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ydb1md
#1 Posted : Friday, January 09, 2009 11:30:27 AM(UTC)
ydb1md

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How goes development on the AC1?
Russ White
#2 Posted : Friday, January 09, 2009 9:18:56 PM(UTC)
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Kinda slow, mostly because of huge issues I had with counterpoint development (since fixed) and having to rework Joshua Tree MKII.

Also beacuse My real job gets really crazy at the new year transition.

But rest assured I am still very interested in its development. I just have to get it worked in.

We have the boards ready to go.

Cheers!
Russ
biellis
#3 Posted : Friday, February 27, 2009 7:30:27 PM(UTC)
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Any progress?
Brian Donegan
#4 Posted : Saturday, February 28, 2009 6:35:34 AM(UTC)
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We are ramping up kit assembly and firmware development right now.
biellis
#5 Posted : Tuesday, March 17, 2009 7:42:15 AM(UTC)
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What are the power reqirement for the ac1, will it be able to draw power from the relay control boards?

Bill
Brian Donegan
#6 Posted : Tuesday, March 17, 2009 7:45:51 AM(UTC)
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The AC1 has it's own supply on board, using a PT78ST105V switching regulator, so it can power the display and interfaces. Just plug in a trafo, like the relay driver.
biellis
#7 Posted : Tuesday, March 17, 2009 7:47:45 AM(UTC)
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Will it be 12v? I have a 10va 12v in there now for the controlers.

Edited by user Tuesday, March 17, 2009 7:48:39 AM(UTC)  | Reason: Not specified

Brian Donegan
#8 Posted : Tuesday, March 17, 2009 7:56:34 AM(UTC)
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5V, but a 12V trafo should work fine.
les_garten
#9 Posted : Friday, March 20, 2009 5:34:06 PM(UTC)
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Hello,
I am presently planning a B22 build(6 Board). I will use Twisted Pair gear for attenuation and Source Control. I see the Audio Controller 1 here, buy can't find a description of what it is and what it does.

Heh, where'd you guys get this info?

Les
biellis
#10 Posted : Friday, March 20, 2009 9:57:07 PM(UTC)
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Here you go, it is the original thread on diyaudio.com http://www.diyaudio.com/...age=25&pagenumber=21 hope the link works. you will need a login to look at the pictures.

Bill
les_garten
#11 Posted : Sunday, March 22, 2009 7:18:13 AM(UTC)
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biellis wrote:
Here you go, it is the original thread on diyaudio.com http://www.diyaudio.com/...age=25&pagenumber=21 hope the link works. you will need a login to look at the pictures.

Bill


Hi,
Thanx! Looks like some interesting reading!

Les
biellis
#12 Posted : Sunday, March 22, 2009 8:28:28 AM(UTC)
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As you can tell from the dates on the original proposal is has been a low priority, I think Russ has been putting most of his efforts in the Buffalo DAC. I am hoping they will complete it soon as I have a project 9/10ths done waiting on it. I purchased a unit offered in the DIYaudio trading post made by a guy from China and while it is fairly well made and very reasonably priced but it does not offer the flexibility. I will probably use it with a simpler buffer preamp project.
Bill

Edited by user Sunday, March 22, 2009 8:53:03 AM(UTC)  | Reason: Not specified

les_garten
#13 Posted : Wednesday, March 25, 2009 3:20:14 PM(UTC)
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Hi,
I read that thread but couldn't really glean what the AC1 was all about and how it was more advanced than the JT and the Darwin. Can someone run down a list of features?

Additionally, it seems this has been vaporware so long that it should not be part of a plan.

I sent an email but have not heard much yet. I also looked over the TP site and read the JT thread. I can't seem to find a JT or Darwin for dummies PDF file?? I know it's here somewhere?

Thanx!
Les
Russ White
#14 Posted : Wednesday, March 25, 2009 6:37:02 PM(UTC)
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Hmmm, Vaporware? I prefer to call it a hobby. :) Certain projects have been postponed and shuffled around because of shifting focus. That said, Brian has some AC1 hardware on the way to me and I should have some apps together soon.

