Logical pinout · physical placement not verified

VDDmodule header
Power supply input
Type · PowerVoltage · 1.8V to 3.3V
GNDmodule header
Ground
Type · GroundVoltage · 0V
SCKmodule header
I2S serial-data clock / bit clock input
Type · SPIVoltage · logic input
WSmodule header
I2S word-select / left-right clock input
Type · SignalVoltage · logic input
SDmodule header
I2S serial data output from microphone
Type · SignalVoltage · logic output
LRmodule header
I2S channel select, low for left channel and high for right channel
Type · ControlVoltage · 0V or VDD

Pin	Position	Type	Function	Voltage
VDD	module header	Power	Power supply input	1.8V to 3.3V
GND	module header	Ground	Ground	0V
SCK	module header	SPI	I2S serial-data clock / bit clock input	logic input
WS	module header	Signal	I2S word-select / left-right clock input	logic input
SD	module header	Signal	I2S serial data output from microphone	logic output
LR	module header	Control	I2S channel select, low for left channel and high for right channel	0V or VDD

Logical pinout · physical placement not verified

Pin details

6 connections

VDD
Power supply input
PowerVoltage · 1.8V to 3.3V
module header
GND
Ground
GroundVoltage · 0V
module header
SCK
I2S serial-data clock / bit clock input
SPIVoltage · logic input
module header
WS
I2S word-select / left-right clock input
SignalVoltage · logic input
module header
SD
I2S serial data output from microphone
SignalVoltage · logic output
module header
LR
I2S channel select, low for left channel and high for right channel
ControlVoltage · 0V or VDD
module header

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: VDD, GND, SCK, WS, SD. 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

Audio boards

Adafruit Audio FX boards and WAV Trigger for standalone playback, DFPlayer Pro and Gravity MP3 for MCU-scripted audio, EasyVR for speech recognition, Fermion/Gravity voice recorders, and Pi I2S DAC/codec boards.

Audio · Audio boards · 51 parts

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

MAX98357A and MAX98357 I2S class-D amps, PAM8403 and TPA2012 analog stereo amps, MAX9744 20W stereo amp, LM386 and PAM8302 mono amps, and discrete op-amp packs for signal-level work.

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

Pinout