32x16 RBG LED MATRIX DISPLAY ISSUE

Projects Programming
1

Hello, everyone currently i got a disaply from amazon 32x16 RBG matrix and i want to display text on it.
but when im tryong to upload a text it's not showing the output and im stucked on it as there are no specs or datasheet available for it.
i've visited adafruit site and refer examples but no luck from that too.

the above link is the example site of adafruit and i've done all the connections and command according to that but no luck in that too. i'm using arduino mega for interfacing with 32x16 rgb display.
i'm attaching the connection of my display with my query.
any help or code would be a great help.

Thanks in advance

IMG_20191214_121754.jpg
IMG_20191214_121754.jpg4160×3120 1.8 MB

2

Which Arduino board are you using ?

Please post the program here together with a schematic

3

The OP's Diagram

IMG_20191214_121754.jpg
IMG_20191214_121754.jpg4160×3120 1.8 MB

4

I've come across issues with these boards before, though the examples that are included in the library should work just fine, keep in mind that your CPU will not have time for doing much else than controlling the display.

5

firstly im using arduino mega and the schematic is given in the above link,
code for the display is given below:

#include <RGBmatrixPanel.h>



#define CLK 11 // USE THIS ON ARDUINO MEGA
#define OE   9
#define LAT 10
#define A   A0
#define B   A1
#define C   A2


// Similar to F(), but for PROGMEM string pointers rather than literals
#define F2(progmem_ptr) (const __FlashStringHelper *)progmem_ptr


const char str[] PROGMEM = "Adafruit 16x32 RGB LED Matrix";
int16_t    textX         = matrix.width(),
           textMin       = sizeof(str) * -12,
           hue           = 0;

int8_t ball[3][4] = {
  {  3,  0,  1,  1 }, // Initial X,Y pos & velocity for 3 bouncy balls
  { 17, 15,  1, -1 },
  { 27,  4, -1,  1 }
};


static const uint16_t PROGMEM ballcolor[3] = {
  0x0080, // Green=1
  0x0002, // Blue=1
  0x1000  // Red=1
};

void setup() {
  matrix.begin();
  matrix.setTextWrap(false); // Allow text to run off right edge
  matrix.setTextSize(2);
}

void loop()
 {
  byte i;

  // Clear background
  matrix.fillScreen(0);

  // Bounce three balls around
  for(i=0; i<3; i++) {
    // Draw 'ball'
    matrix.fillCircle(ball[i][0], ball[i][1], 5, pgm_read_word(&ballcolor[i]));
    // Update X, Y position
    ball[i][0] += ball[i][2];
    ball[i][1] += ball[i][3];
    // Bounce off edges
    if((ball[i][0] == 0) || (ball[i][0] == (matrix.width() - 1)))
      ball[i][2] *= -1;
    if((ball[i][1] == 0) || (ball[i][1] == (matrix.height() - 1)))
      ball[i][3] *= -1;
  }

  // Draw big scrolly text on top
  matrix.setTextColor(matrix.ColorHSV(hue, 255, 255, true));
  matrix.setCursor(textX, 1);
  matrix.print(F2(str));

  // Move text left (w/wrap), increase hue
  if((--textX) < textMin) textX = matrix.width();
  hue += 7;
  if(hue >= 1536) hue -= 1536;

#if !defined(__AVR__)
  // On non-AVR boards, delay slightly so screen updates aren't too quick.
  delay(20);
#endif

  // Update display
  matrix.swapBuffers(false);
}

[code]

[/code]

6

Could you provide a pointer to the unit you bought? There are many 16x32 RGB arrays on Amazon and I don't think they are all identical. How sure are you that the array you got from Amazon is an exact duplicate of the array sold by Adafruit?

7

The model im using is SHXPCB05 P10 display 32x16 NORES_V2.5 and it's using HUB75 apart from this i dont have any further information of the product.
my concern is very clear, i just need to display the text and need to know the pattern.

8

The model im using is SHXPCB05 P10 display 32x16 NORES_V2.5 and it's using HUB75 apart from this i dont have any further information of the product.

So where did you get it from ? please just shows us the link to the product on Amazon.
If you have connected it properly (i am doubting you) and you've uploaded one of the examples that come with the library (as you have done i think)
My (our) concern is that what you have is not the same as what the library is designed for.
It's either that or one of the other 2 options. So we need to excluded possible problems, one by one.

9

Your code seems to be missing:

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

Does it even compile?