Speechless Home Automation with ESP32-S3 Box 3

The Speechless Home Automation system centers around the ESP32-S3 Box 3 development board, which features an integrated microphone and touchscreen display. Instead of relying on traditional voice recognition software that processes spoken words, the system's custom audio processing routines analyze non-verbal sounds such as distinct taps, clicks, and specific acoustic tones captured through the built-in microphone. When a valid non-verbal sound pattern is recognized, the microcontroller evaluates the input against programmed command thresholds. Depending on the matched sound profile, the ESP32-S3 interacts with the GPIO Dock to trigger specific output actions. For low-voltage direct current applications, a MOSFET trigger switch allows the microcontroller to safely control a DC motor or fan by modulating current flow without drawing excessive power directly from the GPIO pins. For high-voltage alternating current applications, a relay module is utilized to switch a 220V AC bulb. The relay provides essential electrical isolation, separating the low-voltage logic circuitry of the ESP32-S3 from the dangerous mains voltage. Additionally, the touchscreen display provides a visual interface for system feedback, status monitoring, and supplementary manual controls, while software mechanisms like mutex locking ensure that audio processing and hardware control paths operate reliably without conflicting concurrency issues.