【星壇綜藝會14 期，迎新春】DIY 紅綠藍發光二極管矩陣顯示
RGB LED Matrix Display with Arduino "AIDEXINGKONG 2025 Spring Festival" (愛的星空2025春節）
Control Board: Arduino Uno
Display Board: DC5V WS2812B RGB Flexible LED Panel Matrix Programmable Display Screen Lights
https://www.youtube.com/watch?v=PMT955n09pA
方法，見我以前發表過的一篇
“DIY: express 'I love you!' for someone for $50”：
https://bbs.wenxuecity.com/rdzn/4940014.html
The Program Code:
#include <Adafruit_GFX.h>
#include <Adafruit_NeoMatrix.h>
#include <Adafruit_NeoPixel.h>
#define DATA_PIN 6
#define arr_len( x ) ( sizeof( x ) / sizeof( *x ) )
// setting matrix
Adafruit_NeoMatrix matrix = Adafruit_NeoMatrix(32, 8, DATA_PIN,
NEO_MATRIX_TOP + NEO_MATRIX_LEFT +
NEO_MATRIX_COLUMNS + NEO_MATRIX_PROGRESSIVE + NEO_MATRIX_ZIGZAG,
NEO_GRB + NEO_KHZ800);
char* Text[]= {"AIDEXINGKONG", "2025", "Spring Festival0"};
const uint16_t colors[] = {
matrix.Color(255, 0, 255), matrix.Color(100,255,0), matrix.Color(255,255,0), matrix.Color(0,0,255), matrix.Color(255,0,255), matrix.Color(0,255,255), matrix.Color(255,255,255)};
int brightness = 80;
// end
int numMode = arr_len(Text) - 1;
int numColor = arr_len(colors)-1;
int pixelPerChar = 4;
int maxDisplacement;
int mode =0;
void setup() {
matrix.begin();
matrix.setTextWrap(false);
matrix.setBrightness(brightness);
matrix.setTextColor(colors[0]);
}
int y = matrix.height();
int x = matrix.width();
int pass = 0;
int line_pass =0;
void loop() {
if (mode > numMode) {mode = 0;}
matrix.fillScreen(0);
matrix.setCursor(x, 0);
scroll(Text[mode], 15);
}
// scrolling
void scroll(char* message, int delays) {
maxDisplacement = strlen(message) * pixelPerChar + matrix.width();
if(++line_pass > matrix.width()) line_pass = 0;
matrix.print(String(message));
if(--x < -maxDisplacement) {
x = matrix.width();
if(++pass >= numColor) { pass = 0; };
matrix.setTextColor(colors[pass]);
mode++;
}
matrix.show();
delay(delays);
}
