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Should I resurrect the ADAT interface project? [message #106118] Tue, 15 March 2011 14:20 Go to next message
Doug Wellington is currently offline  Doug Wellington   UNITED STATES
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Should I resurrect the ADAT interface project?[ 9 votes ]
1. Yes, I want a 1U rack mount ADAT interface. 9 / 100%
2. No, I prefer the MEC format. 0 / 0%
3. No, I don't use ADAT. 0 / 0%

When the PARIS newsgroup disappeared, I thought the PARIS community had finally given up, so I dropped my plans for anything more than one-off projects for myself.

Are there enough of us still around to make it worth while to resurrect these projects?

The ADAT interface is a 1U rack mount box with a connection for the EDS card and two ADAT optical interfaces.


[Updated on: Tue, 15 March 2011 14:22]

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Re: Should I resurrect the ADAT interface project? [message #106123 is a reply to message #106118] Tue, 15 March 2011 14:31 Go to previous messageGo to next message
dnafe is currently offline  dnafe   CANADA
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That sounds interesting...like a breakout box for the ADAT I/O?
Re: Should I resurrect the ADAT interface project? [message #106127 is a reply to message #106118] Tue, 15 March 2011 14:45 Go to previous messageGo to next message
Doug Wellington is currently offline  Doug Wellington   UNITED STATES
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Yes. It's a pretty simple interface. There is a direct correlation between channels from the EDS card to ADAT channels. No MEC required.

Re: Should I resurrect the ADAT interface project? [message #106129 is a reply to message #106127] Tue, 15 March 2011 15:03 Go to previous messageGo to next message
Ted Gerber is currently offline  Ted Gerber   CANADA
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Will it pass 24 bits? I've just picked up an SSL Alpha Link ADDA box. 24 channels in and out. Certainly a step up from the Paris converters, but it's an ADAT unit, and it would be great to run it in and out of Paris @ 24 bits.

Ted

Hey even if you don't get a lot of others to sign up, maybe you'd make some one offs for those who want them...
Re: Should I resurrect the ADAT interface project? [message #106130 is a reply to message #106129] Tue, 15 March 2011 15:17 Go to previous messageGo to next message
Doug Wellington is currently offline  Doug Wellington   UNITED STATES
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Yes, it works with 24 bits. Basically, I just collect bits from the EDS until I get the... (hmm, can't remember the official term) ...the one connection switches states and indicates that the channels are flopping, so I transfer those bits into the output buffer and pad with zeros if there are only 16.

(Sorry, I'm home sick today, so my brain may not be completely organized. Hope that makes sense...)


Re: Should I resurrect the ADAT interface project? [message #106132 is a reply to message #106130] Tue, 15 March 2011 15:24 Go to previous messageGo to next message
kerryg is currently offline  kerryg   CANADA
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Waiwaiwait - I use my second MEC solely to hold two ADAT cards. Does this mean I could ditch it and save four precious rack spaces in my machine room?

24 bits? OK, now we're really talking. Yes, this would be of great interest.


"... being bitter is like swallowing poison and waiting for the other guy to die..." - anon

[Updated on: Tue, 15 March 2011 15:25]

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Re: Should I resurrect the ADAT interface project? [message #106134 is a reply to message #106130] Tue, 15 March 2011 16:02 Go to previous messageGo to next message
Ted Gerber is currently offline  Ted Gerber   CANADA
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Giddy up!
Re: Should I resurrect the ADAT interface project? [message #106135 is a reply to message #106134] Tue, 15 March 2011 20:32 Go to previous messageGo to next message
Doug Wellington is currently offline  Doug Wellington   UNITED STATES
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Interesting... One of my suppliers is saying that the TOSLINK transmitter modules are discontinued... I'll look into it some more, but I may have to order some just to make sure I have stock...

Re: Should I resurrect the ADAT interface project? [message #106256 is a reply to message #106118] Fri, 15 April 2011 05:08 Go to previous messageGo to next message
Colin Simpson is currently offline  Colin Simpson   AUSTRALIA
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A "real" 24 bit interface would be great. I'd buy one of those...well worth shipping out here to Australia. Very Happy
Re: Should I resurrect the ADAT interface project? [message #106518 is a reply to message #106118] Mon, 13 June 2011 23:59 Go to previous messageGo to next message
hungaristan is currently offline  hungaristan   
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Count me in.

icon14.gif  Re: Should I resurrect the ADAT interface project? [message #106528 is a reply to message #106118] Sat, 18 June 2011 09:44 Go to previous messageGo to next message
chiefreverse is currently offline  chiefreverse   GREECE
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I 'm in too!

Chief
Re: Should I resurrect the ADAT interface project? [message #106530 is a reply to message #106118] Sun, 19 June 2011 11:31 Go to previous messageGo to next message
Will The Weirdo is currently offline  Will The Weirdo   UNITED STATES
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After thinking about it..... I want 2.
Re: Should I resurrect the ADAT interface project? [message #106536 is a reply to message #106118] Tue, 21 June 2011 15:42 Go to previous messageGo to next message
Doug Wellington is currently offline  Doug Wellington   UNITED STATES
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Well, not looking too good at the moment. I haven't found anyone who still has the ADAT chips. It's officially on the back burner until I find those chips... Sad

Re: Should I resurrect the ADAT interface project? [message #106652 is a reply to message #106536] Wed, 24 August 2011 14:59 Go to previous messageGo to next message
Doug Wellington is currently offline  Doug Wellington   UNITED STATES
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Well, interesting. I finally got a reply back from Wavefront Semiconductor. There may be hope after all!

