Microphone

Description

A module that uses a high sensitivity electret microphone to detect sound. Module outputs the analog sound signal, as well as a digital signal that is switched high when the sound level crosses a preset threshold. The threshold is set via the potentiometer.

Also called: sound sensor, big sound, small sound, microphone big, microphone small, microphone sensor, KY037, KY038.

Found in kits: 37 sensors, 45 sensors (larger microphone element).

Found in kits: 20 sensors, 37 sensors, 45 sensors (smaller microphone element).

Specification/Notes:

• Voltage: 3.3V to 5.0V
• LED: Power, detection
• Size: 35mm X 15mm, 3mm mounting hole.
• Analog out – microphone signal.
• Digital out – Adjustable threshold with LED indicator.
• Power LED.
• LM393 comparator, electric condenser microphone.

There are a number of different sources for these modules. Not every module that looks similar to the ones here behaves exactly the same. Check the specific module that you have for differences in function, voltage levels, pinout, and inactive/active states. Some modules have been found to have incorrectly labeled pins and even poorly soldered components.

Module Pin-out:

Image: Typical/common pinout. Always check the pinout for the module that you have.


Image: Typical/common pinout. Always check the pinout for the module that you have.


If you have more information about certain modules, please feel free to Contact us! and share what you know. If you also have test or application code to share, that link is the way to share that - we would appreciate your experiences and input a lot!

If you are interested in purchasing the unique devices that are shown on these pages, CircuitGizmos (link: CircuitGizmosOnline) sells many of these devices. Also Tindie has several of the CircuitGizmos devices for sale.

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Sometimes the 37 sensor projects are described as Instructables. This is the Instructable user to follow: Indestructable and YouTube channel and even follow on Instagram. Link back to us, please! We really like learning how our products are used.

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