RFID Door Lock System

Components

• Arduino UNO
• RFID module
• RFID tags
• LCD screen and I2C module
• SG90 Servo motor
• Door lock
• Jumper wires
• Iron string

Connection

Servo Motor

• Brown wire --> GND
• Red wire --> VIN
• Orange wire --> D3

RFID

• 3.3V --> 3.3V
• RST --> D9
• GND --> GND
• MISO --> D12
• MOSI --> D11
• SCK --> D13
• SDA --> D10

LCD Display

• GND --> GND
• VCC --> 5V
• SDA --> A4
• SCL --> A5

LED

• LED positive --> D4
• LED negative --> one end of the resistor
• other end of the resistor --> GND

Keypad

• Rows --> 5, 6, 7, 8
• Columns --> A0, A1, A2, A3

References

• Website - RFID Door Lock System
• Video Tutorial - RFID Door Lock System

Contributors