Description
Specifications:
Model: KY-038
Adopt LM393 main chip
Electric condenser microphone
Features Single channel signal output
Low level output signal used for sound control light
Great module for sound alarm system
Working voltage: DC 4-6V
Interface definition:
AO: analog output sensor
GND: ground
VCC: Power supply input range: 3V-24V.
DO: Digital Output (comparator output)
Two red LED indication: POWER and SENSOR. POWER: Power is off. SENSOR: When the microphone senses sound reaches a certain value, this LED light.
Connecting with Arduino:
- Pin + to Arduino 5+
- Pin – to Arduino –
- Pin A0 to Arduino A0 (for analog program)
- Pin D0 to Arduino 13 (for digital program)
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