32x16 LED matrix programing with Adafruit library

Using Arduino Programming Questions
1

I have a led matrix from huidu. I use Adafruit library to programing it. But works so strange. It loads 2 pixel at each time. What is the problem?

#include <RGBmatrixPanel.h>
#define CLK  8   // USE THIS ON ADAFRUIT METRO M0, etc.
//#define CLK A4 // USE THIS ON METRO M4 (not M0)
//#define CLK 11 // USE THIS ON ARDUINO MEGA
#define OE   9
#define LAT 10
#define A   A0
#define B   A1
#define C   A2

RGBmatrixPanel matrix(A, B, C, CLK, LAT, OE, false);

void setup() {
  matrix.begin();
  for(int i = 0; i<32;i++)
  for(int j = 0; j<16;j++)
  {
  matrix.drawPixel(i, j, matrix.Color333(5, 0, 0));
  delay(200);
  }

}

void loop() {
  // put your main code here, to run repeatedly:

}

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196088951_821558635459980_592836962415661086_n720×960 87.5 KB

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198534534_387547456030935_2394081929587289730_n720×960 81.3 KB

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200175255_1092071401283720_1929828576476243064_n720×960 83.4 KB

2

I tried your sketch - same result. the library is broken.

3

Did you tried with adafruit LED matrix or Chinese huidu or other Chinese product?

4

20210618_122824
20210618_1228243264×2448 1.78 MB

1 Like
5

Where did the missing { go?

6

Not necessary in this case.

7

Thank you. Do you use another library for your led matrix?

8

Did you connect D pin to ground? And this panel also have 16x32 LED?

9

I'm sure this worked before. I tested the matrix after purchase and until now tetris was uploaded.

10

my panel is 32*32. D is declared RGBmatrixPanel matrix(A, B, C, D, CLK, LAT, OE, false);
but neither yours nor mine sketch work now.

1 Like
11

My bad, you're right.

12

This library solved my problem.

13

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