Nodelay + serial

 
// Define the number of actions (you can adjust this as needed)
const int numActions = 6;

// Define the durations for each action (in milliseconds)
const unsigned long actionDurations[] = {3000, 2000, 3000, 4000, 1000, 1000}; // 3s, 2s, 3s, 4s, 1s

// Action variables
int currentAction = 0;
unsigned long previousMillis = 0;
bool restartSequence = true; // Flag to track sequence restart

// LED pins
const int led[] = {3, 4, 5, 6, 7}; // Example pin numbers for LEDs

void setup() {
  Serial.begin(9600);

  // Initialize LED pins
  for (int i = 0; i < numActions; i++) {
    pinMode(led[i], OUTPUT);
    digitalWrite(led[i], LOW);
  }
}

void performAction() {
  unsigned long currentMillis = millis();

  // Check if it's time to switch to the next action
  if (currentMillis - previousMillis >= actionDurations[currentAction]) {
    previousMillis = currentMillis;

    // Execute the current action
    switch (currentAction) {
      case 0:
        // Action 1
        digitalWrite(led[0], HIGH);
        break;
      case 1:
        // Action 2
        digitalWrite(led[0], LOW);
        digitalWrite(led[1], HIGH);
        break;
      case 2:
        // Action 3
        digitalWrite(led[1], LOW);
        digitalWrite(led[2], HIGH);
        break;
      case 3:
        // Action 4
        digitalWrite(led[2], LOW);
        digitalWrite(led[3], HIGH);
        break;
      case 4:
        // Action 5
        digitalWrite(led[3], LOW);
        digitalWrite(led[4], HIGH);
        break;
      case 5:
        // Action 5
        digitalWrite(led[4], HIGH);
        break;
    }

    // Move to the next action or restart sequence
    if (restartSequence) {
      currentAction = 0; // Start from the beginning
      restartSequence = false; // Reset the flag
    } else {
      currentAction = (currentAction + 1) % numActions; // Continue normally
    }
  }
}

void loop() {
  // Check if we received a serial message
  if (Serial.available() > 0) {
    int incomingByte = Serial.read();
    if (incomingByte == 1) {
      // Trigger the animating light function
      performAction();
    } else if (incomingByte == 2) {
      // Turn off all the lights
      for (int i = 0; i < numActions; i++) {
        digitalWrite(led[i], LOW);
      }
      // Restart the sequence from the beginning
      currentAction = 0;
      restartSequence = true;
    }
  }
}