3x powersupply for rpi

dror

Hi
You mean this for example?
http://www.ebay.com/itm/2017-15VA-DC5V-USB-2-1A-linear-power-Supply-FOR-fever-DC-CAS-XMOS-Raspberry-Pi-/182309922767?hash=item2a7284a7cf:g:CcYAAOSwNRdX~Fqq

Cheers

fboe

dror wroteHi
You mean this for example?
http://www.ebay.com/itm/2017-15VA-DC5V-USB-2-1A-linear-power-Supply-FOR-fever-DC-CAS-XMOS-Raspberry-Pi-/182309922767?hash=item2a7284a7cf:g:CcYAAOSwNRdX~Fqq

Cheers

Hi

Yes, that could work, just remember to order the 5v edition

Cheers

dror

cheers

hkknudsen

dror

fboe wrote
dror wrote You can use the standard psu to pin 2 and 6 - but its a noisy switchmode, so I would recommend a linear psu. They can be found on ebay to a good price.
Cheers

Hi, finally I did attempt to use the regular plug psu to feed the GPIOs.
Now, I have a Hifiberry DAC+ on top of them, so I released it, pluged on the wires and re-installed the DAC ontop.
First, power was on but Rune was not loading. Rebooted, this time Rune came up. I then started a play, but after a few seconds the playback stopped.

I removed this for now, but is it related to having the DAC on the GPIOs ?

fboe

dror wrote
fboe wrote
dror wrote You can use the standard psu to pin 2 and 6 - but its a noisy switchmode, so I would recommend a linear psu. They can be found on ebay to a good price.
Cheers
Hi, finally I did attempt to use the regular plug psu to feed the GPIOs.
Now, I have a Hifiberry DAC+ on top of them, so I released it, pluged on the wires and re-installed the DAC ontop.
First, power was on but Rune was not loading. Rebooted, this time Rune came up. I then started a play, but after a few seconds the playback stopped.

I removed this for now, but is it related to having the DAC on the GPIOs ?

Try to connect the power directly to the P3 on the dac - that will also feed the rpi.

ciuffoly

Do you use external usb audio interface or internal ?

dror

fboe wrote Try to connect the power directly to the P3 on the dac - that will also feed the rpi.

Where is that? on the Hifiberry?

ciuffoly wroteDo you use external usb audio interface or internal ?

What do you mean? the DAC is not conneted via usb

ricky007

Hello, do I have the onboard regulator removed? or is it enough to connect the power to PP9, PP7, PP5, PP8?
greeting
Ricky

dragos_nedelcu

I did something similar. Removed the regulator and 2 inductors. Almost impossible to desolder so i ripped them with a plier. The thing is so small that i ripped c4 in the process as well so i attached another cap instead of about the same size. After that i connected the 3 voltages at L1, L2 and D5. Now about the sound. I believe it needs some burn in time. After a few hrs, the soundstage is deeper, i can hear some more details on the strings, like the fine treble and something on the background that was not there. These are the +. Now the -. The low freq are a bit booming. Hope the effect will go with burn in.

dragos_nedelcu

I also left some space in the case for a singxer f1. Now i use gustard du u8, but i do consider the singxer and i am thinking of providing it clean 5v.

dragos_nedelcu

ricky007 wroteHello, do I have the onboard regulator removed? or is it enough to connect the power to PP9, PP7, PP5, PP8?
greeting
Ricky

I believe you should remove the regulator and the 2 inductors L1 and L2. I couldn't desolder so i ripped them with a plier. Not too clean, but it worked.

rastus

dragos_nedelcu wroteThe low freq are a bit booming. Hope the effect will go with burn in.

And, you will keep us updated of course, right?

dragos_nedelcu

rastus wrote
dragos_nedelcu wroteThe low freq are a bit booming. Hope the effect will go with burn in.
And, you will keep us updated of course, right?

Now it sounds sweet. I fotgot about the boom. It is gone with burn in.

rastus

Sweet is always good... and the boom has gone, good.... so all's well that ends well... good.

thanhvo31

Thí guy sell the board with pre config modules
Mezzanine Power board for Raspberry Pi.
http://www.ldovr.com/ProductDetails.asp?ProductCode=Mpower

dragos_nedelcu

It should be good, but: you still have the 2 noisy inductors and the regulator on the pi. If you remove them and use this, it might not work. And the pinout of pi3 doesn't have 1.8v.

gumof

is it possible to run rpi 3b+ without 5V -I don't need it..

nano35

Thanks for the instruction. A late comer here who modified a RPi3 model B with linear PS for 5V, 3.3V & 1.8V.
The audio improvement is enormous!
More dynamic, more power, more details, more engaging!
I am extremely happy with it.

Now someone mentioned about the C97 / C98 capacitors modding behind the USB unit.
I am eager to try it out and like to know in detail what to buy and how to install it.
I am a fresh DIYer and hope someone can help me out.

Thank you again.

My gear list:
RPi3 model B;
50VA transformer 2x9Vac secondary winding;
LT3045 regulator module to go down to 8Vdc;
then LT1963 regulators for 5V, 3.3V & 1.8V;
WD 500GB SSD;
EDUP wifi dongle;

linh0983

Hello!
This is a 3x power supply for my Pi3 after removing ic smps .

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