High-Sensitivity Sound Sensor Module | 3.3V-5V Analog & Digital Output
High-Sensitivity Sound Sensor Module | 3.3V-5V Analog & Digital Output
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Short Product Description
Short Product Description
Need reliable sound detection for your next DIY or engineering project? This high-sensitivity sound sensor module features an electret condenser microphone and dual outputs (Analog and Digital) for maximum programming flexibility. Easily adjustable via the built-in potentiometer, it’s the perfect hardware solution for noise level monitoring, voice-activated switches, and smart home alarms. Compatible with standard microcontrollers, this sensor delivers instant, precise audio triggers to bring your STEM creations to life.
Key Features
Key Features
- High-Sensitivity Microphone: Captures subtle ambient sounds, ensuring your automated projects respond instantly to environmental audio cues.
- Dual Signal Output (AO & DO): Delivers both real-time analog voltage and digital high/low logic, providing maximum flexibility for your code.
- Adjustable Trigger Threshold: Features a built-in potentiometer to easily calibrate sensitivity, preventing false positives from background noise.
- Wide Voltage Compatibility (3V - 5.5V): Works perfectly with both 3.3V and 5V microcontrollers, ensuring safe, direct connections without level shifters.
- Standardized Mounting: Includes a pre-drilled 3mm screw hole, allowing for quick, secure installation in permanent electronic housings.
Full Product Description
Full Product Description
Precision Sound Detection for Your Electronic Projects
Whether you are building a smart home security system or an interactive STEM project, accurate environmental sensing is critical. This Sound Sensor Module is engineered to detect audio intensity in its surroundings, translating sound waves into readable electrical signals for your microcontroller. Utilizing a highly responsive electret condenser microphone, it easily picks up ambient noises, from human speech to handclaps, making it an essential component for any interactive electronic build.
Dual Output Versatility (AO & DO)
Unlike basic sensors that only offer a binary on/off state, this module features dual signal outputs to suit diverse engineering needs. The Analog Output (AO) provides a real-time, continuous voltage signal that directly mirrors the microphone's audio waveform, ideal for granular noise level monitoring. Simultaneously, the Digital Output (DO) delivers a clear High/Low logic level when the sound exceeds a specific limit, perfect for triggering immediate actions like turning on a relay or lighting an LED.
Adjustable Sensitivity for Custom Thresholds
Avoid false alarms caused by background noise. The onboard precision potentiometer allows you to manually calibrate the digital output's threshold. By simply turning the screw, you can fine-tune the exact decibel level required to flip the DO pin, giving you complete control over your project's responsiveness.
Seamless Microcontroller Integration
Designed for broad compatibility, this module operates efficiently on a wide voltage range of 3V to 5.5V DC. This makes it a seamless plug-and-play addition for both 3.3V systems (like Raspberry Pi or ESP32) and standard 5V logic boards (like Arduino Uno). Combined with a standard 3mm mounting hole, integration into custom 3D-printed enclosures or standard chassis is fast and secure.
Technical Specifications
Technical Specifications
- Operating Voltage: 3V – 5.5V DC
- Sensor Type: Electret condenser microphone
- Outputs: Analog (AO) and digital (DO)
- Comparator Chip: LM393 (high stability)
- Sensitivity Adjustment: Onboard potentiometer (W503)
- Dimensions: 3.5 × 1.5 cm
- Mounting Hole Size: 3 mm
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: Can I use this sensor to record voice audio for playback?
A: No, this module is designed for sound detection (measuring the presence or intensity of noise) rather than high-fidelity audio recording. It is best used as a trigger switch.
Q: How do I adjust the sensitivity of the digital output?
A: Use a small flathead screwdriver to gently turn the blue potentiometer on the module. Test the output with your microcontroller until the digital pin triggers at your desired volume level.
Q: Is this module safe to use with a Raspberry Pi?
A: Yes! Because the module supports 3V to 5.5V inputs, you can safely power it using the 3.3V pin on your Raspberry Pi, making the Digital Output (DO) perfectly safe for Pi GPIO pins.
Target Users / Applications
Target Users / Applications
- DIY Electronics Enthusiasts: Building voice-activated lighting or sound-reactive displays.
- STEM Educators & Students: Learning about analog-to-digital conversion and sensor logic.
- Smart Home Hobbyists: Creating custom acoustic security alarms or baby monitors.
