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Author: DigitalToys

HiFi DACs for Orange Pi

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Post time 2016-5-25 05:12:24 | Show all posts
Two projects are very similar.2) Orange PI PC with Kodi (I also would use OpenELEC, but my board have broken hdmi bus)

How did HDMI port brake?

4) Amplifier class D with ( TPA3116( class D  I have make a class AB amplifier, almost working in Zone A, but now I'm not using that need to finish the preamplifier and box.)[/url]

I know the quality of class D is under some discrete classa A\AB amplifier )and, of course, vacum tube amplifier) but now some circuits have a good quality and the ratio qualitt/price is anwinble. The price of my multimedia center (i will put all inside one case) will be around 100 euro, but the quality of music will be medium/hight

With my dac at least I have no problems of background noise, and use an ordinary switching power supply.

in my case the 5V power suply is reduced inside the dac to 3.3V by a smd linear regulator. The dac is the first part of analogic signal, then i think i can have advantage  using a itium battery; so Sabre ES9023 run better with 3,6V power supply.

so i want in the future upgrade the ampli board with this changes: http://www.tforumhifi.com/t48121 ... e-tpa-3116-completo

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Post time 2016-5-25 23:55:31 | Show all posts
Giachi replied at 2016-5-24 22:12
How did HDMI port brake?

hdmi worked well, restart the OPI and hdmi has never worked more    I am planning to buy an OPI PC Plus for other uses, and this according to photo has ESD protection on HDMI

You can try one of these amplifiers, look good, and has better data as indicated by the class D.

I guess while listening to music lithium battery is not charging, but you can have a lot of noise produced by the charger.

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Post time 2016-5-26 05:00:18 | Show all posts
Unoqueva replied at 2016-5-25 23:55
hdmi worked well, restart the OPI and hdmi has never worked more    I am planning to buy an OPI  ...


"You can try one of these amplifiers, look good, and has better data as indicated by the class D"
i know LM3886 chip, the Gainclone. Maybe i will try one day

" guess while listening to music lithium battery is not charging, but you can have a lot of noise produced by the charger."
The dac uses less 50mA, then with a 26650 litium battery it can run for more one day. Arduino will check the charge level of the battery, and will charge it when i switch on the mediacenter.


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Post time 2016-5-26 05:15:41 | Show all posts
Have you tryed your dac with openelec?

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Post time 2016-5-26 23:22:57 | Show all posts
OpenELEC kernel does not recognize the I2s

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Post time 2016-10-26 03:07:22 | Show all posts
Hi friends
I'm new I have Dac PCM5102 DAC Decoder Player I2S it and connect as shown in the first page but with home cinema amplifier it works well and when I plug the speaker sounds almost not hear.
they must add amplifiers dac has this card or not, normally that with thank you pregnant
https://es.aliexpress.com/store/prod...-9f4f69a2b5fb:)

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Post time 2016-11-27 05:15:28 | Show all posts
Hi, I've found that at the OPi-Zero is not pinned out the PCM0_DOUT (PA20) at the pin header. How to redirect this pin to other one, which is pinned out at the 2x13 pin header? Or is there some other way how to use the I2S DAC with the Zero board? It's important for me, because the media streaming is 80% of my applications and this board is well suited for it.

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Post time 2016-11-30 05:55:31 | Show all posts
Hi,
I've the same question of jgrulich.

I'm not sure Opi Zero have the I2S

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Post time 2017-7-29 01:18:45 | Show all posts
DigitalToys replied at 2015-5-21 15:29
Ok, the DAC arrived yesterday. Connected it to a RPi B running Volumio to test it, works great! I tr ...

Isn't the pinout for the header the same on the Orange Pi series as it is on the Raspberry Pi?  I know different models of the Orange have more headers to hook to but they all seem to have the Pi GPIO header.
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