KY-037 Microphone sound detection module

Item number 56249 Share
KY-037 Microphone sound detection module



Description

The KY-037 Microphone sound detection module detects loud sounds like slamming doors. The module has an analog and digital output so the sensor can be ready by any microcontroller.

Specifications:
Power supply voltage: +5V
Power On LED light: LED1
Electret Condenser Microphone (ECM) sensor
AO = analog output provides a real-time output voltage signal of the microphone
DO = Digital output, output goes high when the intensity of the sound reaches threshold
Comparator Circuit: LM393
Comparator Output LED: LED2, on when sound reaches threshold
Built in potentiometer can be used to adjust the DO threshold level
Mounting screw hole size: 3mm
Circuit Board Dimensions: 35mm x 15mm x 14mm (L x W x H, excluding connector and microphone)

Operation:
Pin + to +5VDC
Pin - to Ground
Pin AO to Microcontroller Analog Input (for analog program)
Pin DO to Microcontroller Digital Input (for digital program)
LED1 will illuminate when power is applied
Turn potentiometer counter-clockwise until LED2 turns off. This is the sound threshold. Then adjust to the appropriate threshold for your application.

NOTE: The electret microphone in this module is not extremely sensitive. It is designed to detect loud noises (slamming doors, glass breaking, dogs barking, doorbells, alarms, buzzers, etc.). It is not appropriate for detecting low levels sounds such as voice conversations.
€ 1,95€ 1,65 Excl. VAT (NL)
Out of stock
Show volume discounts Shipped from € 3,50 (NL) 30 days cooling-off Excellent service

Alternative products

Customer questions

Customer Reviews

The Netherlands
Works well, as expected. Snel in huis
Good
Placed on 
The Netherlands
Works well, as expected.
Works well and received quickly
Placed on 
The Netherlands
No amplification signal Do not measure noise level but offset signal Impossible turning resistance where you don't feel where you are in the range. Microphone breaks easily
This module is pretty stupidly set up. The rotary resistor shifts the 0-line of the analog signal from 0 to 5V and thus from 0 to 1023 (in case of reading on an analog Arduino port). The trigger pin does not look at the strength of the signal in any way, but at the offset from the center: 2.5V. So you can turn your signal to 2.6V in complete silence and then it will turn on. The analog signal is minimally usable due to its very small amplitude. When shouting you get about 0.15V, digitally about 30 of the 511 (half range), so your signal is only about 5-bit accurate. I would like to receive a tip for an alternative that does amplify and looks at the amplitude.
Placed on 
1
Opencircuit
We are sorry to hear that the module is not to your liking! Have you already looked at the advanced version of Sparkfun? https://opencircuit.nl/product/SparkFun-Geluids-sensor-met-Headers
Placed on 
KY-037 Microphone sound detection module Click a star to leave your review

Suggested products

Recently viewed items

Webwinkelkeur Kiyoh Trustpilot Opencircuit