KY-037 High Sensitivity Sound Detection Microphone Sensor Module for Arduino
KY-037 High Sensitivity Sound Detection Microphone Sensor Module for Arduino
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Short Product Description
Short Product Description
Unlock the power of sound for your next STEM project or smart home build. The KY-037 High Sensitivity Sound Sensor Module instantly detects audio levels in your environment, transforming acoustic signals into actionable data. Featuring the reliable LM393 comparator chip and dual digital/analog outputs, this module makes it effortless to create voice-activated switches, clap-sensors, or interactive sound-light alarms.
Key Features
Key Features
- Dual Signal Output: Provides both Analog (AO) for real-time sound waveforms and Digital (DO) for simple threshold-based triggers, maximizing compatibility with various microcontrollers.
- Adjustable Sensitivity: Built-in multi-turn potentiometer allows you to precisely dial in the sound detection threshold, preventing false alarms from background noise.
- Industry-Standard LM393 Chip: Guarantees stable, fast-switching digital signals for reliable logic control.
- Visual Status Indicators: Integrated LEDs for power and signal output provide instant visual feedback, streamlining the debugging process during assembly.
- Easy Mounting: Features a pre-drilled 3mm positioning hole, making it simple to secure the module to your chassis or breadboard setup.
- Wide Microcontroller Compatibility: Operates seamlessly on standard 5V DC power, making it a plug-and-play solution for Arduino, Raspberry Pi, ESP32, and PIC platforms.
Full Product Description
Full Product Description
Empower Your Projects with Smart Sound Detection
Whether you are prototyping a smart home security system or building an interactive robotics project, accurate environmental sensing is critical. The KY-037 microphone sensor module acts as the "ears" of your microcontroller, engineered to pick up ambient noise and translate it into a readable electronic signal.
Built with a highly sensitive electret condenser microphone, it is designed for rapid response. It detects sound waves up to 0.5 meters away, making it the perfect component for localized audio triggers.
Dual Output Flexibility (Digital & Analog)
This module doesn't just limit you to a simple on/off switch. It features a versatile 4-pin interface that provides both digital (DO) and analog (AO) outputs:
- Digital Output (DO): Outputs a simple high/low signal when the sound volume crosses a specific threshold. Perfect for triggering relays, LEDs, or simple microcontroller interrupts.
- Analog Output (AO): Provides a real-time voltage representation of the microphone's audio signal, allowing you to measure sound intensity variations dynamically.
Precision Control with Onboard Potentiometer
Stop guessing and start tuning. The integrated VR1 potentiometer allows you to fine-tune the digital output's threshold sensitivity. A simple twist with a screwdriver lets you calibrate the sensor to ignore background hums and only trigger upon distinct noises, such as a handclap or a breaking glass sound.
Reliable LM393 Comparator Architecture
At the heart of the KY-037 is the industry-standard LM393 comparator chip. This ensures the digital output signal is crisp, stable, and free from the jitter that plagues lower-quality sensors. Coupled with built-in LED indicators for power and digital output status, troubleshooting your circuit board logic has never been easier.
Technical Specifications
Technical Specifications
- Main chip: LM393 comparator.
- Sensor type: Electret condenser microphone.
- Operating voltage: DC 4V to 6V, with 5V recommended.
- Outputs: Analog (AO) and Digital (DO).
- Maximum induction distance: About 0.5 meters.
- Dimensions: Approximately 34.6mm x 15mm.
- Mounting hole: 3mm.
- Pin configuration: AO, GND (G), VCC (+), DO.
Delivery Options
Delivery Options
- Local delivery within Hong Kong and in-store pickup.
- Free shipping for orders of HK$400 or above; HK$35 shipping fee for orders below HK$400.
- Shipped by SF Express, usually dispatched the same day for orders confirmed before 6:00 PM (Mon–Sat).
- Estimated delivery time: 1–3 business days after dispatch (Hong Kong).
- In-store pickup details (location and time) will be confirmed by email or phone message.
- Delivery times are estimates and may be affected by weather or unforeseen circumstances.
FAQ Section
FAQ Section
Q: How do I adjust the sensitivity of the sound sensor?
A: You can easily adjust the sensitivity by turning the blue potentiometer (VR1) on the module with a small flathead screwdriver. Turning it adjusts the threshold at which the Digital Output (DO) switches from HIGH to LOW. The onboard signal LED will light up when the threshold is met, helping you calibrate it perfectly.
Q: Can I use this sensor to record high-quality audio or voice?
A: No, the KY-037 is designed for sound detection (measuring volume intensity and triggering switches) rather than high-fidelity audio recording. The Analog Output (AO) provides a voltage envelope of the sound, which is great for visualizing volume levels but not for reproducing clear speech or music.
Target Users / Applications
Target Users / Applications
- STEM Students & Educators: Excellent for teaching basic electronics, analog vs. digital signals, and interactive programming.
- DIY Electronics Enthusiasts: Ideal for creating sound-activated lights, smart home triggers, or robotics automation.
- Hardware Engineers & Prototypers: Useful for developing proof-of-concept environmental monitoring systems or acoustic alarms.
