Smart Auto - Assist Home Safety System

The Smart Auto-Assist Home Safety System is an IoT-enabled surveillance and intrusion detection platform powered by an ESP32-S3-BOX3 and an ESP32 Dev Module. At the core of the system's automation and monitoring capabilities are environmental sensors: a PIR motion sensor detects human movement, while an LDR module measures ambient light levels to determine when auxiliary illumination is required. These sensors interface with the ESP32 microcontroller, which runs FreeRTOS tasks to process inputs and manage outputs concurrently. When motion is detected alongside appropriate lighting conditions, the ESP32 triggers a 4-channel 5V relay module to switch between incandescent bulbs and LED bulbs automatically. Simultaneously, the system tracks electrical safety and power usage using specialized metering hardware. A PZEM-004t module measures AC electrical parameters, while an ACS712 current sensor monitors line current. Circuit protection is provided by a 5A fuse to safeguard against overcurrent conditions. A buck converter steps down voltage to power the control circuitry, supported by a battery backup configuration using two 3.7V Li-ion cells for uninterrupted operation during power anomalies. Local graphical feedback and control are rendered on the ESP32-S3-BOX3 using the LVGL graphics library, enabling users to view power consumption metrics, system states, and manual switch overrides via the onboard switches.