RGB Matrix 32x64 - Numbers and letters via push buttons

[Test_Center]

For a while now I've been looking for the following and since programming is not my strong point I have to rely on examples on the internet. Unfortunately I didn't find it.

I have an RGB Matrix panel 32x64 with an Arduino Mega 2560 in front of me. This whole thing works well in terms of hardware because randomly downloaded sketches all run well.

Now I want to make something that shows letters and numbers in three (or four) columns and that can be set by means of push buttons. Of course x, y filled.

So something like:
Pushbutton 1 -> A…Z , 0…9
Pushbutton 2 -> A…Z , 0…9
Pushbutton 3 -> A…Z , 0…9
Push button 4 -> Next column

Could someone help me out a bit with this?

[anon57585045]

What kind of help do you want? This is a big job.

Also, you posted almost no information about your hardware.

Please read:

How to get the best out of this forum

See also FAQ - Arduino Forum for general rules on forum behaviour and etiquette. Hello, Welcome to the Arduino Forum. This guide explains how to get the best out of this forum. Please read and follow the instructions below. Being new here you might think this is having rules for the sake of rules, but that is not the case. If you don’t follow the guidelines all that happens is there is a long exchange of posts while we try to get you to tell us what we need in order to help you, which is fru…

[paulpaulson]

Hello Test_Center

Keep it simple and stupid firstly.
Run some tutorials for the hardware selected.
If you are happy with the results of the tutorials you can merge these to your project.
Have a nice day and enjoy coding in C++.

[jremington]

Some useful example projects are included with Arduino, detecting button presses being one of them. Study the StateChangeDetection example to learn how to handle a button press properly.

Then try example from Arduino button libraries that allow to distinguish between short and long press, count presses, etc.

[Test_Center]

I thought that my setup was running very well, but it was not.

I try to get my RGB LED Matrix 64x32 to work with an MEGA 2560. I have followed this tutorial

64x32 RGB LED Matrix With Arduino Mega

and run the example from RGBmatrixPanel “testshapes 32x64” .

I got duplicate rows.

There is an topic on this but it was closed without an proper solution.

Duplicate rows on 32 x 64 LED Matrix display

Hi, I'm trying to make a countdown timer using a 32 x 64 LED Matrix and an Arduino Mega. I'm not sure why every time I send a string to the display, it duplicates it on the next row. I'd appreciate some help. I followed this wiring diagram. [Arduino Issue] Here is my code // testshapes demo for RGBmatrixPanel library. // Demonstrates the drawing abilities of the RGBmatrixPanel library. // For 32x64 RGB LED matrix. // https://www.instructables.com/64x32-RGB-LED-Matrix-With-Arduino-Mega/ //…

How can I can rid of this duplicate rows?

My panel is 64x32 1/8 scan.

[anon57585045]

You still have not provided any real hardware information, or even details of your actual problem. Did you read the forum instructions link I posted?

A link to a tutorial, is not an explanation.

[Test_Center]

Hardware:

Arduino MEGA 2560
Led Matrix 64x32 1/8 scan rate

Used Libraries:

RGBmatrixPanel
Adafruit GFX Library

On the silk screen of this panel is “D” marked as “GND” , I assume this is a typo because it makes no difference if I connect D with GND.

[anon57585045]

It's a good start. Please provide links to the libraries used, and authentic documentation of the particular display you are using. Also a wiring diagram showing how you have it connected.

You also did not provide a detailed description of the problem, as requested.

Have you yet read the forum instructions I linked to in reply #2?

You mentioned that you have both a sketch with a problem, and sketches that have no problem. Obviously, the difference is where a troubleshooter would want to look. So please post both your sketch, and one working sketch. Use code tags.

[Test_Center]

Above is my problem, I get everything duplicate on the LED Matrix.
I run the built-in example “testshapes_32x64” from the RGBmatrixPanel library.

WIRING
|R1|24|
|G1|25|
|B1|26|
|GND|GND|
|R2|27|
|G2|28|
|B2|29|
|GND|GND|
|A|A0|
|B|A1|
|C|A2|
|D|A3|
|CLK|11|
|LAT|10|
|OE|9|
|GND|GND|

I’m running this code and I get duplicate rows.

CODE

// testshapes demo for RGBmatrixPanel library.
// Demonstrates the drawing abilities of the RGBmatrixPanel library.
// For 32x64 RGB LED matrix.

