MAX9814 Microphone Amplifier
Microphone amplifier with automatic gain control for audio sensing.
AI Ready Overview
Quick Summary
MAX9814 is a microphone module commonly used in FYP and embedded projects. It is best for audio amplitude sensing and sound event detection, with wiring and testing planned around Arduino, ESP32, Raspberry Pi Pico.
Difficulty
Intermediate
Time Required
1-2 weeks for wiring, basic code, platform integration and repeated test readings
Cost
RM8-RM25 module range in Malaysia; full project cost depends on scope.
Components
MAX9814, Arduino, ESP32, Raspberry Pi Pico
Overview
What is MAX9814?
MAX9814 microphone amplifier modules provide an analog audio signal with automatic gain control. They are useful for sound-level prototypes and audio-triggered projects.
Engineering Reference
Quick Specs
| Operating Voltage | 2.7V-5.5V |
|---|---|
| Interface | Analog |
| Difficulty | Intermediate |
| Typical Malaysia Price | RM8-RM25 |
| Best For | Audio amplitude sensing, Sound event detection |
Real Usage Notes
Suitable / Not Suitable
Suitable for
- ✓ Audio amplitude sensing
- ✓ Sound event detection
- ✓ Noise trend logging
Not suitable for
- ✕ Speech recognition alone
- ✕ Certified dB meter
- ✕ Noisy power rails
Build Planning
Difficulty
MAX9814 is rated Intermediate. Plan around 1-2 weeks for wiring, basic code, platform integration and repeated test readingsdepending on wiring, libraries, calibration, dashboard/app integration and testing evidence.
Build Planning
Time Required
1-2 weeks for wiring, basic code, platform integration and repeated test readings
Malaysia Price Guidance
Cost
Typical module price range: RM8-RM25. This is component guidance only; a complete FYP cost depends on controller, sensors, casing, display, app/dashboard, documentation and timeline.
Connections
Connection overview
Power
Use only a supply supported by the exact board or module variant. Common listings for this part mention 2.7V-5.5V.
Ground
Connect a common ground between the controller, module and any external supply.
Primary interface
Plan for Analog; confirm the exact terminal names in the manufacturer documentation.
Variant-specific connections
Connector names and optional pins can differ between breakout-board revisions.
Platform Notes
Wiring Guides
MAX9814 with Arduino / ESP32
This is a planning overview, not a board-specific pin map. Confirm the exact module revision, supply limits and Analog terminals in its datasheet before wiring. Use suitable level shifting when logic voltages differ.
| Power | Confirm against the exact board; listed variants commonly use 2.7V-5.5V |
|---|---|
| Ground | Common ground with the controller |
| Interface | Analog (exact pins vary by module) |
Fix Common Problems
Troubleshooting
Troubleshooting
Common Mistakes
FYP Ideas Using MAX9814
Related Projects
Compare Options
Alternative Components
Student Questions
FAQ
Is MAX9814 good for FYP projects?
Yes, MAX9814 is suitable for FYP work when the project matches its limits: Audio amplitude sensing and Sound event detection.
What is the most common MAX9814 mistake?
Sampling too slowly