Thanks for the update @CuteSturdio.
I've just connected all the modules together, the SUB-A to C, the Aiyima A07, the speaker, HoneyWell power supply and of course RPI 4 and trying to hear something but can't really hear.
The Moode Audio GUI is working on my android phone as expected, volume is on 50% ...
What Am I missing?
I'm running this on a Pi3B in a Flirc box and the latest 5 series Raspbian kernel, but I would expect the Pi4 to behave the same (but at a slight warmer temperature
).
I'm also feeding it with 'aplay', the ALSA player (controlled via SeeDeClip4, but essentially I'm playing this:
aplay -q --disable-resample --disable-format --device=hw:1,0 mysupermusic.wav
The wav file can be 16 or 24 bit, 44 or 48kHz.
But first we should see if your system recognises the Apple is there. Type lsusb
{wpi:~ 7} lsusb
Bus 001 Device 014: ID 05ac:110a Apple, Inc.
Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp. SMSC9512/9514 Fast Ethernet Adapter
Bus 001 Device 002: ID 0424:9514 Standard Microsystems Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Then try aplay -l (l for list):
{wpi:~ 8} aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: Headphones [bcm2835 Headphones], device 0: bcm2835 Headphones [bcm2835 Headphones]
Subdevices: 8/8
Subdevice #0: subdevice #0
Subdevice #1: subdevice #1
Subdevice #2: subdevice #2
Subdevice #3: subdevice #3
Subdevice #4: subdevice #4
Subdevice #5: subdevice #5
Subdevice #6: subdevice #6
Subdevice #7: subdevice #7
card 1: A [USB-C to 3.5mm Headphone Jack A], device 0: USB Audio [USB Audio]
Subdevices: 0/1
Subdevice #0: subdevice #0
If 'lsusb' works, your adapter and Apple dongle work.
If 'aplay -l' works, everything should work (test with aplay above).
If 'aplay -l' fails to find the card:
Make certain that the 3.5mm stereo headphone jack is plugged in properly
Consider upgrading your Pi to the latest kernel (5).
Use uname -a to see what type it is.
{wpi:~ 9} uname -a
Linux wpi.home
5.10.27-v7+ #1409 SMP Tue Apr 6 18:23:37 BST 2021 armv7l GNU/Linux
{wpi:~ 10}
If necessary, use the following 3 commands
sudo apt-get update
sudo apt-get upgrade
sudo rpi-update
to get the latest kernel.
As always, after the upgrade and rpi-update, it's possibly worth restarting
sync
reboot
Let us know how you get on!