power is not a question, for sure I’ll use external. I am worried about the signal.
How should I connect the matrix of panels.

beb
 
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Re: How many panels can I use with RGB MATRIX HAT

by adafruit_support_carter on Thu Feb 14, 2019 4:36 pm

In general, just chain them with the ribbon cable. Each has an input and output:
https://learn.adafruit.com/32x16-32x32- ... new-wiring

This older guide, which pre-dates the HAT, shows one example:
https://learn.adafruit.com/16x32-rgb-di ... 2/overview

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Re: How many panels can I use with RGB MATRIX HAT

by beb on Thu Feb 14, 2019 4:40 pm

Ty for a reply, I’ll try any tell the result.

beb
 
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Re: How many panels can I use with RGB MATRIX HAT

by adafruit_support_carter on Fri Feb 15, 2019 12:33 am

Awesome. If you get this working, I'm sure there are others out there that would love to see the details. Good luck with the project.

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Please be positive and constructive with your questions and comments.