XMOS-based Asynchronous USB to I2S interface - Page 191 - diyAudio
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Old 1st December 2013, 04:50 PM   #1901
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Location: Berlin

i think it is USB via jack or over J1

[EDIT]add a PDF
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Last edited by carsten.witt; 1st December 2013 at 04:54 PM.
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Old 1st December 2013, 06:38 PM   #1902
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Thanks very much Carsten...!
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Old 2nd December 2013, 06:05 AM   #1903
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Location: Bologna, Italy
Originally Posted by Ian Millar View Post
Lucian, may I ask - what is the actual "source voltage" across each LED take-off? In a previous post in this thread a member suggested to another that he place a 5K resistor in series with a standard LED to limit current to your specified 8mA, but 5K seems very high. If the "source voltage" is (say a guess) 3.3V, and your LED has a 2V drop, then the resistor ought to be around 180R in order to limit current to 8mA. However we need the actual "source voltage" to calculate this.
Hi Ian, I presume you're referring to my #1428 post.
You're correct, my reply can be misinterpreted. The resistor value depends on what current you want. 8mA caused real brightness with my leds.
If you really want 8mA, ~180R is the correct value.
I confirm I was using 5k resistor, I wanted the leds very dim.
The Led Vout is around 3.1V (#1124), on my board.
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Old 2nd December 2013, 08:17 AM   #1904
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Location: Australia
Thank you m.massimo. Yes and thanks for the perfect info. Now I see your post #1124 which I could not have found so easily way-way back in such a long thread otherwise. Cheers.
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Old 5th December 2013, 06:18 PM   #1905
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Is there anybody who knows if the WaveIO USB module can be placed under a DAC (maybe 4-5 cm under a DAC pcb) without any problems - soundwise or other -regarding EMI or RF etc.? Maybe some kind of shielding is necessery?

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Old 5th December 2013, 11:02 PM   #1906
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I just bought some Stillpoints ERS sheets. Maybe they can make digital a bit easier in cramped places. ERS
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Old 7th December 2013, 07:58 PM   #1907
jrling is offline jrling  United Kingdom
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Originally Posted by Lorien View Post
I have plans to do it these days because I must reserve some time for this task since there are couple of custom driver I need to build besides WaveIO. Even if I looked into the revision document I'm curious what 'huge' updates are you talking about?
Lorien - any luck with the new Thesycon drivers for us WaveIO users?

Do you have to change the software or is it just a matter of putting them on your website?

Thanks Jonathan
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Old 9th December 2013, 04:27 PM   #1908
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Join Date: Jul 2013
How about new drivers ? 2.15 version.

Generic package is online since 31.10.2013 on XMOS webpage.
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Old 10th December 2013, 09:05 PM   #1909
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Hi Lorien,

I am trying out the UFL connections from wave IO to dddac but this is unsuccesfull now. I have connected data, BCK, LR and GND of the dac to the UFL connectors of wave IO.

Sound is distorted, mostly noise with the music on back ground.

Am I doing something wrong?

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Old 10th December 2013, 10:14 PM   #1910
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Location: the Hague
Hi Ss!
Data, LR, and Bck should work. Don't forget to connect ground to H4......and put 3.5 to 5Volts on pin 5 of the bigger connector, next to the Ufl's. This is what the isolator needs to get working!

Last edited by ed linssen; 10th December 2013 at 10:44 PM.
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