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Using the ADC8x with the DAC8x
To use the ADC8x add-on with the DAC8x, you don’t need to change your configuration. However, there’s a driver change that has been integrated into the Linux kernel not before mid of February 2025. If you’re using an older installation, it’s possible that your system won’t detect the ADC add-on. You can check this using the aplay and arecord commands:
$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: sndrpihifiberry [snd_rpi_hifiberry_dac8x],
device 0: HiFiBerry DAC8xADC8x ...
Subdevices: 1/1
Subdevice #0: subdevice #0
matuschd@dacadc8x:~ $ arecord -l
**** List of CAPTURE Hardware Devices ****
card 0: sndrpihifiberry [snd_rpi_hifiberry_dac8x],
device 0: HiFiBerry DAC8xADC8x ...
Subdevices: 1/1
Subdevice #0: subdevice #0If arecord doesn’t list the input, you are probably still using an older Linux kernel. Please update your kernel by running:
sudo rpi-update
When this is finished, reboot and check again. Now the ADC input should be available.
March 13, 2025
