Arduino_LED_Cube.cpp

#include <avr/pgmspace.h> // allows use of PROGMEM

#define CUBESIZE 4
#define PLANESIZE CUBESIZE*CUBESIZE
#define PLANETIME 100 // time each plane is displayed in us -> 100 Hz refresh
#define TIMECONST 20 // multiplies DisplayTime to get ms

// store LED Pattern Table in PROGMEM
// last column is display time in 100ms
const char PROGMEM PatternTable[] = {
// Magic Box
B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0110,B0110,B0000,10,
B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0110,B0110,B0000,B0000,B0110,B0110,B0000,10,
B0000,B0000,B0000,B0000,B0000,B0110,B0110,B0000,B0000,B0110,B0110,B0000,B0000,B0000,B0000,B0000,10,
B0000,B0110,B0110,B0000,B0000,B0110,B0110,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
B0000,B1100,B1100,B0000,B0000,B1100,B1100,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
B1100,B1100,B0000,B0000,B1100,B1100,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
B0110,B0110,B0000,B0000,B0110,B0110,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
B0000,B0000,B0000,B0000,B0110,B0110,B0000,B0000,B0110,B0110,B0000,B0000,B0000,B0000,B0000,B0000,10,
B0000,B0000,B0000,B0000,B0000,B0110,B0110,B0000,B0000,B0110,B0110,B0000,B0000,B0000,B0000,B0000,10,
B0000,B0000,B0000,B0000,B0000,B0000,B0110,B0110,B0000,B0000,B0110,B0110,B0000,B0000,B0000,B0000,10,
B0000,B0000,B0000,B0000,B0000,B0000,B0011,B0011,B0000,B0000,B0011,B0011,B0000,B0000,B0000,B0000,10,
B0000,B0000,B0000,B0000,B0000,B0011,B0011,B0011,B0000,B0011,B0011,B0000,B0000,B0000,B0000,B0000,10,
B0000,B0000,B0000,B0000,B0000,B0110,B0110,B0000,B0000,B0110,B0110,B0000,B0000,B0000,B0000,B0000,10,
B0000,B0110,B0110,B0000,B0000,B0110,B0110,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
B0000,B1100,B1100,B0000,B0000,B1100,B1100,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
B1100,B1100,B0000,B0000,B1100,B1100,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
B0110,B0110,B0000,B0000,B0110,B0110,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
B0000,B0000,B0000,B0000,B0110,B0110,B0000,B0000,B0110,B0110,B0000,B0000,B0000,B0000,B0000,B0000,10,
B0000,B0000,B0000,B0000,B0000,B0110,B0110,B0000,B0000,B0110,B0110,B0000,B0000,B0000,B0000,B0000,10,
B0000,B0000,B0000,B0000,B0000,B1110,B1110,B0000,B0000,B1110,B1110,B0000,B0000,B0000,B0000,B0000,10,
B0000,B0000,B0000,B0000,B0000,B1111,B1111,B0000,B0000,B1111,B1111,B0000,B0000,B0000,B0000,B0000,10,
B0000,B1111,B1111,B0000,B0000,B1111,B1111,B0000,B0000,B1111,B1111,B0000,B0000,B0000,B0000,B0000,10,
B0000,B1111,B1111,B0000,B0000,B1111,B1111,B0000,B0000,B1111,B1111,B0000,B0000,B1111,B1111,B0000,10,
B1111,B1111,B1111,B0000,B1111,B1111,B1111,B0000,B1111,B1111,B1111,B0000,B1111,B1111,B1111,B0000,10,
B1111,B1111,B1111,B1111,B1111,B1111,B1111,B1111,B1111,B1111,B1111,B1111,B1111,B1111,B1111,B1111,10,
B0000,B0000,B0000,B0000,B1111,B1111,B1111,B1111,B1111,B1111,B1111,B1111,B1111,B1111,B1111,B1111,10,
B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B1111,B1111,B1111,B1111,B1111,B1111,B1111,B1111,10,
B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B1111,B1111,B1111,B1111,10,
B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
// Snake
B0000,B0000,B0000,B1000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
B0000,B0000,B1000,B1000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
B0000,B1000,B1000,B1000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
B1000,B1000,B1000,B1000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
B1100,B1000,B1000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
B1110,B1000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
B1110,B0000,B0000,B0000,B0010,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
B0110,B0000,B0000,B0000,B0011,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
B0010,B0000,B0000,B0000,B0011,B0001,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
B0000,B0000,B0000,B0000,B0011,B0001,B0001,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
B0000,B0000,B0000,B0000,B0001,B0001,B0001,B0001,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
B0000,B0000,B0000,B0000,B0000,B0001,B0001,B0011,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
B0000,B0000,B0000,B0000,B0000,B0000,B0001,B0111,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
B0000,B0000,B0000,B0000,B0000,B0000,B0000,B1111,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
B0000,B0000,B0000,B0000,B0000,B0000,B0000,B1110,B0000,B0000,B0000,B1000,B0000,B0000,B0000,B0000,10,
