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मूल्य सूची: Retail Price (B2C) मूल्य सूची
मूल्य सूची: Retail Price (B2C) मूल्य सूची
Sound Detection Module Sensor for Intelligent Vehicle Compatible With Arduino

Sound Detection Module Sensor for Intelligent Vehicle Compatible With Arduino

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SpecificationDetails
Operating VoltageDC 3.3V – 5.0V
Sensor ComponentElectret Condenser Microphone
Comparator ICLM393 Dual Voltage Comparator
Output TypeDigital (High/Low) and Analog (AO)
SensitivityAdjustable via Multi-turn Potentiometer
Current Consumption~4mA to 5mA
Dimensions32mm x 17mm
Price
₹ 50.85 ₹ 50.85
(Tax included)

बारकोड: 41584198

Product Description

The LM393 Sound Sensor Module provides a bridge between the physical world of acoustics and digital microcontrollers. The onboard microphone converts sound waves into tiny electrical signals, which are then amplified and compared against a reference voltage set by the potentiometer. The Digital Output (DO) stays HIGH under quiet conditions and pulses LOW when a sound is detected. Additionally, the Analog Output (AO) provides a real-time voltage signal corresponding to the sound's amplitude, allowing for more complex audio processing or volume-level metering with an ADC-capable microcontroller like an Arduino.

Key Features

  • Dual Output Capability: Provides both a triggered Digital signal and a raw Analog audio signal.

  • Adjustable Threshold: Fine-tune the "trigger" point using the onboard potentiometer to ignore background hum.

  • LED Indicators: Features a Power LED and a Signal Status LED that lights up when sound is detected.

  • Wide Voltage Range: Operates safely on both 3.3V (Raspberry Pi/ESP32) and 5V (Arduino) logic levels.

  • Easy Mounting: Includes a 3mm bolt hole for secure installation on robot chassis or frames.

Technical Details

  • Pinout: VCC (3.3V-5V), GND, DO (Digital Output), AO (Analog Output).

  • Signal Logic: DO is LOW when sound is detected; HIGH when quiet.

  • Detection Frequency: Optimized for human voice and sharp percussive sounds (claps, knocks).

Prototyping and Engineering Tips from Robogears

  • The Sensitivity Sweet Spot: To calibrate the sensor, stay in a quiet room and turn the potentiometer until the "Signal LED" just turns off. Then, test it by clapping. If the LED flickers with background noise, turn the pot slightly back to desensitize it.

  • Handling "Clap" Logic: When writing code for a "Clap Switch," remember that a single clap produces a series of rapid pulses, not just one. Use a "debounce" or a small delay in your code (100ms to 200ms) to prevent one clap from being counted as multiple triggers.

  • Analog vs. Digital: Use the DO pin for simple tasks like starting a motor when a whistle is heard. Use the AO pin connected to an Arduino Analog pin if you want to create a "Music Visualizer" or measure how loud a room is in Decibels.

  • Vibration Isolation: Microphones are sensitive to mechanical vibrations. If mounting this on a robot with loud motors, use a small piece of foam or a rubber spacer between the sensor and the chassis to prevent motor vibrations from being detected as "sound."

Package Includes

  • 1 x LM393 Sound Detection Sensor Module

Disclaimer

This sensor is designed for sound detection (presence of noise), not for high-fidelity sound recording. The frequency response is limited and not suitable for capturing high-quality music or speech for storage. Ensure the microphone element is not covered or obstructed for maximum sensitivity.