Low volume

Hey Helder, I have a v2.2 board with sound issues. When the headphones are in the sound is incredibly loud and when the headphones are out the volume on the speaker is very low, even at max. I was reading through the thread and saw that some resistors may need to be swapped out, is that something you can help me with? I'd be willing to send you the board and compensate you for your time. I just don't lack the skill to replace those resistors yet.

docholiday11x

blameblaine wrote: ↑
Mon May 08, 2017 10:07 pm
@helder

Actually after checking, I do show a 75R0 resistor to the right of my headphone jack. Hmmm, got any other suggestions?

We might have a similar problem. I have the same resistors and I'm getting audio skipping.

It goes away if I go into the mixer and turn down the db for retropie. But then the overall volume is just too low to enjoy, even in a quite room.

jermzz

VeteranGamer wrote: ↑
Fri May 12, 2017 4:23 am

jermzz wrote: ↑
Thu May 11, 2017 10:01 pm

So I did this and problem persists. Although much less, I STILL get choppyness (and freezes) with mono sound. Does this confirm the resistors need to be changed?

if so can you recommend a link to get the right ones? Or if you have some I'll gladly pay them / shipping.

also, in the mean time, how would I wire a dac to the all in one? Havent done usb audio, yet but it sounds like a good idea until I can get this sorted, and I have one on hand. Would I just wire L out and R out to PWM 0 and 1? Or will that cause the same problem?

i was thinking about wiring up usb audio, but i may leave that for another build (fitting a usb device and an amp may be tight in my current build).....

the onboard audio is fine it justs needs the right envioroment (providing the wiring is correct), my aio board originally came with 10ohm resistors, i changed them for 75ohm (still an issue) joined the the two pwm wires together and put a jumper from the resistors to the speaker.... that actually worked or so i though as i had only really been testing without the case closed, once closed the problem arose again, so i shielded the pwm wires, that seemed to have resolved the issue....

but i was wrong.... while my son was playing with it, i actually noticed that tetris sounded off (he actually was none the wiser and was most probably thinking thats how things were back in the old day).... so i going to reshield the wire and the reason for this may be obvious in this video

watch the video til the end (its unlisted so i'm not trying to generate views)

theres obviously something causing noise or interference and most probably nothing to do with the resistors (unless your getting low volume)....

if you want to go down the usb audio route, this may help (i havent tried it and there are posts already about this)

Mine is actually way worse than yours. I only heard a few stutters from yours. Mine is very noticeable in stereo. And even mono, although less.

The wire mod is to connect both right sides of the resistors to the - of the speaker right? I did this with a wire by hand just to test and the sound got so choppy that the music almost stopped.

If I can't find the resistors tomorrow when I'm out and about, I'm to a point where I'll just have to use the dac and and a separate amp and just wire all the audio separately

Lololo wrote: ↑
Fri May 12, 2017 5:30 am
ahhhhhh, in wanting to redo the connections, I broke them.

Is there a way to connect the headphone to another location
uille.JPG-(?

EDIT:

I think I could put the headphone back ... but still breath problems
SpoilerShow
20170512_144140.jpg

First post has images of alternate points (do people even look at that post?). A USB sound card can be used with the board instead of PWM and it works rather well. Hollyhoo has done this recently and didn't need to change anything on board if it had 10 ohms since it got a little low with higher value resistors.

Basically you take the usb output L,R and connect those to the top 2 pins on the Volume wheel (L and R) and then everything connects like it does in the image on the first post .

If I had the usb sound card and volume wheel fritzing parts I'd make a diagram so it's "easy" to follow.

VeteranGamer

jermzz wrote: ↑
Thu May 11, 2017 10:01 pm

So I did this and problem persists. Although much less, I STILL get choppyness (and freezes) with mono sound. Does this confirm the resistors need to be changed?

if so can you recommend a link to get the right ones? Or if you have some I'll gladly pay them / shipping.

also, in the mean time, how would I wire a dac to the all in one? Havent done usb audio, yet but it sounds like a good idea until I can get this sorted, and I have one on hand. Would I just wire L out and R out to PWM 0 and 1? Or will that cause the same problem?

i was thinking about wiring up usb audio, but i may leave that for another build (fitting a usb device and an amp may be tight in my current build).....

the onboard audio is fine it justs needs the right envioroment (providing the wiring is correct), my aio board originally came with 10ohm resistors, i changed them for 75ohm (still an issue) joined the the two pwm wires together and put a jumper from the resistors to the speaker.... that actually worked or so i though as i had only really been testing without the case closed, once closed the problem arose again, so i shielded the pwm wires, that seemed to have resolved the issue....

