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KY-038 Sound Sensor
KY-038
sensor sound
The KY-038 is a low-cost microphone sound-detection module. An onboard LM393 comparator produces a digital output (DO) that switches when the sound level crosses a threshold set by the onboard potentiometer, plus a raw analog output (AO) proportional to the microphone signal. Common in clap-switch and noise-detection projects.
In stock
Specifications
5- Operating Voltage
- 3.3 V
- Operating Voltage
- 5 V
- Interface
- Analog + digital (comparator)
- Comparator
- LM393
- Package
- 4 pins
Pinout
4| Pin | Name | Functions | Notes |
|---|---|---|---|
| 1 | AO | ADC | Analog output — raw microphone level |
| 2 | GND | GND | Ground |
| 3 | + | POWER | Supply, 3.3-5V (VCC) |
| 4 | DO | GPIO | Digital output — HIGH/LOW past the potentiometer threshold |
Interactive pinout
Highlight:
KY-038
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