All in One PCB Support Thread

[Helder]

So is there a way to bypass the volume wheel? On the all in one can I straight wire the in to the out for both L and R pads?

This has been explained numerous times and in the last page of posts too....... do some reading and also search this thread but let me do the work for you:

Skip the Volume wheel:

[zoolman88]

thanks this is what I thought would need to be done. And with the 6 pin jack I saw you said to solder the extra pin to the pin next to it. Is this 100%?

So is there a way to bypass the volume wheel? On the all in one can I straight wire the in to the out for both L and R pads?

This has been explained numerous times and in the last page of posts too....... do some reading and also search this thread but let me do the work for you:

Skip the Volume wheel:

[Helder]

thanks this is what I thought would need to be done. And with the 6 pin jack I saw you said to solder the extra pin to the pin next to it. Is this 100%?

Looking at the datasheet of the headphone socket I assume it will work but I actually need someone with the 6pin socket to try it and let me and everyone else know.

[Tomatoflames]

Solution found! Thanks @Helder.

Issue: Extremely choppy and quiet audio through speaker.

Solution: Added resistors as suggested by Helder which, instantly increased the volume and reduced the choppiness to a very playable level. No other steps were required apart from hookup as shown on Helder's wiring diagram and the config file, both of which are found on page 1 of this thread.

My setup: AIO 2.2A with 5 pin audio jack, Raspberry Pi v1.3, Adafruit Powerboost 1000C TPS61000, and 8 Ohm 1/2 Watt speakers https://www.amazon.com/gp/product/B00WW ... UTF8&psc=1

Parts Required: Two 75ohm 1/2 watt resistors, Three 1.5 inch long pieces of extra PWM or audio wire and a small piece of perf board.

Resistors from https://www.amazon.com/gp/product/B0002 ... UTF8&psc=1

To do:
Place resistors into the perf board parallel and adjacent to each other and solder the ends together on one side to make a U shape.
Solder a wire from the bottom of the U, on the side you just joined, to the Speaker - pad on the AIO.
On the other side of the perf board, solder a wire from the end of one resistor to the right side of R15.
Solder another wire from the end of the other resistor to the right side of R16.
Done

You do have extra perf board that you used for practice, right?!
For excellent soldering tips to protect your investment - http://www.sudomod.com/forum/viewtopic.php?p=21465

[Sugarding]

Solution found! Thanks @Helder.

Issue: Extremely choppy and quiet audio through speaker.

Solution: Added resistors as suggested by Helder which, instantly increased the volume and reduced the choppiness to a very playable level. No other steps were required apart from hookup as shown on Helder's wiring diagram and the config file, both of which are found on page 1 of this thread.

My setup: AIO 2.2A with 5 pin audio jack, Raspberry Pi v1.3, Adafruit Powerboost 1000C TPS61000, and 8 Ohm 1/2 Watt speakers https://www.amazon.com/gp/product/B00WW ... UTF8&psc=1

Parts Required: Two 75ohm 1/2 watt resistors, Three 1.5 inch long pieces of extra PWM or audio wire and a small piece of perf board.

Resistors from https://www.amazon.com/gp/product/B0002 ... UTF8&psc=1

To do:
Place resistors into the perf board parallel and adjacent to each other and solder the ends together on one side to make a U shape.
Solder a wire from the bottom of the U, on the side you just joined, to the Speaker - pad on the AIO.
On the other side of the perf board, solder a wire from the end of one resistor to the right side of R15.
Solder another wire from the end of the other resistor to the right side of R16.
Done

You do have extra perf board that you used for practice, right?!
For excellent soldering tips to protect your investment - http://www.sudomod.com/forum/viewtopic.php?p=21465

Thanks for the info! Would it be possible to take a picture of the underside of the perfboard. I would like to see how you joined the "Speaker -" wire and also where is one of speaker's (yellow) wire going to?

[Lphillimore]

Hi @tomatoflames

This is exactly the issue I'm having.

Have been losing my mind.

I removed the 10ohm chip resistors on my AIO and soldered 75ohm resistors in there place, however still no joy.

I will look to follow your method this evening with the 'U' joined resistors and perf board. Hopefully I wont need to re-solder the 10ohm chip resistors back first.

Can you confirm fro the picture that the negative speaker wire and red wire from the perf board both go to the negative speaker pad?

Cheers

[Tomatoflames]

Can you confirm fro the picture that the negative speaker wire and red wire from the perf board both go to the negative speaker pad?

Cheers[/quote]

Yes you will have two wires going to the "Speaker -" pad. All of my wiring is done as per Helder's diagram. Then I added the resistors as described and pictured in my earlier post. You're going to have to use your imagination a little bit, but the red wire from "speaker -" is joined with the ends of both resistors.

[Miogui]

Ok so you have just put 2 resistors in parrallel of the speaker (the end of R15 &R16 are directly connected to speaker+)

So in theory we just need 1 resistor (150o) between speaker+ and-... This is weird but I will try this hack tonight.

[144TECH]

Well folks, i just use a 1w speaker from a crappy laptop, and have brilliant clear crisp audio... with no bullshit at all, no filters , no resistors, no capacitors, NOTHING. i just used SHIELDED SPEAKER WIRE
and @tomatoflames, you don't even have a volume wheel... wich is a variable resistor from 10kilo ohms, that WILL stop interference it WILL. and people crying having bad audio, i feel really sorry, if you bypass the volume wheel you just pump in the max with no resistance, and receiving the disturbance back thru the GND, well.. don't yell ''i have bad audio'' just do it as it SHOULD be ! , yet pumping 2w in a 0,5w speaker is just raping the speaker. good luck.

[Lphillimore]

@144TECH I might ad that I am using a volume wheel (always have been) and shielded speaker wire but still get these issues

Everything wired as per Helders diagram.

Clearly there is a resistance issue somewhere so hopefully I can find it.

Unfortunately this is no longer my primary concern as my Gearbest screen died last night so now need to remove that and build it back up...