- i am attempting to run 4 8x32 rgb led panels as a marquise w2812b eco led panel from amazon
i have a 20 amp 5 v power supply injected at panel 1 and 3 to spread the power
just trying to test and using the example neo_pixel strand test out of 1024 leds the max i can light up is 600
i have started with nano then uno and mega same result
it uploads and just hangs
i have moved the panels around all leds work just only up to 600
these have the 3 wire in /out like a led strip red +5 white ground green data
my goal is to make an long marquis and scroll calendar and time data using a rtc module or esp8266 wifi unit
everything im seeing in the forums is using matrix and shift registers
so any links to working code that i can study would be awesome as would any tutorials on this issue i may have missed
this is what i have been using it works on 2 panels only thats 64x8
#include <Adafruit_GFX.h>
#include <Adafruit_NeoMatrix.h>
#include <Adafruit_NeoPixel.h>
#ifndef PSTR
#define PSTR // Make Arduino Due happy
#endif
#define PIN 6
// MATRIX DECLARATION:
// Parameter 1 = width of the matrix
// Parameter 2 = height of the matrix
// Parameter 3 = pin number (most are valid)
// Parameter 4 = matrix layout flags, add together as needed:
// NEO_MATRIX_TOP, NEO_MATRIX_BOTTOM, NEO_MATRIX_LEFT, NEO_MATRIX_RIGHT:
// Position of the FIRST LED in the matrix; pick two, e.g.
// NEO_MATRIX_TOP + NEO_MATRIX_LEFT for the top-left corner.
// NEO_MATRIX_ROWS, NEO_MATRIX_COLUMNS: LEDs are arranged in horizontal
// rows or in vertical columns, respectively; pick one or the other.
// NEO_MATRIX_PROGRESSIVE, NEO_MATRIX_ZIGZAG: all rows/columns proceed
// in the same order, or alternate lines reverse direction; pick one.
// See example below for these values in action.
// Parameter 5 = pixel type flags, add together as needed:
// NEO_KHZ800 800 KHz bitstream (most NeoPixel products w/WS2812 LEDs)
// NEO_KHZ400 400 KHz (classic 'v1' (not v2) FLORA pixels, WS2811 drivers)
// NEO_GRB Pixels are wired for GRB bitstream (most NeoPixel products)
// NEO_GRBW Pixels are wired for GRBW bitstream (RGB+W NeoPixel products)
// NEO_RGB Pixels are wired for RGB bitstream (v1 FLORA pixels, not v2)
Adafruit_NeoMatrix matrix = Adafruit_NeoMatrix(64, 8, PIN,
NEO_MATRIX_TOP + NEO_MATRIX_LEFT +
NEO_MATRIX_COLUMNS + NEO_MATRIX_ZIGZAG,
NEO_GRB + NEO_KHZ800);
const uint16_t colors[] = {
matrix.Color(99, 99, 0), matrix.Color(0,99, 99), matrix.Color(99, 0, 99) };
void setup() {
matrix.begin();
matrix.setTextWrap(true);
matrix.setBrightness(55);
matrix.setTextColor(colors[0]);
}
int x = matrix.width();
int pass = 0;
void loop() {
matrix.fillScreen(0);
matrix.setCursor(x, 0);
matrix.print(F(" Hello World! "));
if(--x < -125
) {
x = matrix.width();
if(++pass >= 3) pass = 0;
matrix.setTextColor(colors[pass]);
}
matrix.show();
delay(100);
}
