How To: I2S

I have create two Git repositorys to teach myself how to use I2S on Teensy and ESP32 microcontrollers. You may find that helpful in exploring I2S yourself. On both controllers I am using I2S microphones for audio in and an I2S amp for audio out. With the Teensy I am also demonstrating how it can be turned into a USB audio device.

The I2S microphone is an INMP441 based break out board. The I2S amp is a MAX98357A based break out board. Both can be purchased relatively cheap.

Here are the links to the respective repositories:

• I2S on Teensy 4.1, see https://gitlab.com/hzahnlei/how-to-teensy4.1-i2s
• I2S on ESP32, see https://gitlab.com/hzahnlei/how-to-esp32-i2s

Disclaimer

This is a non-profit, free and open source project. The information on this web site and the documents downloadable from here have been carefully reviewed and is believed to be reliable, but I do not assume any liability arising out of the application or use of any documents, programs or circuit described herein. Furthermore I want to declare that I'm not responsible in any way for the content of other web pages, books and other sources I'm refering to.

• 2021
• i2s
• teensy
• esp32
• digital audio
• audio