Pi Zero 2 W hangs with Dynaudio sound card

[SchroedersKater]

Hi All,

I used a Dynaudio sound card for my wireless Dynaudio speakers on a Pi 3 B+. There it worked great. Now I tried to switch to a Pi Zero W 2, but when I plug the card in, the moOde player hangs after a short while. Same when I try to scan for the Dynaudio or produce log files.

moOde version is 9.3.7.

Has someone an idea?

[TheOldPresbyope]

Hi All,

I used a Dynaudio sound card for my wireless Dynaudio speakers on a Pi 3 B+. There it worked great. Now I tried to switch to a Pi Zero W 2, but when I plug the card in, the moOde player hangs after a short while. Same when I try to scan for the Dynaudio or produce log files.

moOde version is 9.3.7.

Has someone an idea?

I, for one, have no idea what a "Dynaudio sound card" is.

What is it, how is it powered, how does it "plug in", what does it mean to "scan for" it? For that matter, what specifically does "the moOde player hangs after a while" mean?

I've experienced no essential differences between a Pi Zero 2W and a Pi 3B+ when using either I2S DAC Hats or USB DACs. The one thing I do religiously is make sure each combo has adequate power from a reputable supply.

Regards,
Kent

[SchroedersKater]

I, for one, have no idea what a "Dynaudio sound card" is.

What is it, how is it powered, how does it "plug in", what does it mean to "scan for" it? For that matter, what specifically does "the moOde player hangs after a while" mean?

This is a box with a USB connector that acts as an interface between a computer and the wireless Dynaudio speakers. Dynaudio calls it Transmitter. A PC or Mac recognises it as a sound card when plugged into a USB. "Scan for it" means to use the corresponding button on the audio page of the moOde UI to find all peripheral devices. When plugged in, the moOde player tries to connect with the box (what an LED on the box shows). After that the WiFi connection gets lost and moOde cannot be accessed any more.

I've experienced no essential differences between a Pi Zero 2W and a Pi 3B+ when using either I2S DAC Hats or USB DACs. The one thing I do religiously is make sure each combo has adequate power from a reputable supply.

The power supply is sufficient. I also powered the box from a separate power supply to make sure that there is enough power ("just in case ..."). The specs tell that the Zero has enough power on the USB for the box.

BTW, I tried with the running system from my Pi 3 B+ as well with a new installation.

HTH

[TheOldPresbyope]

!@SchroedersKater

When plugged in, the moOde player tries to connect with the box (what an LED on the box shows). After that the WiFi connection gets lost and moOde cannot be accessed any more.

Very strange. 

Were you also using a WiFi connection when you were using this device with moOde on a Pi 3B+?

Regards,
Kent

[SchroedersKater]

Were you also using a WiFi connection when you were using this device with moOde on a Pi 3B+?

Yes, I was using both, WiFi and Ethernet. I totally agree, it's strange. Are there important differences between the USBs of the Pi 3 b+ and the Pi Zero W 2?

[TheOldPresbyope]

Were you also using a WiFi connection when you were using this device with moOde on a Pi 3B+?

Yes, I was using both, WiFi and Ethernet. I totally agree, it's strange. Are there important differences between the USBs of the Pi 3 b+ and the Pi Zero W 2?

There are differences, sure. Notably, the Pi Zero W 2 (aka 2W) doesn't have a current-limiting circuit for its USB port if I read the docs correctly. I don't see how that relates to your problem, though.

I suppose it's possible that the Dynaudio USB port serves other functions besides being an audio sink but I can't come up with a scenario where that would affect the Zero 2W and not the 3B+.

Sorry, I'm out of ideas. If no one else reading this Forum has one, you might try the diyaudio forum.

Regards,
Kent

[kopas]

I would try running everything on a powered hub and see what output you get from an "aplay -l" command on the console.

[SchroedersKater]

I would try running everything on a powered hub and see what output you get from an "aplay -l" command on the console.

Thank you!

I'll try that and inform you. But it'll take a while.