// 3D LED cube - planes only
// individual LEDs addressed in 3D LED cube here: https://wokwi.com/projects/423354747756189697

// cathodes to ground pin
// color planes anodes share pin

int led[] = {2, 3, 4}; // pins
int aDelay = 333; // approximate one second per cycle

void setup() {
  for (int i = 0; i < 3; i++) {
    pinMode(led[i], OUTPUT);
  }
}

void loop() {
  for (int j = 0; j < 2; j++) {
    for (int i = 0; i < 3; i++) {
      digitalWrite(led[i], j);
      delay(aDelay);
    }
  }
}