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Introducing the MAX9814 Microphone AGC Amplifier Board – a high‑performance sound sensor module designed for Arduino enthusiasts, hobbyists, and professionals who demand crystal‑clear audio capture with automatic gain control. This compact DIY kit combines the power of the MAX9814 chip with a robust PCB layout, offering a plug‑and‑play solution that outperforms the popular MAX4466 module.
Key Highlights
- Integrated Auto Gain Control (AGC) for consistent audio levels across a wide range of sound intensities.
- Ultra‑low noise floor and high signal‑to‑noise ratio (SNR) for precise sound detection.
- Adjustable sensitivity via onboard potentiometer – fine‑tune to your project’s needs.
- Compact PCB board design fits perfectly on standard Arduino shields and breadboards.
- Compatible with Arduino, Raspberry Pi, ESP32, and other microcontroller platforms.
- Ready‑to‑use DIY kit includes all necessary components and detailed wiring guide.
Why Choose the MAX9814 Over MAX4466?
The MAX9814’s built‑in AGC automatically adapts to varying sound pressures, eliminating the need for manual gain adjustments and preventing clipping in loud environments. Its superior dynamic range and lower distortion make it ideal for voice‑activated projects, audio‑level monitoring, and sound‑reactive installations.
Technical Specifications
- Microphone Type: Electret condenser with built‑in pre‑amplifier
- Operating Voltage: 2.7 V – 5.5 V (5 V recommended)
- Gain Range: 0 dB – +40 dB (auto‑adjusted)
- Output: Analog voltage proportional to sound level
- Supply Current: < 0.5 mA (standby)
- Frequency Response: 20 Hz – 20 kHz
- Signal‑to‑Noise Ratio: ≥ 62 dB
- Package: 2 × 2 cm PCB with 3.5 mm audio jack and 3‑pin header
Ideal Applications
- Voice‑controlled home automation
- Sound‑activated LED or motor projects
- Audio level meters and VU‑meters
- Noise monitoring and environmental sensing
- DIY smart assistants and speech recognition prototypes
- Educational labs and electronics workshops
Easy Integration
Simply connect the 3‑pin header to any Arduino analog input, adjust the potentiometer for desired sensitivity, and start reading sound levels with a few lines of code. The included documentation provides wiring diagrams, sample Arduino sketches, and troubleshooting tips to get you up and running in minutes.
What’s in the Box
- 1 × MAX9814 microphone AGC amplifier board
- 1 × 3.5 mm audio jack connector
- 1 × 3‑pin header for Arduino compatibility
- 1 × adjustable gain potentiometer
- Quick‑start guide and schematic
Upgrade your audio projects with the reliable, low‑noise performance of the MAX9814 Microphone AGC Amplifier Board. Order now and experience hassle‑free sound sensing for every Arduino adventure!
Price: $ 1.66