DAC+ Zero volume control

Hi everyone,

I'm using a raspberry pi zero and a Hifiberry DAC+ Zero for agricultural purpose as bird scarer to protect fruit harvest. I succeed to get sound but volume is very very low (although Master volume set to 100%). I have tried to access PCM volume but I haven't been able to access it yet.

The result of aplay -l command is:

**** List of PLAYBACK Hardware Devices ****
card 0: sndrpihifiberry [snd_rpi_hifiberry_dac], device 0: HifiBerry DAC HiFi pcm5102a-hifi-0 [HifiBerry DAC HiFi pcm5102a-hifi-0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

The result of amixer command is :

Simple mixer control 'Master',0
  Capabilities: pvolume pswitch pswitch-joined
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 65536
  Front Left: Playback 65536 [100%] [on]
  Front Right: Playback 65536 [100%] [on]
Simple mixer control 'Capture',0
  Capabilities: cvolume cswitch cswitch-joined
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 65536
  Front Left: Capture 65536 [100%] [on]
  Front Right: Capture 65536 [100%] [on]

However I can't specify the use of card 0 in amixer with the command amixer -c 0. No returns appear. Is there a way to access to PCM controls and increase the volume of the output ?

Many thanks for your help.


1 comment

Please sign in to leave a comment.