Description
The KY-038 Sound Detection Sensor Module is a compact, cost-effective solution for detecting sound levels in your environment. Ideal for Arduino, Raspberry Pi, and other microcontroller platforms, this module allows your projects to respond to voice, claps, or other audio signals.
Featuring both analog and digital outputs, the KY-038 is perfect for noise-activated switches, voice control experiments, and sound-sensitive interactive electronics.
- Module: KY-038
- Function: Sound detection using electret microphone
- Output Type: Analog (AO) & Digital (DO)
- Operating Voltage: 3.3V – 5V
- 4-Pin Interface: VCC, GND, AO (analog), DO (digital)
- Sensitivity: Adjustable via onboard potentiometer
- Module Size: Approx. 32mm x 17mm
Key Features:
- Module: KY-038
- Function: Detects sound/noise levels
- Outputs:
- Analog (AO) for sound level measurement
- Digital (DO) when sound exceeds set threshold
- Voltage: 3.3V – 5V
- Interface: VCC, GND, AO, DO
- Onboard potentiometer to adjust digital threshold
- Breadboard-friendly and microcontroller-compatible
What’s Included:
- 1x KY-038 Sound Detection Sensor Module
Great For:
- Clap/voice-activated lights or devices
- Sound-triggered alarms
- Audio-reactive LED projects
- Environmental noise sensing
- STEM audio experiments
- Entry-level electronics and prototyping
Usage Tips:
- Use analogRead() on AO to monitor changing sound levels
- Use digitalRead() on DO to detect when a noise crosses the set threshold
- Turn the onboard potentiometer to adjust sensitivity for your environment
- Works best in relatively quiet spaces to isolate sound events
- Combine with relays or output modules for smart, sound-activated systems
