Built a complete smart cat feeder system that combines AI, IoT, cloud and mobile development. When the cat approaches, a PIR sensor triggers the ESP32-CAM to capture a photo and send it to a local Python server running YOLOv8. If a cat is detected, the server logs the event to Firebase Realtime Database and signals the ESP32, which controls a stepper motor (food) and water pump based on load cell and ultrasonic sensor readings. A custom Android app displays live sensor data, detection history and statistics, and allows manual control of food and water remotely. Push notifications are sent vi