Voice Activated Home Automation System For Bedridden Patients

The Voice Activated Home Automation System leverages the connectivity of the ESP32 DevKit v1 board to bridge cloud-based voice services with physical hardware actuators and loads. When a user speaks a voice command into a wireless headset or smartphone, a cloud automation platform such as Google Assistant processes the audio input. Through integration services like IFTTT, these recognized voice commands trigger specific virtual pins or webhooks configured in the Blynk app. The ESP32 board, connected to the local Wi-Fi network, constantly communicates with the Blynk cloud to monitor the state of these virtual pins. Upon receiving a state change command, the ESP32 outputs corresponding control signals from its general-purpose input/output (GPIO) pins. For electrical appliances such as lights, fans, televisions, or air conditioners, the ESP32's digital output signals drive a 5V relay or a 3-channel relay module. These relays act as electrically operated switches that isolate the low-voltage DC control circuit of the microcontroller from high-voltage AC mains appliances safely. For physical adjustments, such as modifying bed positions, the ESP32 generates Pulse Width Modulation (PWM) or control signals to actuate a servo motor. The servo motor translates these electrical signals into mechanical movement, allowing bedridden patients or individuals with limited mobility to effortlessly control their environment using simple voice inputs.