- Hello Guys, my name is Victor and currently i'm working on a project to use an arduino Mega2560 to show time of arrival of buses for bus stops in my city (kinda like in the metro but for busses) .For that i already worked it out an server that relays to the arduino an json with the upcoming schedules and after some manipulation of data it should display it to some LED painels(HHS P7.62 16x32) chained together, I'm now trying to learn how to make the arduino comunicate with 2 of said LED painels but something strange has happen, i been following this guide:
https://cdn-learn.adafruit.com/downloads/pdf/32x16-32x32-rgb-led-matrix.pdf
but when running the example code test_shapes 16x32 only the top half light up correctly and the bottom half that should display a different message copied the top half and i was able to identify some glitchs compare to the top which was very clean. Any ideia why this might be happening?
Here is the code i'm using:
// testshapes demo for Adafruit RGBmatrixPanel library.
// Demonstrates the drawing abilities of the RGBmatrixPanel library.
// For 16x32 RGB LED matrix:
// http://www.adafruit.com/products/420
// Written by Limor Fried/Ladyada & Phil Burgess/PaintYourDragon
// for Adafruit Industries.
// BSD license, all text above must be included in any redistribution.
#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 8 works on the Arduino Uno & compatibles (e.g. Adafruit Metro),
// 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 ARDUINO UNO, 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();
// draw a pixel in white
// matrix.drawPixel(0, 0, matrix.Color333(7, 7, 7));
// delay(500);
// // fix the screen with green
// matrix.fillRect(0, 0, 32, 16, matrix.Color333(0, 7, 0));
// delay(500);
// draw a box in yellow
// matrix.drawRect(0, 0, 32, 16, matrix.Color333(7, 7, 0));
// delay(500);
// // draw an 'X' in red
// matrix.drawLine(0, 0, 31, 15, matrix.Color333(7, 0, 0));
// matrix.drawLine(31, 0, 0, 15, matrix.Color333(7, 0, 0));
// delay(500);
// draw a blue circle
// matrix.drawCircle(7, 7, 7, matrix.Color333(0, 0, 7));
// delay(500);
// fill a violet circle
// matrix.fillCircle(23, 7, 7, matrix.Color333(7, 0, 7));
// delay(500);
// fill the screen with black
// matrix.fillScreen(matrix.Color333(0, 0, 0));
// draw some text!
matrix.setCursor(1, 0); // start at top left, with one pixel of spacing
matrix.setTextSize(1); // size 1 == 8 pixels high
// print each letter with a rainbow color
matrix.setTextColor(matrix.Color333(7,0,0));
matrix.print('1');
matrix.setTextColor(matrix.Color333(7,4,0));
matrix.print('6');
matrix.setTextColor(matrix.Color333(7,7,0));
matrix.print('x');
matrix.setTextColor(matrix.Color333(4,7,0));
matrix.print('3');
matrix.setTextColor(matrix.Color333(0,7,0));
matrix.print('2');
matrix.setCursor(1, 9); // next line
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
}
and here are some photos(apparently i can put just one photo):
whats is happening:
Any help would be appreciated and sorry for any mistakes, english is not my native language.
