Raspberry Pi boards are capable of recording stereo audio using an interface called the inter-IC sound (I2S or I2S) bus. The I2S standard uses three wires to record data, keep track of timing (clock), and determine whether an input/output is in the left channel or right channel [read more on I2S here and here]. First, the Raspberry Pi (RPi) needs to be prepped for I2S communication by creating/enabling an audio port in the RPi OS system. This audio port will then be used to communicate with MEMS microphones and consequently record mono audio.

Ref: https://learn.adafruit.com/adafruit-i2s-mems-microphone-breakout/raspberry-pi-wiring-test

Thing is here is the most updated lines 2025

Go here for more awesome stuff and subscribe here and make it reach every embedded dev solutions:

https://www.youtube.com/@beastbroak

A Guide by @Antarip Kar

Parts List

The parts list for this tutorial is fairly simple, requiring only two main components: an I2S MEMS microphone and a Raspberry Pi board.

• 1x Raspberry Pi Zero 2W
• 1x INMP441 MEMS Microphones
• 1x Mini Breadboard
• Male-to-Male Jumper Wires
• Male-to-Female Jumper Wires

Wiring to Raspberry Pi

Notes:

• L/R Pin on INMP441:
  • Connect L/R to GND for left channel.
  • Connect L/R to 3V3 for right channel.
• This setup assumes you are capturing mono I2S input.

1. First update your PI

sudo apt-get -y update
sudo apt-get -y upgrade
sudo reboot