Constant Brightness Passenger Car Lighting

// Constant Brightness Passenger Lighting
// Uses hardware regulation - minimal code needed
const int LED_PIN = 9;
const int BRIGHTNESS = 200; // Adjust for preference

void setup() {
  pinMode(LED_PIN, OUTPUT);
  analogWrite(LED_PIN, BRIGHTNESS);
}

void loop() {
  // Brightness is constant via voltage regulator
  // Add flicker detection if needed:
  // Monitor input voltage and compensate
}