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AUDIO (Usage on Volumio OS)

This section describes how to use GPIO to drive audio functions on Volumio, laying the foundation for subsequent project development.

AUDIO Operations​

Booting Device​

warning

The default driver device is disabled and needs to be enabled in the settings.

  • Open the option in the top-left corner and select Playback Options

    Smplayer audio configuration

  • Corresponding options: 1: Enable I2S DAC 2: Select IQaudIO DAC Plus 3: Select DSD over PCM (DoP) 4: First save the General Playback options settings 5: Then save the Audio Output settings. The device will reboot after saving

    Smplayer audio configuration

  • After the device reboots, log in via SSH and run aplay -l to verify the device is recognized. 
    aplay -l

    Smplayer audio configuration

Audio Playback​

  • To play local music, you can copy the audio files to a USB drive and connect it, or copy them to the local directory /mnt/INTERNAL/, then reboot the device.
  • After rebooting, select Music

    Smplayer audio configuration

  • Select Music Library

    Smplayer audio configuration

  • In INTERNAL, select the audio from the /mnt/INTERNAL/ directory

    Smplayer audio configuration

Adjust Volume​

  • The default volume is relatively high. 
    sudo alsamixer
  • If the sound card is not set as the default, press F6 to select the sound card device.

    Smplayer audio configuration