No sound — any debugging advice?

[bberstel]

Hi,

I have unpacked my Haxophone today, and first of all: thanks a lot Javier for bringing this brilliant idea to life, and to the rest of us!

I am using a Raspberry Pi Zero W, and the pre-built image. I'm not much of a hardware guy, but I think I have done everything right. (Actually the hardest part was to find a computer with a SD port…) When powered, the Pi boots with no error message (except the one related to swap mentioned in another discussion, and which I understand can be safely ignored).

Yet, when I blow in the Haxophone, I get no sound in my headphones. I have tried the headphones on a CD player: they work.

I must say that I'm a bit clueless. As I wrote, I'm not much of a hardware guy, but I have experience in software. So if there is anything I can try to debug my situation, I'll do it…

Thanks in advance for any help.
Bruno

[jcard0na]

Hi Bruno,

Thanks for the words of support... even if you are getting no sound! Let's try to fix that! 😅

Based on your comment regarding error messages, it seems like you have a console, maybe by plugging a display and keyboard to the Pi? If so, can you log in (user: pi pwd:haxophone) and print the haxo service logs?

journalctl -u haxo 

That should tell us if the service started successfully.

Other useful logs:

aplay -l

Cheers,

[jcard0na]

Oh, wow, this reads like a mystery novel! Thanks for the frequent updates... (and I'm really sorry that this hasn't been a smooth "plug and play" experience for you... 😮‍💨)

Yes, I have one suggestion... if you had a "stuck open key", you could have some notes that work, while others would not. Going over all the fingerings can help identify which stuck open note would produce what you are seeing. For instance, if L2 key was stuck open, C# and B would work, and all notes below G# would not produce a sound.

But C should work. And A would sound as B. The high register (D5 and above) would also work. Can you try comparing A with B, and also check if the high register works?

[bberstel]

Victory!

So I started going through all fingerings, well maybe not all of them, but apparently it did un-stuck the key that was stuck, because everything was working properly.

Here is a link to a short video that proves it: https://vimeo.com/898900694 😄 (You'll hear more the keys and my breathing because I simply put the headset next to the phone, but that's ok for the purpose of this video…)

Thanks a lot Javier for your help through this. We got it solved before the end of the year!

Best, B

[jcard0na]

Sweet, sweet news! I'm so happy that we finally made it work. Thanks a lot for sharing the "proof"!
And just in time for the end of year party celebrations! (I'm in France to spend "le Réveillon" with friends... you gave me one more reason to celebrate tonight!

Cheers,

[jcard0na]

BTW, my father-in-law overheard your recording and said it's Jacques Dutronc, Gentleman Cambrioleur. Is he right?

[bberstel]

Yep, totally right!

Alors je te souhaite un bon réveillon !

Best, B