sudomod

This is my first GBZ, and it was working great! Now, my audio has stopped working (it was working fine), and I can't figure it out. I thought maybe one of my kids messed around with the audio settings, but I formatted the sd card and started fresh, and I still have the same problem. (I admit, I don't know anything about what the audio setup should look like, but again, I had it working before, and it's odd that it just stopped.) I get the familiar error message, "VolumeControl::init() – Failed to find mixer elements!" I've read tons of posts, both here and on other Pi forums. I've checked my wiring and tried to make sure there are no solder splatters. I've disabled digital volume and verified it with minicom. I setup the USB Audio as the default sound output device per tinkerBoy's instructions here: https://www.tinkerboy.xyz/setting-up-us ... nd-output/ I added "dtoverlay=pwm-2chan,pin=18,func=2,pin2=13,func2=4" to the end of my config.txt file per instructions here: https://www.tinkerboy.xyz/failed-to-fin ... -elements/ (I still get the same message.)
I got nothing. If anyone can help, I'd appreciate it. Here's a picture if it helps. Thanks again for any direction you guys can provide!

Remove this from the config.txt

dtoverlay=pwm-2chan,pin=18,func=2,pin2=13,func2=4

That is ONLY used for pwm audio. Tinkerboy uses USB so it is not necessary.

Also. Let's see some nice clear pics of the D+ and D- on the pi and pcb. Do you have a multimeter? Check to see if there is continuity between D+ and D-.

Also. The IN/OUT/GND to the volume wheel, the GND wire does not look like it is soldered at all. Is it?

rodocop wrote: ↑

Sat Dec 22, 2018 2:29 pm

Remove this from the config.txt

dtoverlay=pwm-2chan,pin=18,func=2,pin2=13,func2=4

That is ONLY used for pwm audio. Tinkerboy uses USB so it is not necessary.

Also. Let's see some nice clear pics of the D+ and D- on the pi and pcb. Do you have a multimeter? Check to see if there is continuity between D+ and D-.

Thanks for the reply! I removed the addition to my config.txt, and the volume wheel GND was soldered, but it didn't come through the hole. I added some solder there.
Here are some pictures of the D+ and D-. Tested for continuity, and it seems fine.

Here's another bizarre little detail. I usually use a Mac, but I plugged the Pi into my PC to check something out, and the sound from the PC played through the speaker in my GBZ. Wouldn't everything have to be wired correctly for that to happen? Could this be a software/setting thing?

Well, I basically rewired everything and reflashed the sd card, and it works beautifully now. Pumped to complete my first GBZ (I may add L and R buttons). Already planning #2! Thanks, rodocop for your help!