# ESP32 Obstacle Detector with Buzzer Alert

## Description
An IoT system that uses an infrared sensor to detect obstacles and triggers a short buzzer beep as an alert.

## Features
- Real-time obstacle detection
- Short beep on first detection (300ms)
- Silent when area is clear
- Live status via Serial Monitor

## Hardware Required
- ESP32 DevKit (WROOM-32)
- IR Obstacle Sensor (KY-032 or similar)
- Passive or Active Buzzer
- Jumper wires

## Pin Connections

| IR Sensor | ESP32   |
|----------|---------|
| VCC      | 3V3     |
| GND      | GND     |
| OUT      | D14     |

| Buzzer   | ESP32   |
|---------|---------|
| +       | D13     |
| –       | GND     |

## How It Works
- `LOW` on D14 → Obstacle detected → **Buzzer beeps once**
- `HIGH` on D14 → Area clear → **Buzzer off**

## Serial Output Example