// ============================================
//  Barduino Motor Control via Phototransistor
//  Motor ON when dark, Motor OFF when light
// ============================================

// --- Pin Definitions ---
const int MOTOR_PIN        = 1;   // GPIO01 -> IRF520 signal pin
const int PHOTOTRANSISTOR  = 3;   // GPIO03 -> Built-in phototransistor on Barduino

// --- Threshold ---
// Analog value range is 0 to 4095.
// A higher reading = more light detected.
// Adjust this value based on your environment.
// Open the Serial Monitor at 115200 baud to see live readings!
const int LIGHT_THRESHOLD  = 150;

void setup() {
  pinMode(MOTOR_PIN, OUTPUT);       // Set motor pin as output
  digitalWrite(MOTOR_PIN, LOW);     // Make sure motor starts OFF

  Serial.begin(115200);             // Start Serial Monitor for debugging
  Serial.println("Barduino Motor + Phototransistor Ready!");
}

void loop() {
  // Read the phototransistor (0 = dark, 4095 = very bright)
  int lightLevel = analogRead(PHOTOTRANSISTOR);

  // Print the reading to Serial Monitor so you can find the right threshold
  Serial.print("Light level: ");
  Serial.println(lightLevel);

  // Control the motor based on light level
  if (lightLevel > LIGHT_THRESHOLD) {
    // It's LIGHT -> turn motor OFF
    digitalWrite(MOTOR_PIN, LOW);
    Serial.println("Light detected -> Motor OFF");
  } else {
    // It's DARK -> turn motor ON
    analogWriteFrequency(MOTOR_PIN, 20);
    analogWrite(MOTOR_PIN, 25);
    Serial.println("Dark detected -> Motor ON");
  }

  delay(100); // Small pause to avoid flooding the Serial Monitor
}