๐ ๏ธ MAKER GUIDEJun 27, 2026โขโฑ๏ธ 2 min readโข๐ณ๐ต Tested in Nepal
Automated Smart Parking Lot Management System with IR Sensors & Servo Gate
Build an intelligent multi-slot car parking system with IR occupancy sensors, 1602 LCD available slot counter, and automatic servo boom barrier.
๐ ๏ธ BILL OF MATERIALS (BOM)
Required Hardware & Component Checklist
Curated components verified for this project. Check the items you need, adjust quantities, and add straight to cart:
Estimated Total (5/5 items):
NPRย 2,090
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NPRย 750
NPRย 600
(NPRย 150 ea)
NPRย 500
NPRย 200
NPRย 40
Automated Smart Parking Lot Management System with IR Sensors & Servo Gate
Track vehicle parking slots using IR Obstacle Avoidance Sensors, displaying available spots on a 1602 LCD and opening gates with an SG90 servo.
Hardware Bill of Materials:
- Microcontroller: Arduino Nano V3.0 Solderless
- Sensors: 4x IR Infrared Obstacle Avoidance Sensor Module
- Display: 1602 (16x2) LCD Display with I2C/IIC interface - Blue Backlight
- Barrier Gate: SG90 9g Micro Servo Motor 180 Degree
- Alert: Active Buzzer (5V)
Circuit Pinout & Wiring Connections:
| Component / Sensor Pin | Arduino Nano Pin | Function / Description |
|---|---|---|
| Entry IR Sensor OUT | Pin D2 (INT0) | Detects Vehicle Arriving at Gate |
| Slot 1 IR Sensor OUT | Pin D3 | Parking Slot 1 Occupancy |
| Slot 2 IR Sensor OUT | Pin D4 | Parking Slot 2 Occupancy |
| Exit IR Sensor OUT | Pin D5 | Detects Vehicle Leaving Gate |
| SG90 Servo PWM | Pin D9 | Boom Barrier Arm Raise/Lower |
| 1602 LCD SDA / SCL | Pin A4 / Pin A5 | I2C Live Free Slots Counter |
| Active Buzzer (+) | Pin D8 | Gate Opening Warning Beep |
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