struct Blinker {
  uint16_t const distance;
  uint8_t const blinkTime;
  uint8_t const pattern[3];
};

uint8_t const ledPins[] = {10, 11, 9, 12, 13, 4}; // low, high, red, yellow, one, two
Blinker const blinkers[] = {
  {200, 300, {LOW, LOW, LOW}},
  {150, 100, {LOW, HIGH, LOW}},
  {100, 50, {LOW, HIGH, LOW}},
  {75, 25, {LOW, HIGH, LOW}},
  {50, 15, {LOW, HIGH, LOW}},
  {30, 10, {HIGH, LOW, HIGH}},
  {0, 5, {HIGH, HIGH, HIGH}}};
 

void blink(uint16_t const distance) {
  size_t i;
  for (i = 0; distance < blinkers[i].distance; i++);
  Serial.print("distance ");
  Serial.print(distance);
  Serial.print(" is larger or equal than ");
  Serial.println(blinkers[i].distance);
  for (uint8_t const pin: ledPins) {
    digitalWrite(pin, blinkers[i].pattern[0]);
    delay(blinkers[i].blinkTime);
    digitalWrite(pin, blinkers[i].pattern[1]);
    delay(blinkers[i].blinkTime);
    digitalWrite(pin, blinkers[i].pattern[2]);
  }
}


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

  for (uint16_t distance = 0; distance < 210; distance += 5) {
    blink(distance);
  }
}

void loop() {}