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Lot of Pixel Noise / Ghosting #17

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GeorgeFlorian opened this issue Apr 8, 2019 · 3 comments

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@GeorgeFlorian
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commented Apr 8, 2019

OS: Linux Mint 19.1
IDE: Arduino IDE 1.8.8 and esp32-core Release 1.0.1 January 2019
Board: ESP32 Wrover-B DevKitV4

I've ended up using the following GPIOs : 13, 14, 15, 18, 19, 21, 22, 23, 25, 26, 27, 32, 33.
For A , instead of 12 I'm using 13.
For C, instead of 17, I'm using 14.
For B, instead of 16, I'm using 19.

So the constructor should look like this, right ?
P3RGB64x32MatrixPanel matrix(25, 26, 27, 21, 22, 23, 15, 32, 33, 13, 19, 14, 18);

This is how it looks now using a breadboard and ESP32 Wrover-B DevKitV4:

This is the result:

I've ran the testshapes_32x64 example code with the following constructor:

P3RGB64x32MatrixPanel matrix(25, 26, 27, 21, 22, 23, 15, 32, 33, 13, 19, 14, 18);

As you can see there's a lot of pixel noise.
And beside the pixel noise,, I don't think that should be the output... the rows are on top of each other and repeating themselves.

What should appear on the LED Display with the testshapes_32x64 example ?

What do you think the issue is ?

@GeorgeFlorian GeorgeFlorian changed the title LED Noise / Ghosting Lot of Pixel Noise / Ghosting Apr 8, 2019

@GeorgeFlorian

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commented Apr 9, 2019

Any thoughts ?

@NeoCat

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commented Apr 13, 2019

Let's see what happens if pins for D (specifies 8 rows section) are disconnected or moved to other pins.

@GeorgeFlorian

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commented Apr 22, 2019

Let's see what happens if pins for D (specifies 8 rows section) are disconnected or moved to other pins.

  1. D disconnected
  2. D to Ground
  3. D to another pin
    Nothing works.

I've used the following constructor:
P3RGB64x32MatrixPanel matrix(25,5,26,27,23,14,2,33,32,13,21,18,19);

There is now way of selecting row scan patter, is it ?

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