KY038 Microphone Module for Arduino Wire & Code

Welcome to today's tutorial where I'll guide you through wiring and coding a KY038 Microphone module with an Arduino!
The KY-038 sound sensor is a fundamental tool for sound level detection, featuring an electric condenser microphone.
🔗 Purchase Links from AliExpress here
ARDUINO UNO R3 CLONE: s.click.aliexpress.com/e/_DDV...
ARDUINO MICRO CLONE: s.click.aliexpress.com/e/_De4...
KY038 Microphone module: s.click.aliexpress.com/e/_DDm...
Onboard, you'll find two LEDs-one for power and the other indicating when the sensor reaches a certain sound level.
This module provides two outputs:
• AO (Analog Output): Real-time output voltage signal of the microphone.
• DO (Digital Output): Switches high when sound intensity reaches a set threshold.
You can fine-tune the sensitivity using the potentiometer on the module.
📺 Explore more electronics tutorials in this playlist:
• Electronics & Projects
🔔 Subscribe to the channel and hit the notification bell to stay updated with the latest Electronics videos and tutorials!
/ @scottydiy
🔗 Check out Josephine's channel for her content: / @josephine5766
🔖 Tags: #arduino #KY038 #electronics #tutorial
🔍 Key Terms: arduino, arduino ide, arduino uno, esp8266, arduino bluetooth, arduino board, arduino display, arduino due, arduino joystick, arduino kit, arduino lcd display, arduino lcd i2c, arduino led, arduino leonardo, arduino mega, arduino mega 2560, arduino micro, arduino mini, arduino pro micro, arduino pro mini, arduino programming, arduino projects, arduino relay, arduino robot, arduino sensors, arduino servo, arduino set, arduino shield, arduino starter kit, arduino stepper motor, arduino temperature sensor, arduino uno r3, arduino wifi, atmega2560, atmega328, atmega328p, ch340, dht11 arduino, ds18b20 arduino, esp32 arduino, esp8266 arduino, i2c arduino, lcd 16 x 2, lcd arduino, mpu6050, nodemcu esp8266, rfid arduino, servo motor arduino, ssd1306, teensy, tinkercad arduino, ultrasonic sensor arduino

[@Enigma758]

It looks like the circuit is pretty simple and only consists of a comparator with the pot acting as a voltage divider reference and that drives the digital output. However, for the analog output, there does not appear to be any amplification and the electret microphones put out a very low signal, so is the analog output coming directly from the mic with no amplification?

[@DavidKHill]

It would be so nice if the code was visible to read as you talk to it. I tried large screen and PC TH-cam settings and still had a very difficult time reading it during the presentation. Also, would be nice if we had a place to download the code to follow along.

[@FreddotheWheelchairGuy]

Agreed. Would have been so handy to copy the code

[@Trix8574]

Hey, I was wondering If you could help me find the problem with my microphone. I have a feeling its the microphone because I have tried every bit of code and I have yet to fix my microphone output.

[@FreddotheWheelchairGuy]

Can you upload a link to the code please? It seems simple enough but I'm just a beginner. Thanks

[@aimzero_9489]

Please send me the code