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Messages - emanuel

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16
DACs / Re: I want to build a DAC for Raspberry Pi 2
« on: August 27, 2015, 10:28:37 am »
webif for raspberry on default localhost:8100


can you test?


I've got always an single sharp beam in the middle, while changing picture on audacious player

17
DACs / Re: I want to build a DAC for Raspberry Pi 2
« on: August 27, 2015, 03:44:09 am »
cool, now I'll build a webif to control the player on raspberry.

18
DACs / Re: I want to build a DAC for Raspberry Pi 2
« on: August 22, 2015, 01:55:48 pm »
Thank you!

19
DACs / Re: I want to build a DAC for Raspberry Pi 2
« on: August 22, 2015, 09:36:08 am »

Orange is working (ild file from net) converted by lb.


https://goo.gl/photos/2TKubngAymxaEeVG6


Thank God I've found Laserboy

20
DACs / Re: I want to build a DAC for Raspberry Pi 2
« on: August 22, 2015, 07:35:03 am »
Yes little bit, but python is very diffrent from C/C++.
I've looked a lot in the effects of lb, and in the ilda specifications (pdf) here in the forum.

21
DACs / Re: I want to build a DAC for Raspberry Pi 2
« on: August 21, 2015, 06:09:28 pm »
Ok, I'll try


-> News about my new beta: see picture, toolbars are ready (hand made, tkinter do not provide by default)  %)

22
DACs / Re: I want to build a DAC for Raspberry Pi 2
« on: August 19, 2015, 05:34:36 pm »

Yesterday I tried the new soundcard. What can I say. The spirit rotating effect (here magenta) with blanking lines was even stronger, lighter and even faster than with the old sound card. My first thought: I'm going to have to dig deep into my laser projector, the home power supply ... The first thing I was looking for material in the basement, so I can build me a Wire cable between the amp kit and the laser to achieve single DB25 contacts operation. And I have an old printer cable ~ found 5 meters and an old software dongle. Profit after about 1 hour soldering was a 5m DB25 extension cable. (RGB channels are not soldered to test). Now the red gear to the test. goes well, no more issues. The green gear was I think yellow and blue was magenta and had all blanking to lines. But the rotating effect spirit was gone.


Errors were: channel I was exchanged for a color channel, the amp kit directly connected to the projector without shielded cable has interference (ghost Effect) So I think the other 2V + sound card works just as well. To find the bug without oscilloscope is difficult in such a small fast signals. I tested on the Raspberry, today I have connected the correct cables, and for the first time a reasonably clean image (only tested with default settings in Laserboy)


In the python script I will sometimes try to produce music signals, perhaps going yes.


see:


https://goo.gl/photos/8stdcCFv57FkyE9e9


 %)

23
DACs / Re: I want to build a DAC for Raspberry Pi 2
« on: August 17, 2015, 02:56:05 pm »

I'm gonna Ilda editor newly ...


That's still a python script  8)

24
DACs / Re: I want to build a DAC for Raspberry Pi 2
« on: August 15, 2015, 02:39:40 am »
http://www.prontosystems.org/tux/software_raid


(software raid under debian) page is in german, but translating in google works well.

25
DACs / Re: I want to build a DAC for Raspberry Pi 2
« on: August 13, 2015, 12:54:23 pm »
is ordered, hope this helps  ;D

26
DACs / Re: I want to build a DAC for Raspberry Pi 2
« on: August 12, 2015, 01:02:47 pm »

Have you thought about getting the exact same sound device as I use?
>> yes

my soundcard is C8 and has C-Media 6206 chip inside:-(
exact the same, they do not sell, but looks equal:

ADMIN EDIT: LINK REMOVED; reason: way too long! Blowing out the window borders!


*-- SNIP --*

I'm affraid that it is not the soundcard, but what can I do...

27
DACs / Re: I want to build a DAC for Raspberry Pi 2
« on: August 12, 2015, 07:07:12 am »
I've tested all in Windows at the very first try + Spiderplayer + Disc driver + full 8 cannels, also on Linux pc amd64. Always the same white noise. It does not depend on which host I'm running the soundcard + amp + projector. Also I've mad the colored Gears in R/G/B, at that point I've noticed my projektor's RGB channels are twisted (DB25), but that was fixed simple by swaping DAC inputs. I can not get rid of that white noise circling around the picture and the blanking line. The Setup only edits quality of the main picture.


Also I've noticed looping a wave of 10 sec produces a double picture with a small offset, maybe this is also this white noice but on X and Y cannel. Using a one frame wave does make one circled picture.


I think I have no chance to find the source of the white noice. It could be the soundcard, projector..

28
DACs / Re: I want to build a DAC for Raspberry Pi 2
« on: August 11, 2015, 02:24:10 pm »

What parameters are you using to make waves?
>>>3,4,5, pots, ... lots, but the white RGB noice do not go away :-(

Even if I swap one of the RGB cannels wire with channel 6 of the DAC there is missing a color in the main picture, but the white RGB noice picture is shown with full colors. So the white noice is on the other non RGB channels also. I do not know what I can do any more.

29
DACs / Re: I want to build a DAC for Raspberry Pi 2
« on: August 10, 2015, 02:59:29 pm »


about TTL: it is analog, I can reduce color intensiveness with pot on all RGB channel.


Please take a look at the video (sorry bad phone cam) there you can see the issues:
the whole art will be circled by a white or sometimes magenta copy of it self including the blanking lines.
Some kind of interference on the RGB channels.
 
https://goo.gl/photos/vBoNMaHmtd81P2GS8


If I reduce all RGB channels to 0V, it is still there as you can see:


https://goo.gl/photos/eSFFWDLJ5qvYvWzh9


Have you seen somthing like this before? What can I do?

30
DACs / Re: I want to build a DAC for Raspberry Pi 2
« on: August 09, 2015, 06:37:41 pm »
So I've setup all on raspberry, I still have got magenta blanking Lines. I'm at 5.0V at RGB, juppers do reduce down to 4.85V.


And Colors are very TTL like. Do I have to reduce power on the RGB Channels?

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