B0000,B0000,B0000,B0000,B0000,B0000,B0000,B1100,B0000,B0000,B1000,B1000,B0000,B0000,B0000,B0000,10,
B0000,B0000,B0000,B0000,B0000,B0000,B0000,B1000,B0000,B0000,B1100,B1000,B0000,B0000,B0000,B0000,10,
B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B1110,B1000,B0000,B0000,B0000,B0000,10,
B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B1111,B0000,B0000,B0000,B0000,B0000,10,
B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0001,B0111,B0000,B0000,B0000,B0000,B0000,10,
B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0001,B0001,B0011,B0000,B0000,B0000,B0000,B0000,10,
B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0001,B0001,B0001,B0000,B0001,B0000,B0000,B0000,10,
B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0001,B0001,B0000,B0000,B0011,B0000,B0000,B0000,10,
B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0001,B0000,B0000,B0000,B0111,B0000,B0000,B0000,10,
B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B1111,B0000,B0000,B0000,10,
B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B1110,B1000,B0000,B0000,10,
B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B1100,B1100,B0000,B0000,10,
B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B1000,B1110,B0000,B0000,10,
B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B1111,B0000,B0000,10,
B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0001,B0000,B0000,B0000,B0111,B0000,B0000,10,
B0000,B0000,B0000,B0000,B0000,B0001,B0000,B0000,B0000,B0001,B0000,B0000,B0000,B0011,B0000,B0000,10,
B0000,B0001,B0000,B0000,B0000,B0001,B0000,B0000,B0000,B0001,B0000,B0000,B0000,B0001,B0000,B0000,10,
B0001,B0001,B0000,B0000,B0000,B0001,B0000,B0000,B0000,B0001,B0000,B0000,B0000,B0000,B0000,B0000,10,
B0011,B0001,B0000,B0000,B0000,B0001,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
B0111,B0001,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
B1111,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
B1111,B1000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
B1111,B1100,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
B1111,B1110,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
B1111,B1111,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
B1111,B1111,B0001,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
B1111,B1111,B0011,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
B1111,B1111,B0111,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
B1111,B1111,B1111,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
B1111,B1111,B1111,B1000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
B1111,B1111,B1111,B1100,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
B1111,B1111,B1111,B1110,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
B1111,B1111,B1111,B1111,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
B1111,B1111,B1111,B1111,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
B0111,B0111,B0111,B0111,B1000,B1000,B1000,B1000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
B0011,B0011,B0011,B0011,B0100,B0100,B0100,B0100,B1000,B1000,B1000,B1000,B0000,B0000,B0000,B0000,10,
B0001,B0001,B0001,B0001,B0010,B0010,B0010,B0010,B0100,B0100,B0100,B0100,B1000,B1000,B1000,B1000,10,
B0001,B0001,B0001,B0001,B0001,B0001,B0001,B0001,B0010,B0010,B0010,B0010,B0100,B0100,B0100,B0100,10,
B0001,B0001,B0001,B0001,B0001,B0001,B0001,B0001,B0001,B0001,B0001,B0001,B0010,B0010,B0010,B0010,10,
B0001,B0001,B0001,B0001,B0001,B0001,B0001,B0001,B0001,B0001,B0001,B0001,B0001,B0001,B0001,B0001,10,
B0010,B0001,B0001,B0001,B0010,B0001,B0001,B0001,B0010,B0001,B0001,B0001,B0010,B0001,B0001,B0001,10,
B0100,B0010,B0001,B0001,B0100,B0010,B0001,B0001,B0100,B0010,B0001,B0001,B0100,B0010,B0001,B0001,10,
B1000,B0100,B0010,B0001,B1000,B0100,B0010,B0001,B1000,B0100,B0010,B0001,B1000,B0100,B0010,B0001,10,
B0000,B1100,B0011,B0000,B0000,B1100,B0011,B0000,B0000,B1100,B0011,B0000,B0000,B1100,B0011,B0000,10,
B0000,B0011,B1100,B0000,B0000,B0011,B1100,B0000,B0000,B0011,B1100,B0000,B0000,B0011,B1100,B0000,10,
//Spinner
B0001,B0010,B0100,B1000,B0001,B0010,B0100,B1000,B0001,B0010,B0100,B1000,B0001,B0010,B0100,B1000,10,
B0010,B0010,B0100,B0100,B0010,B0010,B0100,B0100,B0010,B0010,B0100,B0100,B0010,B0010,B0100,B0100,10,
B0100,B0100,B0010,B0010,B0100,B0100,B0010,B0010,B0100,B0100,B0010,B0010,B0100,B0100,B0010,B0010,10,
B1000,B0100,B0010,B0001,B1000,B0100,B0010,B0001,B1000,B0100,B0010,B0001,B1000,B0100,B0010,B0001,10,
