// RandomSeed.ino https://wokwi.com/projects/358276294916324353
// for https://forum.arduino.cc/t/toggle-switch-puzzle-but-sequential/1091460/47 

const int seedtype = 4;

void setup() {
  Serial.begin(115200);
  switch (seedtype) {
    case 1:
      randomSeed(20230304) ; //
    case 2:
      pinMode(12, INPUT_PULLUP);
      Serial.println("Ground pin 12 for a random number");
      while (digitalRead(12)) random(RANDOM_MAX);
      break;
    case 3:
      randomSeed(random(RANDOM_MAX) + micros() + analogRead(A0));
      break;
    case 4:
      randomSeed(analogRead(A0)); // 10 bits if you're lucky
      break;
    case 5:
      randomSeed(1+analogRead(A0) % 4); // maybe two bits of randomness
      break;
    case 0:
      break;
    default:
      Serial.println("bad seed scheme");
      ;
  }

  Serial.println(random(RANDOM_MAX));

  for (int i = 6; i; --i)
    Serial.println(random(6));
}

void loop() {
}