\#include <FastLED.h>

// LED configuration
\#define LED\_PIN     6
\#define NUM\_LEDS    164  // 41 x 4
\#define BRIGHTNESS  50
\#define COLOR\_ORDER GRB

CRGB leds\[NUM\_LEDS\];

// Grid size
\#define WIDTH  41
\#define HEIGHT 4

// Text settings
const char\* text = "A B C D E F G H I J K L M N O P Q R S T U V W X Y Z  0 1 2 3 4 5 6 7 8 9";
int scrollSpeed = 100; // Speed of scrolling (ms)

// 4x5 font data (A-Z, 0-9, space)
const uint8\_t font\[\]\[4\] = {
{0b1110, 0b1001, 0b1001, 0b1110}, // A
{0b1111, 0b1001, 0b1001, 0b0110}, // B
{0b1110, 0b1000, 0b1000, 0b0110}, // C
{0b1111, 0b1001, 0b1001, 0b1110}, // D
{0b1111, 0b1000, 0b1000, 0b1000}, // E
{0b1111, 0b1000, 0b1000, 0b1000}, // F
{0b1110, 0b1000, 0b1001, 0b0111}, // G
{0b1001, 0b1001, 0b1111, 0b1001}, // H
{0b1111, 0b0010, 0b0010, 0b1111}, // I
{0b0001, 0b0001, 0b0001, 0b1110}, // J
{0b1001, 0b1010, 0b1100, 0b1000}, // K
{0b1000, 0b1000, 0b1000, 0b1111}, // L
{0b1001, 0b1101, 0b1011, 0b1001}, // M
{0b1001, 0b1011, 0b1101, 0b1001}, // N
{0b1110, 0b1001, 0b1001, 0b1110}, // O
{0b1111, 0b1001, 0b1000, 0b1000}, // P
{0b1110, 0b1001, 0b1001, 0b1110}, // Q
{0b1111, 0b1001, 0b1000, 0b1100}, // R
{0b1110, 0b1001, 0b0011, 0b1110}, // S
{0b1111, 0b0010, 0b0010, 0b0010}, // T
{0b1001, 0b1001, 0b1001, 0b0110}, // U
{0b1001, 0b1001, 0b0100, 0b0100}, // V
{0b1001, 0b1001, 0b1011, 0b1101}, // W
{0b1001, 0b0100, 0b0100, 0b1001}, // X
{0b1001, 0b0100, 0b0100, 0b0100}, // Y
{0b1111, 0b0001, 0b0010, 0b1111}, // Z
{0b1111, 0b1001, 0b1001, 0b0000}, // 0
{0b0010, 0b1111, 0b0000, 0b0000}, // 1
{0b1111, 0b0010, 0b1111, 0b0000}, // 2
{0b1111, 0b0010, 0b1111, 0b0010}, // 3
{0b1001, 0b1111, 0b0001, 0b0001}, // 4
{0b1111, 0b1000, 0b1111, 0b0010}, // 5
{0b1111, 0b1000, 0b1111, 0b1001}, // 6
{0b1111, 0b0001, 0b0001, 0b0001}, // 7
{0b1111, 0b1001, 0b1111, 0b1001}, // 8
{0b1111, 0b1001, 0b1111, 0b0010}, // 9
{0b0000, 0b0000, 0b0000, 0b0000}  // Space
};

// Zig-zag mapping function
int XY(int x, int y) {
// Zig-zag mapping; even rows left-to-right, odd rows right-to-left
return (y % 2 == 0) ? (y \* WIDTH + x) : (y \* WIDTH + (WIDTH - 1 - x));
}

// Draw a single column of a character
void drawColumn(uint8\_t charIndex, int col, int xOffset, CRGB color) {
for (int y = 0; y < HEIGHT; y++) {
int x = xOffset + col; // Offset the column
if (font\[charIndex\]\[col\] & (1 << y)) { // Check the font bitmap
int index = XY(x, y); // Get the correct LED index
if (index >= 0 && index < NUM\_LEDS) { // Bounds check
leds\[index\] = color;
}
}
}
}

// Draw a character
void drawChar(char c, int xOffset, CRGB color) {
int charIndex = (c >= 'A' && c <= 'Z') ? c - 'A' : (c >= '0' && c <= '9') ? c - '0' + 26 : 36; // 36 for space
for (int col = 0; col < 4; col++) {
drawColumn(charIndex, col, xOffset, color);
}
}

// Scroll text across the grid
void scrollText(const char\* text, CRGB color) {
static int scrollOffset = WIDTH; // Start from the right edge
static unsigned long lastUpdate = 0;

if (millis() - lastUpdate > scrollSpeed) {
lastUpdate = millis();

// Clear the grid
fill\_solid(leds, NUM\_LEDS, CRGB::Black);

// Draw the scrolling text
int textLength = strlen(text);
for (int i = 0; i < textLength; i++) {
drawChar(text\[i\], (i \* 5) - scrollOffset, color);
}

scrollOffset++;
if (scrollOffset > (textLength \* 5) + WIDTH) { // Reset appropriately
scrollOffset = 0; // Reset back to the start
}

FastLED.show();
}
}

void setup() {
FastLED.addLeds<WS2812, LED\_PIN, COLOR\_ORDER>(leds, NUM\_LEDS).setCorrection(TypicalLEDStrip);
FastLED.setBrightness(BRIGHTNESS);
}

void loop() {
scrollText(text, CRGB::Red); // Scroll text in red
}