ljudsensor, compatible with Arduino

Waveshare sound sensor very good quality with the guide of how to connect. 

Overview

• Onboard audio power amplifier LM386
• Audio signal gain up to 200
• Adjustable accuracy
• Signal output indicator

Specifications

• Mic sensitivity : 52dB
• Frequency range : 50Hz ~ 20KHz
• Power: 3.3V ~ 5.3V
• Mounting holes size: 2.0mm

Applications

• Audio amplifier
• Ambient sound detection
• Sound level detection (unable to get exact dB value)

How to Use

In the case of working with a MCU:

• VCC ↔ 3.3V ~ 5.3V
• GND ↔ power supply ground
• AOUT ↔ MCU.IO (analog output)
• DOUT ↔ MCU.IO (digital output

Development Resources

Wiki : www.waveshare.com/wiki/Sound_Sensor