but i was wrong.... while my son was playing with it, i actually noticed that tetris sounded off (he actually was none the wiser and was most probably thinking thats how things were back in the old day).... so i going to reshield the wire and the reason for this may be obvious in this video

watch the video til the end (its unlisted so i'm not trying to generate views)

theres obviously something causing noise or interference and most probably nothing to do with the resistors (unless your getting low volume)....

if you want to go down the usb audio route, this may help (i havent tried it and there are posts already about this)

docholiday11x

Helder wrote: ↑
Mon May 08, 2017 2:03 pm

jermzz wrote: ↑
Sun May 07, 2017 1:56 pm
Having a strange audio issue. Everything works for the sound, but it's constantly skpping, going in and out. I've tried everything short of replacing the pi itself, which is next. I wanted to post up here my wiring just to see if someone sees something I missed, or has a suggestion on something to try. The sound is not only broken in emulators, but also broken in the ES menu when clicking through roms, which leads me to believe its hardware related. Especially since I've tried multiple SD cards. help?

Ive tried 3 different speakers (stock and adafruit)
two potentiometers (b10k, b103)
Wired, rewired sound multiple times
2 different SD cards with multiple fresh retropie installs.

wiring pictures:
SpoilerShow
image3.JPG image2.JPG image1.JPG
and alink to a short video of what it actually sounds like:

SpoilerShow
thank you.

EDIT: Also replaced the pi. Problem persists. Seems the only thing I haven't changed now is my AIO. Not sure what would cause this problem. The amp?

EDIT 2: Problem is not present when using HDMI out to an external screen and much less apparent when using headphones, but still slightly there. Sometimes experiencing small lag spikes. When the sound lag / skip gets really bad it does cause lag in game as well briefly.

Edit 3: If I disconnect one pot (L or R) from the AIO problem goes away. But then sound is obviously coming from only one side, and it's less audible. Also if I turn the volume way down, like low enough I have to put my ear really close to the speaker to hear, the problem also goes away.
The 2 resistors labeled 910 to the right of the headphone socket should be changed to a lower value like 75 ohms and see if that fixes the choppyness. The manufacturers messed up and put 10ohms there so I have been manually replacing them with 75ohms but ran out and used the next closest value I had on hand. So changing those to 75ohms might fix the issue as I've not had any other complaints from the 75ohm installs your are the 2nd person who had this issue in this batch so those must be the culprit.

I can replace the resistors if you send the board back to me or you can try to swap them yourself and see if that fixes the issue.

docholiday11x wrote: ↑
Sun May 07, 2017 3:42 pm
having an issue with multiple button presses (up to 5 for one press) registering in retropie. However in game this problem goes away. Any idea why this might be happening?
Go to the Other Hardware Forum and look at the guide to update the controller firmware using a USBasp,then use the latest hex file located here:
http://www.sudomod.com/forum/viewtopic.php?f=22&t=2970

This has a better code for buttons and is more responsive so it should fix multi button presses, also are you using an analog stick?

Thank you, I will check that out. And yes, I am using 2 analog sticks

jermzz wrote: ↑
Sun May 07, 2017 1:56 pm
Having a strange audio issue. Everything works for the sound, but it's constantly skpping, going in and out. I've tried everything short of replacing the pi itself, which is next. I wanted to post up here my wiring just to see if someone sees something I missed, or has a suggestion on something to try. The sound is not only broken in emulators, but also broken in the ES menu when clicking through roms, which leads me to believe its hardware related. Especially since I've tried multiple SD cards. help?

Ive tried 3 different speakers (stock and adafruit)
two potentiometers (b10k, b103)
Wired, rewired sound multiple times
2 different SD cards with multiple fresh retropie installs.

wiring pictures:
SpoilerShow
image3.JPG image2.JPG image1.JPG
and alink to a short video of what it actually sounds like:

SpoilerShow
thank you.

EDIT: Also replaced the pi. Problem persists. Seems the only thing I haven't changed now is my AIO. Not sure what would cause this problem. The amp?

EDIT 2: Problem is not present when using HDMI out to an external screen and much less apparent when using headphones, but still slightly there. Sometimes experiencing small lag spikes. When the sound lag / skip gets really bad it does cause lag in game as well briefly.

Edit 3: If I disconnect one pot (L or R) from the AIO problem goes away. But then sound is obviously coming from only one side, and it's less audible. Also if I turn the volume way down, like low enough I have to put my ear really close to the speaker to hear, the problem also goes away.

