Solar Based Asset Security System

The purpose of this project is to develop a renewable solution device i.e. solar-powered asset protection system that is capable of safeguarding precious assets from stray animals and theft in off-grid or remote locations. The system is based on STM32G070KBT6 microcontroller that has a movement detection through PIR sensor, vibration sensor, and light sensor for multi-level intruder sensing. Upon vibration or motion detection, the system activates a DFPlayer Mini module to sound an audio alarm from a speaker while also activating a light for visual discouragement. The greatest advantage of the system is including a Real-Time Clock (RTC) with memory, which records the specific date and time of every intrusion incident. This time-stamped information, movement and vibration detection are shown on a real-term display, with useful event history and facilitating future forensic or monitoring use. The whole setup is powered by a monocrystalline solar panel to charge a 12V battery using a charge controller, and a voltage regulator circuit to deliver a constant 3.3V for the microcontroller. The software part is implemented through STM32CubeIDE where UART and GPIO are used for integrating sensors and audio management. The system provides an energy-efficient, sustainable solution appropriate for remote security use.