Little Bird
Sound Detection and Microphone Module
This sound detection and microphone module provides both analogue and digital outputs for detecting sound with a microcontroller. The analogue output (AO) de...
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This sound detection and microphone module provides both analogue and digital outputs for detecting sound with a microcontroller. The analogue output (AO) delivers a real-time voltage signal proportional to sound intensity, while the digital output (DO) triggers high or low based on an adjustable threshold set via the on-board potentiometer.
Compatible with Arduino and other 5V microcontrollers, it's a straightforward way to add sound detection or audio-level sensing to your project.
Key Features
- Dual Output – Analogue (AO) for real-time audio level, digital (DO) for threshold detection
- Adjustable Threshold – On-board potentiometer sets the digital trigger level
- High-Sensitivity Microphone – Detects voice, claps, knocks, and ambient sound
- Power Indicator LED – Shows when the module is powered
- Comparator Output LED – Lights up when sound exceeds the set threshold
- 3 mm Mounting Hole – Easy to secure in enclosures and projects
- 5V DC Operation – Standard supply voltage for Arduino and similar boards
Ideal For
- Sound-activated lighting and effects
- Clap or knock detection switches
- Noise-level monitoring
- Arduino and micro:bit audio projects
Jargon buster
Plain-language definitions for the technical terms used above.
- DC
- DC means direct current, where electricity flows in one constant direction, as supplied by batteries, USB ports and many plug-pack power supplies. When a product specifies DC, it runs from a DC supply rather than mains AC, so you need to provide the correct voltage and polarity.
- LED
- A light-emitting diode (LED) is a small electronic component that emits light when current flows through it in the correct direction. Because it only conducts one way, its polarity matters, and a through-hole LED must be soldered the correct way around to light up.
- microcontroller
- A microcontroller is a small computer on a single chip that runs a stored program and controls connected inputs and outputs such as buttons, sensors, displays and communication interfaces. In a device built around one, it is the part that executes the code and coordinates the device's behaviour.
- potentiometer
- A variable resistor usually turned with a knob or shaft to create an adjustable electrical signal. It is often used for inputs such as volume, brightness or position, so it helps beginners learn how a microcontroller reads changing values.
Find this product in
Audio & Video
Sensors & Input
Project Guides
Step-by-step builds that use this part
Related Tutorials
Free guides on learn.littlebird.com.au
