can draw text

main/LEDMatrix.h

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+#ifndef LEDMATRIX_H
+#define LEDMATRIX_H
+
+#include <FastLED.h>
+#include <stdint.h>
+
+class LEDMatrix {
+public:
+  LEDMatrix(uint8_t width, uint8_t height, uint16_t numLeds, uint16_t lastVisibleLed, CRGB* leds);
+  uint16_t XY(uint8_t x, uint8_t y);
+  void drawPixel(uint8_t x, uint8_t y, CRGB color);
+
+private:
+  const uint8_t kMatrixWidth;
+  const uint8_t kMatrixHeight;
+  const uint16_t NUM_LEDS;
+  const uint16_t LAST_VISIBLE_LED;
+  const int* XYTable;
+  CRGB* leds; // Add this line
+};
+
+#endif // LEDMATRIX_H