Microphone Noise Sensor KY-037

This microphone module lets an Arduino perceive ambient noise, for example for a clap switch or to evaluate knocking signals. The module has an analog and a digital output. The switching threshold of the digital output is set on the rotary potentiometer; when reading analog, the potentiometer sets the base value. It is suitable for loud, sudden noises, not for audio recording or dB measurements.

Recommended alternatives for measuring the sound level or for the audio signal: Gravity Analog Sound Level Meter or MAX4466 Microphone Amplifier Module with Potentiometer

Recommended Accessories:

• Dupont Cable M-F 20cm 20 Pieces

Features:

• LED1: operating voltage present
• LED2: state of the digital output DO
• Multi-turn potentiometer for the threshold

Application Examples:

• Clap switch
• Evaluating knocking signals
• Noise detector

Documentation:

• KY-037 data and example (ArduinoModules)

Technical Data:

• Comparator: LM393
• Outputs: 1× analog, 1× digital
• Pins: AO (analog output), G (GND), + (3.3 to 5 V), DO (digital output)
• Operating voltage: 3.3 to 5 V
• Size: 42 × 15 × 14 mm
• Weight: 4 g

Scope of Delivery:

• 1× Microphone noise sensor KY-037