If this doesn't work, I might have to bone up on FPGA coding...


Re: Should I resurrect the ADAT interface project? [message #106653 is a reply to message #106652] Wed, 24 August 2011 15:35 Go to previous messageGo to next message
Ted Gerber is currently offline  Ted Gerber   CANADA
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awright!
Re: Should I resurrect the ADAT interface project? [message #106655 is a reply to message #106118] Wed, 24 August 2011 20:33 Go to previous messageGo to next message
Will The Weirdo is currently offline  Will The Weirdo   UNITED STATES
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I'm still in for 2!
Re: Should I resurrect the ADAT interface project? [message #107233 is a reply to message #106118] Fri, 24 August 2012 17:29 Go to previous messageGo to next message
bradleywreed88 is currently offline  bradleywreed88   UNITED STATES
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I never saw this when you posted it, so sorry for the late response.

I would be very interested in 2 of these units if the price was decent. Is there still hope in getting the chips you needed?

What do you think the time line may be........or is this already not going to happen?


Just curious


Bradley
Re: Should I resurrect the ADAT interface project? [message #108009 is a reply to message #106118] Wed, 01 January 2014 11:20 Go to previous messageGo to next message
Doug Wellington is currently offline  Doug Wellington   UNITED STATES
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Wowsers, time flies, sorry for no updates. My youngest kid just went off to college, so now that we're empty-nesters, hopefully I'll have time to get back to work on some of these projects.

After several emails back and forth with Wavefront, they just stopped responding to my questions. Weird. Maybe they only wanted to talk to me if I was going to order 100,000 chips...

So, if anyone is interested in FPGA stuff, chapter 7 of Advanced FPGA Design by Steve Kilts is about I2S and SPDIF, so I'm hoping that will get me closer to my own ADAT implementation...

EDIT: FWIW, I'm working with the Zedboard and Avnet LX9 at the moment, and I have a MicroZed with IO Carrier on order. I'm hoping to interface with my PARIS system through the PMOD connectors...

Regards,
Doug


[Updated on: Wed, 01 January 2014 11:31]

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Re: Should I resurrect the ADAT interface project? [message #108032 is a reply to message #108009] Mon, 13 January 2014 12:56 Go to previous messageGo to next message
excelav is currently offline  excelav   UNITED STATES
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Hey Doug, I'd be interested. I'm sure you know this, but I will say it anyways. The TosLink connectors are used in different industries, so I would think that the chip or parts you are looking for are available at some distributers somewhere. I'd try to contact the company that makes the parts and find out who their distributer/dealers are. Also google the part numbers etc. It's got to be out there somewhere for replacement and repairs.

There is an idea I've had for a long time that might go with your control surface idea. Do you think it would be possible to retrofit the C-16 with motorized faders, and have a separate system with MIDI/USB ports? In other words, don't change the C-16, add to it. Have the C-16 work the way it does with the ethernet, and have a separate system for the moving faders with a USB cable connected to the computer to handle the moving fader stuff. The C-16 might have to sit a little higher with a bolt on box/frame for the additional room needed to fit any additional hardware. It might be easier than trying to build a whole new control surface??? You wouldn't have to really get into board level stuff, you would replace the faders in the C-16 and add the MIDI/USB box/ports. What do you think?

James
Re: Should I resurrect the ADAT interface project? [message #108033 is a reply to message #108032] Mon, 13 January 2014 14:10 Go to previous messageGo to next message
Doug Wellington is currently offline  Doug Wellington   UNITED STATES
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excelav wrote on Mon, 13 January 2014 13:56
Hey Doug, I'd be interested. I'm sure you know this, but I will say it anyways. The TosLink connectors are used in different industries, so I would think that the chip or parts you are looking for are available at some distributers somewhere. I'd try to contact the company that makes the parts and find out who their distributer/dealers are. Also google the part numbers etc. It's got to be out there somewhere for replacement and repairs.

The company that made the originals is Wavefront Semiconductor, used to be Alesis Semiconductor. The chips are officially "End of Life". They were supposed to be available up until November of last year, but I had no luck getting them directly from Wavefront or anyone else for that matter. The closest I had gotten was Profusion over in the UK, but I never heard back from my email inquiry to them.

Of course, I just checked ebay again and now there are at least five vendors who claim to have them! There's hope! Cool

Quote:
There is an idea I've had for a long time that might go with your control surface idea. Do you think it would be possible to retrofit the C-16 with motorized faders, and have a separate system with MIDI/USB ports? In other words, don't change the C-16, add to it. Have the C-16 work the way it does with the ethernet, and have a separate system for the moving faders with a USB cable connected to the computer to handle the moving fader stuff. The C-16 might have to sit a little higher with a bolt on box/frame for the additional room needed to fit any additional hardware. It might be easier than trying to build a whole new control surface??? You wouldn't have to really get into board level stuff, you would replace the faders in the C-16 and add the MIDI/USB box/ports. What do you think?

Well, I'm not quite sure I'm following you, but I think the hardest part would be to make a separate interface to the motorized faders. In PARIS, it appears that there's a feedback loop where the software reads the fader and then sends the commands to light the up or down arrows. Those signals would have to be intercepted and used to control the motors. At some point it really does get simpler to just reinvent the whole thing...


Re: Should I resurrect the ADAT interface project? [message #108038 is a reply to message #108033] Tue, 14 January 2014 10:02 Go to previous message
excelav is currently offline  excelav   UNITED STATES
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I moved my reply to your Control surface thread.
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