B0000,B1100,B0011,B0000,B0000,B1100,B0011,B0000,B0000,B1100,B0011,B0000,B0000,B1100,B0011,B0000,10,
B0000,B0011,B1100,B0000,B0000,B0011,B1100,B0000,B0000,B0011,B1100,B0000,B0000,B0011,B1100,B0000,10,
B0001,B0010,B0100,B1000,B0001,B0010,B0100,B1000,B0001,B0010,B0100,B1000,B0001,B0010,B0100,B1000,10,
B0010,B0010,B0100,B0100,B0010,B0010,B0100,B0100,B0010,B0010,B0100,B0100,B0010,B0010,B0100,B0100,10,
B0100,B0100,B0010,B0010,B0100,B0100,B0010,B0010,B0100,B0100,B0010,B0010,B0100,B0100,B0010,B0010,10,
B1000,B0100,B0010,B0001,B1000,B0100,B0010,B0001,B1000,B0100,B0010,B0001,B1000,B0100,B0010,B0001,10,
B0000,B1100,B0011,B0000,B0000,B1100,B0011,B0000,B0000,B1100,B0011,B0000,B0000,B1100,B0011,B0000,10,
B0000,B0011,B1100,B0000,B0000,B0011,B1100,B0000,B0000,B0011,B1100,B0000,B0000,B0011,B1100,B0000,10,
B0001,B0010,B0100,B1000,B0001,B0010,B0100,B1000,B0001,B0010,B0100,B1000,B0001,B0010,B0100,B1000,10,
B0010,B0010,B0100,B0100,B0010,B0010,B0100,B0100,B0010,B0010,B0100,B0100,B0010,B0010,B0100,B0100,10,
B0100,B0100,B0010,B0010,B0100,B0100,B0010,B0010,B0100,B0100,B0010,B0010,B0100,B0100,B0010,B0010,10,
B1000,B0100,B0010,B0001,B1000,B0100,B0010,B0001,B1000,B0100,B0010,B0001,B1000,B0100,B0010,B0001,10,
B0000,B1100,B0011,B0000,B0000,B1100,B0011,B0000,B0000,B1100,B0011,B0000,B0000,B1100,B0011,B0000,10,
B0000,B0011,B1100,B0000,B0000,B0011,B1100,B0000,B0000,B0011,B1100,B0000,B0000,B0011,B1100,B0000,10,
B0001,B0010,B0100,B1000,B0001,B0010,B0100,B1000,B0001,B0010,B0100,B1000,B0001,B0010,B0100,B1000,10,
B0010,B0010,B0100,B0100,B0010,B0010,B0100,B0100,B0010,B0010,B0100,B0100,B0010,B0010,B0100,B0100,10,
B0100,B0100,B0010,B0010,B0100,B0100,B0010,B0010,B0100,B0100,B0010,B0010,B0100,B0100,B0010,B0010,10,
B1000,B0100,B0010,B0001,B1000,B0100,B0010,B0001,B1000,B0100,B0010,B0001,B1000,B0100,B0010,B0001,10,
B0000,B1100,B0011,B0000,B0000,B1100,B0011,B0000,B0000,B1100,B0011,B0000,B0000,B1100,B0011,B0000,10,
B0000,B0011,B1100,B0000,B0000,B0011,B1100,B0000,B0000,B0011,B1100,B0000,B0000,B0011,B1100,B0000,10,
B0001,B0010,B0100,B1000,B0001,B0010,B0100,B1000,B0001,B0010,B0100,B1000,B0001,B0010,B0100,B1000,10,
B0000,B0010,B0100,B0000,B0001,B0010,B0100,B1000,B0001,B0010,B0100,B1000,B0001,B0010,B0100,B1000,10,
B0000,B0000,B0000,B0000,B0000,B0010,B0100,B0000,B0001,B0010,B0100,B1000,B0001,B0010,B0100,B1000,10,
B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0010,B0100,B0000,B0001,B0010,B0100,B1000,10,
B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0010,B0100,B0000,10,
//Firework
B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B1000,10,
B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B1000,B0000,B0010,B0000,B1000,10,
B0000,B0000,B0000,B0000,B0000,B0000,B0000,B1000,B0000,B0010,B0000,B1000,B0000,B0010,B1000,B0000,10,
B0000,B0000,B0000,B1000,B0000,B0010,B0000,B1000,B0000,B0010,B1000,B0000,B0000,B0000,B1000,B0000,10,
B0000,B0010,B0000,B1000,B0000,B0010,B1000,B0000,B0000,B0000,B1000,B0000,B0000,B0000,B0000,B0000,10,
B0000,B0010,B1000,B0000,B0000,B0000,B1000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
B0000,B0000,B1000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
B0000,B0100,B0010,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
B0000,B0110,B0110,B0000,B0000,B0100,B0010,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
B1001,B0110,B0110,B1001,B0000,B0110,B0110,B0000,B0000,B0100,B0010,B0000,B0000,B0000,B0000,B0000,10,
B1101,B0111,B1110,B1011,B1001,B0110,B0110,B1001,B0000,B0110,B0110,B0000,B0000,B0100,B0010,B0000,10,
B1111,B1111,B1111,B1111,B1101,B0111,B1110,B1011,B1001,B0110,B0110,B1001,B0000,B0110,B0110,B0000,10,
B1111,B1111,B1111,B1111,B1111,B1111,B1111,B1111,B1101,B0111,B1110,B1011,B1001,B0110,B0110,B1001,10,
B1111,B1111,B1111,B1111,B1111,B1111,B1111,B1111,B1111,B1111,B1111,B1111,B1101,B0111,B1110,B1011,10,
B1111,B1111,B1111,B1111,B1111,B1111,B1111,B1111,B1111,B1111,B1111,B1111,B1111,B1111,B1111,B1111,10,
B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
B1111,B1111,B1111,B1111,B1111,B1111,B1111,B1111,B1111,B1111,B1111,B1111,B1111,B1111,B1111,B1111,10,
B1111,B1111,B1111,B1111,B1111,B1111,B1111,B1111,B1111,B1111,B1111,B1111,B0000,B0000,B0000,B0000,10,
B1111,B1111,B1111,B1111,B1111,B1111,B1111,B1111,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
B1111,B1111,B1111,B1111,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,10,
// SIGNIFIES END OF SHOW (Duration=0)
B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,B0000,0
};

