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I2S Audio Shield

by Unexpected Maker

I2S audio amplifier shield for TinyPICO, TinyS2, TinyS3 amd TinyC6.

This shield takes standard I2S digital audio input and decodes it into an analog audio signal as well as amplifying it for use with an external speaker.

View all Unexpected Maker "Tiny" boards!

Features

The I2S Audio Shield brings the noise with:

  • MAX98357 I2S Decoder and Amp
    • 3W Class D Amplifier
    • I2S sample rates from 8kHz to 96kHz
    • Click + Pop suppression
    • Thermal shutdown protection
  • Micro SD Card slot
  • Magnetic buzzer for onboard audio via a PAM8301 amplifier
  • A switch to swap between on-board sound and external speaker that can be connected via provided header
  • Comes with a separate screw terminal that can be soldered on for external speaker connection

Powering the Shield

The components on the shield are powered by the 3V3 header pin, so if you are connecting this shield to another MCU board, please provide 3V3 to that header pin, or the shield will not work.

Using the SD Card

If you are wanting to use the SD Card slot in your project, please ensure you set the SPI MI pin as an INPUT_PULL_HIGH or initialising the slot will fail.

For Arduino:

pinMode(MI_PIN, INPUT_PULLUP);

Knowledge Base

You can find more detailed information about this shield, including a 3D model in the Unexpected Maker Knowledge Base