A Sound Microphone Detection Sensor Module detects environmental sound intensity using an electret microphone and an LM393 comparator. Key Details

• Voltage: Works at 3.3V to 5V DC.
• Adjustment: Built-in potentiometer changes sound sensitivity thresholds.
• LEDs: Indicators show power status and sound trigger alerts.

Pinout

• VCC: Power input (3.3V – 5V).
• GND: Ground connection.
• DO (Digital Output): Sends a high/low signal when sound crosses the set threshold.
• AO (Analog Output): Sends a continuous voltage signal matching the real-time sound wave.

Common Uses

• Clap switches to toggle lights.
• Security alarms to detect loud knocks or breaks.
• Voice-activated robotics.

Note: This sensor is ideal for detecting sound presence and volume, not for recording high-quality audio or recognizing specific words.