Published April 22, 2024 © GPL3+

Creating a Smart Door Lock System with STM32F103C6T6

In this project, we'll guide you through creating a smart door lock system using the STM32F103C6T6.

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Creating a Smart Door Lock System with STM32F103C6T6

Things used in this project

Hardware components

STMicroelectronics STM32F103C6T6 Microcontroller Board

SG90 Micro-servo motor

M5Stack Mini RFID Unit RC522 Module Sensor

RFID Cards

Itead Nextion NX8048T070 - Generic 7.0" HMI TFT LCD Touch Display

Jumper wires (generic)

SparkFun Breadboard Power Supply 5V/3.3V

Story

Circuit Design:

Connect Servo Motor:
Connect the signal pin of the servo motor to a GPIO pin of the STM32F103C6T6.
Connect Servo Motor:Connect the signal pin of the servo motor to a GPIO pin of the STM32F103C6T6.

Connect RFID Reader Module:

Connect the SPI pins (MISO, MOSI, SCK) of the RFID reader module to the corresponding SPI pins of the STM32F103C6T6.
Connect the IRQ pin (if available) of the RFID reader module to a GPIO pin of the STM32F103C6T6.
Connect the RST and SDA pins of the RFID reader module to GPIO pins of the STM32F103C6T6.
Connect RFID Reader Module:Connect the SPI pins (MISO, MOSI, SCK) of the RFID reader module to the corresponding SPI pins of the STM32F103C6T6.Connect the IRQ pin (if available) of the RFID reader module to a GPIO pin of the STM32F103C6T6.Connect the RST and SDA pins of the RFID reader module to GPIO pins of the STM32F103C6T6.

Connect LCD Display:

Connect the VCC and GND pins of the LCD display to the 5V and GND pins of the STM32F103C6T6, respectively.
Connect the RS, RW, and E pins of the LCD display to GPIO pins of the STM32F103C6T6 for control.
Connect the D4-D7 pins of the LCD display to GPIO pins of the STM32F103C6T6 for data.
Connect LCD Display:Connect the VCC and GND pins of the LCD display to the 5V and GND pins of the STM32F103C6T6, respectively.Connect the RS, RW, and E pins of the LCD display to GPIO pins of the STM32F103C6T6 for control.Connect the D4-D7 pins of the LCD display to GPIO pins of the STM32F103C6T6 for data.

Power Supply:

Power the STM32F103C6T6, servo motor, RFID reader module, and LCD display with a 5V power supply.
Power Supply:Power the STM32F103C6T6, servo motor, RFID reader module, and LCD display with a 5V power supply.

Programming

Write a program for the STM32F103C6T6 to control the servo motor and communicate with the RFID reader module and LCD display. Implement logic to read RFID cards or tags, verify access permissions, and control the servo motor to lock or unlock the door.

Testing

Upload the program to the STM32F103C6T6 and power up the circuit. Test the smart door lock system by presenting RFID cards or tags to the RFID reader module. Verify that the system responds correctly by locking or unlocking the door and displaying the status on the LCD display.

Conclusion

Creating a smart door lock system with the STM32F103C6T6 demonstrates its capabilities in implementing secure electronic access control systems. This project can be further enhanced with additional features such as remote access control or integration with a mobile app for smart home automation.