The 2 resistors labeled 910 to the right of the headphone socket should be changed to a lower value like 75 ohms and see if that fixes the choppyness. The manufacturers messed up and put 10ohms there so I have been manually replacing them with 75ohms but ran out and used the next closest value I had on hand. So changing those to 75ohms might fix the issue as I've not had any other complaints from the 75ohm installs your are the 2nd person who had this issue in this batch so those must be the culprit.

I can replace the resistors if you send the board back to me or you can try to swap them yourself and see if that fixes the issue.

docholiday11x wrote: ↑
Sun May 07, 2017 3:42 pm
having an issue with multiple button presses (up to 5 for one press) registering in retropie. However in game this problem goes away. Any idea why this might be happening?

Go to the Other Hardware Forum and look at the guide to update the controller firmware using a USBasp,then use the latest hex file located here:
http://www.sudomod.com/forum/viewtopic.php?f=22&t=2970

This has a better code for buttons and is more responsive so it should fix multi button presses, also are you using an analog stick?

jermzz

Having a strange audio issue. Everything works for the sound, but it's constantly skpping, going in and out. I've tried everything short of replacing the pi itself, which is next. I wanted to post up here my wiring just to see if someone sees something I missed, or has a suggestion on something to try. The sound is not only broken in emulators, but also broken in the ES menu when clicking through roms, which leads me to believe its hardware related. Especially since I've tried multiple SD cards. help?

Ive tried 3 different speakers (stock and adafruit)
two potentiometers (b10k, b103)
Wired, rewired sound multiple times
2 different SD cards with multiple fresh retropie installs.

wiring pictures:

SpoilerShow

: image3.JPG (2.65 MiB) Viewed 12986 times

: image2.JPG (1.85 MiB) Viewed 12986 times

: image1.JPG (1.71 MiB) Viewed 12986 times

and alink to a short video of what it actually sounds like:

SpoilerShow

thank you.

EDIT: Also replaced the pi. Problem persists. Seems the only thing I haven't changed now is my AIO. Not sure what would cause this problem. The amp?

EDIT 2: Problem is not present when using HDMI out to an external screen and much less apparent when using headphones, but still slightly there. Sometimes experiencing small lag spikes. When the sound lag / skip gets really bad it does cause lag in game as well briefly.

Edit 3: If I disconnect one pot (L or R) from the AIO problem goes away. But then sound is obviously coming from only one side, and it's less audible. Also if I turn the volume way down, like low enough I have to put my ear really close to the speaker to hear, the problem also goes away.

mrjfutz wrote:
I did as you said and it shows up as an empty 4-port usb hub. It doesn't ever try to install drivers for the aio, but it did automatically install drivers for the xbox controller

It's 1 of 2 things since the USB Hub is working, it could be bad resistors from the Atmega chip or a reflow on the pins of the usbhub chip are needed that connect to the Atmega chip.

Use this image below for reference to what to do, pins 4 and 5 you try to reflow with a clean soldering iron tip which I colored green and blue.
The resistors (circled in red) use a multimeter to get their values by probing both ends of the same resistor, values should be around 22ohms give or take 1 or 2 ohms. Then test and let me know.

pomme wrote: ↑
Sun Apr 16, 2017 3:21 pm
After continuing to troubleshoot I eventually got this working. The best I can figure is that I may have shorted PP22 and PP23.

All controls seem fine in ES but my controls are completely borked in setup-menu areas (e.g. LEFT dpad seems to be registering as A/confirm). This makes it tough to do any configuration. Is this a known problem with a workaround? I had to put the sd in another pi to get the wifi configured...

Reflash the image on the SD card and do a clean install and redo all the controls, be sure the Button Membranes are good ones as mentioned in the previous page the membrane can cause buttons to be unresponsive.

htbrdd wrote: ↑
Sun Apr 16, 2017 6:11 pm
I have a v2.1 blue board. I have sound but it is very low. I don't have a usb hub yet so I can't go in and adjust the sound in the retropie menu. Any other way to increase the sound? Volume pot all the way up. Thanks

This has nothing to do with the AIO and more likely you not being able to use a keyboard on the Pi so I suggest getting one of these:
https://www.amazon.com/Micro-USB-Male-F ... B0027YYMU6

This way you can use a keyboard to configure Audio and everything else you need.

htbrdd

I have a v2.1 blue board. I have sound but it is very low. I don't have a usb hub yet so I can't go in and adjust the sound in the retropie menu. Any other way to increase the sound? Volume pot all the way up. Thanks

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