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Something cool for Raspberry Pi/ODROID: I2S/DSD isolator HAT with native DSD decoder
Something cool for Raspberry Pi/ODROID: I2S/DSD isolator HAT with native DSD decoder
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Old 3rd January 2019, 03:28 PM   #371
iancanada is offline iancanada  Canada
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Something cool for Raspberry Pi/ODROID: I2S/DSD isolator HAT with native DSD decoder
Quote:
Originally Posted by miklau View Post
Hi Ian

I was just wondering if everthing is fine if I power the isolator pi and my raspberry pi simultaneously? Your manual just state to power the Isolator first and then the RPI. If there is sound is everything fine or would SQ improve if powering the RPI with a 1-2 sec delay?

Thanks
The power up sequence is only related the initialization timing of HAT on top of IsolatorPiI or IsolatorPiII. Because of the pretty slow RPi boot up time, I don't think there is any problem to power them simultaneously. I didn't see it has anything to do with sound quality.

Regards,
Ian
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Old 3rd January 2019, 03:30 PM   #372
iancanada is offline iancanada  Canada
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Something cool for Raspberry Pi/ODROID: I2S/DSD isolator HAT with native DSD decoder
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Originally Posted by Greg121986 View Post
I am trying to understand whether I should wire my ODroid C2 directly to my DAC by I2S, or if there would be a major benefit by going to something like the isolator hat, FIFO board, McFifo? There are quite a few choices here so it's difficult to determine which is the best one. I do not wish to use RPI because of its slow Ethernet connection. I want to keep the ODroid C2 because of its GbE and eMMC storage. I must find the best choice for ODroid C2.

I was planning on making a cable to run from my C2 7 pin I2S header to the RJ45 input of my Audio-GD NFB7.77 according to the photo attached. The NFB7.77 should be able to clock the signal without the MCLK present. Without the MCLK, do I need to worry at all about poor clock quality from the C2? Would there be a vast improvement by going with a McFifo or I2S isolator hat? All input is appreciated.
If you are worry about jitter, FifoPi would be your solution.

Regards,
Ian
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Old 3rd January 2019, 03:34 PM   #373
iancanada is offline iancanada  Canada
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Something cool for Raspberry Pi/ODROID: I2S/DSD isolator HAT with native DSD decoder
Quote:
Originally Posted by franz159 View Post
Hi everybody.
I have used the isolatorPi with an IQaudio Dac+ working in slave mode.
I have now bought an Allo Boss 1.2, which works in master mode.

Therefore on the isolatorPi I should reverse the jumper settings on J11 and J12 to make it works with master mode dac, correct?

My second question is about powering.
Should I use the J1 power input on the isolatorPi or could/should I use the USB type c connector on the Allo Boss Dac?

On the Boss Dac I have already removed the J25 jumper because I'am already powering the Boss and the RPI individually.
In this situation, does indeed make sense to add the isolatorPI or the separation already implemented in Boss 1.2 powering already provides galvanic isolation?
Thanks for any insight on this!

Franz
Please refer to IsolatorPi or IsolatorPiII user's manual for settings running whith master DAC.

Powering RPi from GPIO would be always better than from a USB cable.

Regards,
Ian
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Old 9th January 2019, 10:59 AM   #374
miklau is offline miklau  Denmark
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Quote:
Originally Posted by iancanada View Post
The power up sequence is only related the initialization timing of HAT on top of IsolatorPiI or IsolatorPiII. Because of the pretty slow RPi boot up time, I don't think there is any problem to power them simultaneously. I didn't see it has anything to do with sound quality.

Regards,
Ian
Thanks for your replay Ian

I am still planning on adding an extra isolated pin connector on the IsolatorPi I. Could you please direct me to what type of small SMD components I should buy to build this?
Thanks in advance
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Old 12th January 2019, 03:03 PM   #375
franz159 is offline franz159
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Quote:
Originally Posted by iancanada View Post
Please refer to IsolatorPi or IsolatorPiII user's manual for settings running whith master DAC.

Powering RPi from GPIO would be always better than from a USB cable.

Regards,
Ian
Apologies for my dumb questions... if I power the IsolatorPi through the deicated J1 connector, the IsolatorPi will then in turn power the connected audio board, Allo Boss in my case.

But the raspberry will always be powered through its micro-USB port (connected to a USB cable), so I'm not sure I understand your answer above.

Unless I'm missing something....
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Old 13th January 2019, 12:18 AM   #376
iancanada is offline iancanada  Canada
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Something cool for Raspberry Pi/ODROID: I2S/DSD isolator HAT with native DSD decoder
Quote:
Originally Posted by franz159 View Post
Apologies for my dumb questions... if I power the IsolatorPi through the deicated J1 connector, the IsolatorPi will then in turn power the connected audio board, Allo Boss in my case.

But the raspberry will always be powered through its micro-USB port (connected to a USB cable), so I'm not sure I understand your answer above.

Unless I'm missing something....
If you have an IsoaltorPi II, you can power RPi through J2 on IsoaltorPi II rather than from micro-USB. This is a better solution.

Regards,
Ian
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Old 13th January 2019, 07:42 AM   #377
wealas is offline wealas
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Is the new FifoPi compatible with Odroid or does one need to use the IsolatorPi in between?
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Old 21st January 2019, 05:26 AM   #378
zanlation is offline zanlation  Australia
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I am investigating using my Allo Kali and Piano 2.1 DAC with an Odroid C2. The Kali current powers my RPi, however if I switch to using the C2 will I need to power the Kali and C2 separately? Is there a way to power the C2 from the Kali?
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Old 31st January 2019, 06:08 PM   #379
iancanada is offline iancanada  Canada
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Something cool for Raspberry Pi/ODROID: I2S/DSD isolator HAT with native DSD decoder
Quote:
Originally Posted by wealas View Post
Is the new FifoPi compatible with Odroid or does one need to use the IsolatorPi in between?
FifoPi doesn't have Odroid I2S port. If you really want to use it with FifoPi, you will need a IsolatorPi or IsolatorPiII in between.

Regards,
Ian
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