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--- proyectos:vestuario_aqa [2019/12/06 06:04] – [Leds con plantower] kz
+++ proyectos:vestuario_aqa [2021/05/18 00:18] – kz
@@ Línea 641: / Línea 641: @@
   }
 }
+</code>
+===== mostrar texto en matrix led 8 x 8 una pantalla =====
+<code c++>
+//Adafruit_NeoMatrix example for single NeoPixel Shield.
+//Scrolls 'Howdy' across the matrix in a portrait (vertical) orientation.
+#include <Arduino.h>
+#include <Adafruit_GFX.h>
+#include <Adafruit_NeoMatrix.h>
+#include <Adafruit_NeoPixel.h>
+#ifndef PSTR
+ #define PSTR // Make Arduino Due happy
+#endif
+#define PIN D3
+// MATRIX DECLARATION:
+// Parameter 1 = width of NeoPixel matrix
+// Parameter 2 = height of 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)
+// Example for NeoPixel Shield.  In this application we'd like to use it
+// as a 5x8 tall matrix, with the USB port positioned at the top of the
+// Arduino.  When held that way, the first pixel is at the top right, and
+// lines are arranged in columns, progressive order.  The shield uses
+// 800 KHz (v2) pixels that expect GRB color data.
+// Adafruit_NeoMatrix matrix = Adafruit_NeoMatrix(16, 8, PIN,
+//   NEO_MATRIX_TOP     + NEO_MATRIX_LEFT +
+//   NEO_MATRIX_COLUMNS + NEO_MATRIX_PROGRESSIVE,
+//   NEO_GRB            + NEO_KHZ800);
+Adafruit_NeoMatrix matrix = Adafruit_NeoMatrix(8, 8, PIN,
+  NEO_MATRIX_TOP     + NEO_MATRIX_RIGHT +
+  NEO_MATRIX_COLUMNS + NEO_MATRIX_PROGRESSIVE,
+  NEO_GRB            + NEO_KHZ800
+);
+const uint16_t colors[] = {
+  matrix.Color(255, 0, 0), matrix.Color(0, 255, 0), matrix.Color(0, 0, 255)
+};
+String Word = "Golondrinas, llanaditas, un/loquer, 2021";
+void setup() {
+  matrix.begin();
+  matrix.setTextWrap(false);
+  matrix.setBrightness(40);
+  matrix.setTextColor(colors[0]);
+}
+int x    = matrix.width();
+int pass = 0;
+int pixelsInText = (Word.length() * 7)+8;
+void loop() {
+  matrix.fillScreen(0);
+  matrix.setCursor(x, 0);
+  matrix.print(Word);
+  if(--x < -pixelsInText) {
+    x = matrix.width();
+    if(++pass >= 3) pass = 0;
+    matrix.setTextColor(colors[pass]);
+  }
+  matrix.show();
+  delay(100);
+}
 </code>