// WILL NOT FIT on ARDUINO UNO -- requires a Mega, M0 or M4 board

#include <RGBmatrixPanel.h>

// Most of the signal pins are configurable, but the CLK pin has some
// special constraints.  On 8-bit AVR boards it must be on PORTB...
// Pin 11 works on the Arduino Mega.  On 32-bit SAMD boards it must be
// on the same PORT as the RGB data pins (D2-D7)...
// Pin 8 works on the Adafruit Metro M0 or Arduino Zero,
// Pin A4 works on the Adafruit Metro M4 (if using the Adafruit RGB
// Matrix Shield, cut trace between CLK pads and run a wire to A4).

//#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
#define D   A3

RGBmatrixPanel matrix(A, B, C, D, CLK, LAT, OE, false, 64);

void setup() {

  matrix.begin();

  // draw a pixel in solid white
  matrix.drawPixel(0, 0, matrix.Color333(7, 7, 7));
  delay(500);

  // fix the screen with green
  matrix.fillRect(0, 0, matrix.width(), matrix.height(), matrix.Color333(0, 7, 0));
  delay(500);

  // draw a box in yellow
  matrix.drawRect(0, 0, matrix.width(), matrix.height(), matrix.Color333(7, 7, 0));
  delay(500);

  // draw an 'X' in red
  matrix.drawLine(0, 0, matrix.width()-1, matrix.height()-1, matrix.Color333(7, 0, 0));
  matrix.drawLine(matrix.width()-1, 0, 0, matrix.height()-1, matrix.Color333(7, 0, 0));
  delay(500);

  // draw a blue circle
  matrix.drawCircle(10, 10, 10, matrix.Color333(0, 0, 7));
  delay(500);

  // fill a violet circle
  matrix.fillCircle(40, 21, 10, matrix.Color333(7, 0, 7));
  delay(500);

  // fill the screen with 'black'
  matrix.fillScreen(matrix.Color333(0, 0, 0));

  // draw some text!
  matrix.setTextSize(1);     // size 1 == 8 pixels high
  matrix.setTextWrap(false); // Don't wrap at end of line - will do ourselves

  matrix.setCursor(8, 0);    // start at top left, with 8 pixel of spacing
  uint8_t w = 0;
  char *str = "AdafruitIndustries";
  for (w=0; w<8; w++) {
    matrix.setTextColor(Wheel(w));
    matrix.print(str[w]);
  }
  matrix.setCursor(2, 8);    // next line
  for (w=8; w<18; w++) {
    matrix.setTextColor(Wheel(w));
    matrix.print(str[w]);
  }
  matrix.println();
  //matrix.setTextColor(matrix.Color333(4,4,4));
  //matrix.println("Industries");
  matrix.setTextColor(matrix.Color333(7,7,7));
  matrix.println("LED MATRIX!");

  // print each letter with a rainbow color
  matrix.setTextColor(matrix.Color333(7,0,0));
  matrix.print('3');
  matrix.setTextColor(matrix.Color333(7,4,0));
  matrix.print('2');
  matrix.setTextColor(matrix.Color333(7,7,0));
  matrix.print('x');
  matrix.setTextColor(matrix.Color333(4,7,0));
  matrix.print('6');
  matrix.setTextColor(matrix.Color333(0,7,0));
  matrix.print('4');
  matrix.setCursor(34, 24);
  matrix.setTextColor(matrix.Color333(0,7,7));
  matrix.print('*');
  matrix.setTextColor(matrix.Color333(0,4,7));
  matrix.print('R');
  matrix.setTextColor(matrix.Color333(0,0,7));
  matrix.print('G');
  matrix.setTextColor(matrix.Color333(4,0,7));
  matrix.print('B');
  matrix.setTextColor(matrix.Color333(7,0,4));
  matrix.print('*');

  // whew!
}

void loop() {
  // Do nothing -- image doesn't change
}


// Input a value 0 to 24 to get a color value.
// The colours are a transition r - g - b - back to r.
uint16_t Wheel(byte WheelPos) {
  if(WheelPos < 8) {
   return matrix.Color333(7 - WheelPos, WheelPos, 0);
  } else if(WheelPos < 16) {
   WheelPos -= 8;
   return matrix.Color333(0, 7-WheelPos, WheelPos);
  } else {
   WheelPos -= 16;
   return matrix.Color333(WheelPos, 0, 7 - WheelPos);
  }
}

P5 outddoor 320x160mm Datasheet.pdf (42.2 KB)