Fermion: MEMS Microphone Module - S15OT421 (Breakout)

Analog MEMS microphone breakout based on the S15OT421, with 66× amplifier gain, 1.5 V DC bias output, and 3.3 V/5 V compatibility for MCU ADC sampling.

Logical pinout · physical placement not verified

VCC
Type · Power
GND
Type · Ground
OUT
Type · Signal

Pin	Type
VCC	Power
GND	Ground
OUT	Signal

Logical pinout · physical placement not verified

Pin details

3 connections

VCC
Power
GND
Ground
OUT
Signal

Start wiring

I2S · Analog · 3.3 – 5 V · Breakout

Adafruit/Pimoroni list the electret microphone amplifier as a MAX4466-based board with 2.4–5 V DC supply, rail-to-rail analog output and …

Module pins: VCC, GND, OUT. Schematik maps them to your board in the app.

Microphones

16 other options

MAX4466 and MAX9814 electret preamp breakouts for analog audio, I2S MEMS mics (ICS-43434, SPH0645LM4H, INMP441) for digital audio, PDM breakouts, ReSpeaker arrays for far-field pickup, and an LM386 sound detector.

View all 16

Related groups

4 groups

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Buzzers & speakers

Passive speakers from 1 W to 20 W (4–8 Ω), piezo buzzers active and passive, bone-conductor and surface transducers, and a BOSON buzzer module — all need a matching driver circuit or amplifier.

Audio · Buzzers & speakers · 23 parts

Amplifiers

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Audio · Audio amplifiers · 15 parts

3D printing

DFRobot 1.75 mm PLA in 1 kg spools makes up the bulk of the group, in over 15 colors. Specialty options include PVA in both diameters, NinjaFlex flexible filament, Proto-Pasta conductive PLA, and wood-fill. OverLord printer spares and OverLord printers round out the hardware side.

Tools & prototyping · 3D printing · 53 parts