Usually included with the module, but some circuits use an external earpiece or computer microphone.
LEDs, relays (for high-power appliances), or a buzzer to confirm commands. Voice Recognition System Circuit Diagram
Once a match is found, the module sends a specific Command ID (e.g., "1" for "Lights On") over the TX pin to the Arduino, which then triggers a relay or LED. 4. Setup and Training Usually included with the module, but some circuits
The microphone picks up analog sound waves and converts them into electrical signals. Usually included with the module
You typically enter a learning mode via software or a button on the module. You repeat the command word multiple times (usually 3) until the module confirms success.
Before the circuit can recognize your voice, it must be trained:
