LEDs, relays (for high-power appliances), or a buzzer to confirm commands.
The circuit relies on a connection between the voice module and the microcontroller. Voice Module Pin Arduino Pin VCC Power supply (typical 3.3V-5V) GND Common ground RX Pin 3 (Digital) Receives data from Arduino TX Pin 2 (Digital) Transmits voice ID data to Arduino Voice Recognition System Circuit Diagram
Most modern modules use a "wake word" (like "Hello Robot") to listen for commands. LEDs, relays (for high-power appliances), or a buzzer
The microphone picks up analog sound waves and converts them into electrical signals. relays (for high-power appliances)