Description

🎤 KY-037 Sound Sensor Module – Detect Sound with Precision! 🔊

The KY-037 Sound Sensor Module is a must-have for sound-responsive electronics. With analog and digital outputs, an adjustable sensitivity knob, and compatibility with both 3.3V and 5V systems, this module makes it easy to integrate sound detection into your next project—whether you’re triggering lights with a clap, detecting noise for security, or visualizing sound levels in real-time.

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🔧 Key Features

✅ Dual Outputs
• Analog Output (AO): Real-time voltage that varies with sound intensity
• Digital Output (DO): HIGH/LOW signal when sound exceeds the set threshold

✅ Adjustable Sensitivity
• Built-in potentiometer allows precise control over sound trigger level

✅ Broad Compatibility
• Works with Arduino, Raspberry Pi, ESP32, and other microcontrollers

✅ Low Power Draw
• Consumes only 4–5mA, making it perfect for battery-powered setups

✅ Compact & Reliable
• Small form factor with a high-sensitivity electret microphone for accurate sound pickup

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📊 Technical Specifications

• Operating Voltage: 3.3V – 5V DC

• Current Consumption: 4–5mA

• Microphone Type: Electret condenser

• Analog Output (AO): 0V to VCC (proportional to sound intensity)

• Digital Output (DO): HIGH/LOW based on threshold

• Dimensions: Compact (may vary slightly by batch)

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🧩 Pin Configuration

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🚀 Applications

• 🎤 Voice-Activated Projects – Clap switches, voice-activated lights

• 🔊 Sound Level Monitoring – Environmental noise logging or alerts

• 🚨 Security Systems – Detect breaking glass or sudden noises

• 🎧 Interactive Art – Trigger lights or effects in installations

• 📟 DIY Robotics & Toys – Respond to sound input for fun automation

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🛠️ How to Use

1. Power the module with 3.3V or 5V and connect GND

2. Connect AO to an analog pin for sound level monitoring

3. Connect DO to a digital pin to detect if noise exceeds the set threshold

4. Adjust the potentiometer to fine-tune sensitivity

5. Read data in your microcontroller code to trigger responses

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💡 Why Choose the KY-037?

• Flexible Outputs for analog and digital use cases

• Quick Calibration with the onboard potentiometer

• Beginner-Friendly: Just plug, adjust, and code

• Perfect for All Projects: From home automation to noise meters

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📦 Package Includes

• 1 × KY-037 Sound Sensor Module