1 4

Small Microphone Sound Sensor Module (KY-038)

SKU: 3CXHPAKXXA
The KY-038 Small Microphone Sound Sensor Module is a compact audio detection module designed to sense sound levels in the surrounding environment. It features a high-sensitivity electret microphone and an LM393 comparator circuit that converts sound signals into both analog and digital outputs. The module can detect claps, voices, knocks, and other sound events, making it ideal for sound-activated projects,...
Rs. 70.00
Rs. 79.00 Rs. 70.00
Save Rs. 9
Sold out
Tax included. Shipping calculated at checkout.
Guaranteed safe & secure checkout

Shipping & Returns

Orders placed before 3 PM IST will be shipped on the same day (excluding Sundays and Public holidays) through our shipping partners. In rare cases, the pickup may get delayed during Public holidays / Bandh / Environmental disturbances.

Specifications

Specifications:

Module Type: Sound Sensor Module
Model: KY-038
Sensor Element: Electret Microphone
Comparator IC: LM393
Operating Voltage: 3.3V to 5V DC
Operating Current: Less Than 10mA
Output Type: Analog Output (AO) and Digital Output (DO)
Digital Output Logic: TTL Compatible
Sensitivity Adjustment: Onboard Potentiometer
Detection Method: Acoustic Sound Detection
Frequency Response: Audio Frequency Range
Response Time: Fast Response
Indicator LEDs: Power LED and Trigger LED
Interface Pins: VCC, GND, AO, DO
Operating Temperature: -20°C to +70°C
Storage Temperature: -40°C to +85°C
PCB Dimensions: Approximately 34mm × 16mm
Mounting Type: Through-Hole Module
Compatibility: Arduino, ESP32, STM32, Raspberry Pi Pico, AVR, PIC

Additional Resources

Sound Sensor Module.PDF

FAQ

1. What is the KY-038 Sound Sensor Module used for?

The KY-038 is used to detect sound levels and sound events such as claps, knocks, and voices in electronics and automation projects.

2. What outputs does the KY-038 provide?

The module provides both analog and digital outputs, allowing users to measure sound intensity or trigger events when a sound threshold is exceeded.

3. What is the function of the onboard potentiometer?

The potentiometer adjusts the sensitivity and trigger threshold of the digital output, allowing customization for different environments.

4. Can the KY-038 be used with Arduino and ESP32 boards?

Yes, the module is fully compatible with Arduino, ESP32, STM32, Raspberry Pi Pico, and other microcontrollers.

5. What is the difference between the analog and digital outputs?

The analog output provides a varying voltage based on sound intensity, while the digital output changes state when the detected sound exceeds the preset threshold.

View full product details

The KY-038 Small Microphone Sound Sensor Module is a compact audio detection module designed to sense sound levels in the surrounding environment. It features a high-sensitivity electret microphone and an LM393 comparator circuit that converts sound signals into both analog and digital outputs.

The module can detect claps, voices, knocks, and other sound events, making it ideal for sound-activated projects, automation systems, security alarms, robotics, and educational electronics applications. The onboard potentiometer allows users to adjust the sensitivity threshold for the digital output, enabling customization based on the application.

Its simple interface and low power consumption make the KY-038 a popular choice for Arduino, ESP32, STM32, Raspberry Pi Pico, and other microcontroller-based projects.

Key Features

  • High-sensitivity electret microphone
  • Detects environmental sound levels
  • Analog and digital output signals
  • Adjustable sensitivity threshold
  • Built-in LM393 comparator
  • Real-time sound detection
  • Fast response time
  • Compact and lightweight design
  • Onboard power and signal indicator LEDs
  • Low power consumption
  • Easy microcontroller interfacing
  • Compatible with Arduino, ESP32, STM32, and Raspberry Pi
  • Suitable for sound-triggered applications
  • Ideal for educational and DIY electronics projects