Here is the key pont to remember.

AC1 is platform, not a complete product. It is meant for you to be able to use to create you own working projects.

To that end I will provide some source code examples and such, but probbaly not complete implementations for every single project out there. There are just too many variables.

Femto is the heart of the AC1 platform, and it is USB programmable. So it is very very easy to develop firmware for it and test it out.

So, while its been a long time its certainly not a dead project. :)

Some pieces like JT2 and the AC1 board itself had to be reworked a couple of times. Add to that the excitement and my personal zeal for the ESS DACs and you can guess my hobby time has been pretty well occupied.

Anyway, I have some very real uses for AC1 myself, so I will keep on perusing it.

Cheers!
Russ

Edited by user Wednesday, March 25, 2009 6:37:33 PM(UTC)  | Reason: Not specified

glt
#15 Posted : Thursday, March 26, 2009 9:29:49 AM(UTC)
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I have started some research on a much less elegant solution than AC1, but open source. My plan is to access the OPUS and use all the software options of the DAC. Eventually I also want to access other chips.

Not trying to compete with AC1, but I'm lazy and want to use other people's software... you can find my brief research here: www.hifiduino.blogspot.com

Edited by user Thursday, March 26, 2009 9:30:29 AM(UTC)  | Reason: Not specified

Russ White
#16 Posted : Thursday, March 26, 2009 10:06:00 AM(UTC)
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AC1 is also completely open source. :) And actually quite inexpensive for a complete platform. All you will really need to add is code, and possibly a rotary encoder or two. And the code will be easy enough to copy from the open source examples I will have here. :)

You can also combine volumite and AC1 is some pretty cool ways.

I do think its great your using some initiative and doing something on your own. That's great! I encourage it!

Someone is going to have to write some code at some point. There is no getting around it. :) It can be me or you or both. :) The point is to have some fun and learn something if possible.

Cheers!
Russ

Brian Donegan
#17 Posted : Thursday, March 26, 2009 10:27:55 AM(UTC)
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We will also likely have a library of compiled HEX files of common applications. The hope is that users will add to the library for everyone to use.
glt
#18 Posted : Thursday, March 26, 2009 11:24:43 AM(UTC)
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Russ, Brian,

Thanks so much for the encouragement. That is good.

I did not have any doubt that your project will also be open source. I guess what I wanted to says is that there is a lot of software written out there that one can reuse as a library. Of course I will have to write some software (last time I wrote any software was like 15 years ago in Forth for SparcStations, so I'm really rusty), but by using the libraries, writing to an LCD is as simple as a print statement.
biellis
#19 Posted : Thursday, March 26, 2009 10:36:23 PM(UTC)
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Les,
To clarify what you can do with the AC1 looking at the board it looks like you should be able to control 3 I2c devices this may be the relay control board used on the Joshua tree or the same board to control the Darwin and I believe their DACS as well. It will drive a display board, accept infrared remote control and a couple of rotary encoders. All of their interaction dependent how you program the Femto (where do you get these names Brian's cats?)(nothing against your cats but I think that is the noise they make when they spit up a hair ball) pretty cool. I think I2C is kind of a standard and you may be able to interface it to products offered by other vendors or better yet make your own.

Bill
les_garten
#20 Posted : Monday, March 30, 2009 7:08:01 PM(UTC)
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biellis wrote:
Les,
To clarify what you can do with the AC1 looking at the board it looks like you should be able to control 3 I2c devices this may be the relay control board used on the Joshua tree or the same board to control the Darwin and I believe their DACS as well. It will drive a display board, accept infrared remote control and a couple of rotary encoders. All of their interaction dependent how you program the Femto (where do you get these names Brian's cats?)(nothing against your cats but I think that is the noise they make when they spit up a hair ball) pretty cool. I think I2C is kind of a standard and you may be able to interface it to products offered by other vendors or better yet make your own.

Bill


Hi,
Looks very "promising", I hope it may be available when I get ready to do my Preamp/Amp project.

Les
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