// definition of pins in order from L to R, T to B
// analog inputs 0-5 are also digital outputs 14-19
int LEDPin[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
int PlanePin[] = {19, 18, 17, 16};

void setup()
{
  // Set up all the pins as outputs
  int pin;
  for (pin=0; pin<PLANESIZE; pin++) {
    pinMode( LEDPin[pin], OUTPUT );
  }
  for (pin=0; pin<CUBESIZE; pin++) {
    pinMode( PlanePin[pin], OUTPUT );
  }
}

// display pattern in table until DisplayTime is zero (then repeat)
void loop()
{
  // declare variables
  byte PatternBuf[PLANESIZE]; // saves current pattern from PatternTable
  int PatternIdx;
  byte DisplayTime; // time*100ms to display pattern
  unsigned long EndTime;
  int plane; // loop counter for cube refresh
  int patbufidx; // indexes which byte from pattern buffer
  int ledrow; // counts LEDs in refresh loop
  int ledcol; // counts LEDs in refresh loop
  int ledpin; // counts LEDs in refresh loop
  
  // Initialize PatternIdx to beginning of pattern table
  PatternIdx = 0;
  // loop over entries in pattern table - while DisplayTime>0
  do {
    // read pattern from PROGMEM and save in array
    memcpy_P( PatternBuf, PatternTable+PatternIdx, PLANESIZE );
    PatternIdx += PLANESIZE;
    // read DisplayTime from PROGMEM and increment index
    DisplayTime = pgm_read_byte_near( PatternTable + PatternIdx++ );
    // compute EndTime from current time (ms) and DisplayTime
    EndTime = millis() + ((unsigned long) DisplayTime) * TIMECONST;
    
    // loop while DisplayTime>0 and current time < EndTime
    while ( millis() < EndTime ) {
      patbufidx = 0; // reset index counter to beginning of buffer
      // loop over planes
      for (plane=0; plane<CUBESIZE; plane++) {
        // turn previous plane off
        if (plane==0) {
          digitalWrite( PlanePin[CUBESIZE-1], LOW );
        } else {
          digitalWrite( PlanePin[plane-1], LOW );
        }
        
        // load current plane pattern data into ports
        ledpin = 0;
        for (ledrow=0; ledrow<CUBESIZE; ledrow++) {
          for (ledcol=0; ledcol<CUBESIZE; ledcol++) {
            digitalWrite( LEDPin[ledpin++], PatternBuf[patbufidx] & (1 << ledcol) );
          }
          patbufidx++;
        }
        
        // turn current plane on
        digitalWrite( PlanePin[plane], HIGH );
        // delay PLANETIME us
        delayMicroseconds( PLANETIME );
      } // for plane
    } // while < EndTime
  } while (DisplayTime > 0); // read patterns until time=0 which signals end
}