KY-038 Sound Control Sensing Small Switch Microphone Module

KY-038 microphone module is used to convert audio signal to digital or analog signal.

This module has a condenser microphone and an op amp that receives the audio signal and puts the analog signal on the AO pin and the digital signal on the DO pin, and the DO output is for when the intensity is It is activated when the sound reaches a certain threshold. In this case, you can set the threshold value using the multitrain on the module.

KY-038 module can be easily connected to control boards such as Arduino and Raspberry Pi due to its design and analog and digital output. The digital output pin is activated when the audio input exceeds a value that can be adjusted by a multi-train on the board. It has two indicator LEDs L1, L2, one LED lights up when the voltage is connected and the module is started, and the other LED lights up when the sound of the microphone increases and it reaches the set value.

DIY projects

Audio equipment

Model: KY-038

Required voltage: 5~3.3V

Microphone type: condenser

Op amp: LM393

Fixed gain: 20dB

Frequency range: 100 ~ 10000 Hz

Dimensions: 15 x 35 mm

Mounting holes: 3 mm

High sensitivity

AO: analog output, real-time output of microphone voltage signal

Do: Generate high and low level signals when the sound intensity reaches a certain threshold. (The sensitivity of the threshold can be adjusted with a potentiometer)