Sound module

This small breakout board couples a small microphone with a 100x opamp to amplify the sounds of voice, door knocks, etc loud enough to be picked up by a micro controllers Analog to Digital converter. Unit comes fully assembled as shown.

Arduino microphone sound detection sensor module

High sensitivity

Two outputs: 1. AO, analog output, real-time output of the microphone voltage signal

2. DO, digital output when the sound intensity reaches a threshold

Sensitivity potentiometer adjustable

Use DC 5V power supply

Power indicator LED

Pin layout: 1. Analog 2. Ground 3. + 4. Digital

delay(100);