const int NOMINAL = 2048, LLIMIT1 = NOMINAL * 0.95, LLIMIT2 = NOMINAL * 0.85; // New lower limits

bool l1 = false, l2 = false; // New lower limit flags

bool checkLimit(int val, int limit, byte pin, bool &flag) {
  bool triggered = val >= limit;
  if (triggered != flag) {
    digitalWrite(pin, flag = triggered);
    return true;
  }
  return false;
}

bool checkLowerLimit(int val, int limit, byte pin, bool &flag) { // New function for lower limits
  bool triggered = val <= limit;
  if (triggered != flag) {
    digitalWrite(pin, flag = triggered);
    return true;
  }
  return false;
}

void setup() {
  pinMode(23, OUTPUT);  pinMode(22, OUTPUT);
  pinMode(21, OUTPUT);  pinMode(19, OUTPUT); // New pins for LL1 & LL2
  Serial.begin(115200);
  Serial.printf("LL1: %.1fV (%d)\nLL2: %.1fV (%d)\n", 
                3.3/2*0.95, LLIMIT1, 3.3/2*0.85, LLIMIT2); // Print lower limits
}

void loop() {
  int val = analogRead(36);
  float v = 3.3 * val / 4095;
  // New lower limit checks
  if (checkLowerLimit(val, LLIMIT1, 21, l1))
    Serial.printf("%.1fV L1 %s\n", v, l1?"App":"Dis");

  if (checkLowerLimit(val, LLIMIT2, 19, l2))
    Serial.printf("%.1fV L2 %s\n", v, l2?"App":"Dis");

  delay(1000);
}