image of the interfaced microcontroller

FreeRTOS Real-Time Security System

Nov 12, 2022

Summary

This Real-Time Security System project utilized an STM32F429I-discovery microcontroller along with a PIR motion sensor and an Arducam Mini Module Camera Shield. Developed in C code, the project interfaced these components to display video on-board upon detecting motion. The PIR motion sensor was connected to GPIO (PC8), while the Arducam utilized SPI (SCK, CS, MISO, MOSI) and I2C (SDA, SCL) interfaces. This setup enabled seamless integration and operation of the security system.

Github Repo.

Project Overview

This project is built around the STM32F429I-discovery microcontroller, chosen for its robust processing capabilities and compatibility with various sensors and modules. By connecting a PIR motion sensor to the microcontroller's GPIO pin (PC8) and integrating an Arducam Mini Module Camera Shield through SPI (SCK, CS, MISO, MOSI) and I2C (SDA, SCL) interfaces, the system can detect motion and subsequently trigger video capture and display in real time.

Technical Implementation

The core functionality of the Real-Time Security System is developed in C, a language chosen for its efficiency and direct control over hardware. The implementation involves programming the STM32F429I-discovery microcontroller to process input from the PIR motion sensor and manage data transmission to the Arducam Mini Module Camera Shield. This setup ensures that the video display is activated immediately upon motion detection, providing a timely security response.

System Integration and Operation

The integration of the hardware components via GPIO, SPI, and I2C interfaces facilitates a seamless operation of the security system. This strategic setup allows for efficient communication between the microcontroller, sensor, and camera module, resulting in a reliable and effective security mechanism that operates in real time.

Conclusion

The Real-Time Security System project showcases a practical application of microcontroller programming and hardware integration to create a sophisticated security solution. Its development in C, combined with strategic use of GPIO, SPI, and I2C interfaces, demonstrates an effective approach to building real-time responsive systems for security monitoring.