void drawBeat(String inputString) {
int height = charToInt(inputString[0]);
int color = random(red, white);
for (int xpos = 0; xpos < cubeSides; xpos++) {
for (int ypos = 0; ypos < cubeSides; ypos++) {
for (int zpos = 0; zpos < height; zpos++) {
drawLed(color, xpos, ypos, zpos);
}
}
}
}