#1603705 - 02/28/19 05:47 PM
Bear are you still around? Any electronic Engineers in here?
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Canefire_ian
Planeteer
Registered: 10/23/18
Posts: 51
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@bear or other,
I came across a device that I want to use with my VS2480 and wanted to pick your brain regarding it. A company called MiniDSP makes an ADAT to USB converter called the USBstreamer. It streams 8 channels of Adat to USB.
I am going to buy this device and run a cable from your rbus to adat converter to the usb streamer.
device is linked here.... https://www.minidsp.com/products/usb-audio-interface/usbstreamer-kit-box
I was wondering if you had any interest in creating an RBUS to USB- using this device as a platform. I am thinking that since much of the parts are already in the USBstreamer it might not be too difficult to cut out the middle man (ie the adat cable) In essence if I purchased this usbstreamer and mailed it to you and paid you for your service ( or the trial and error ) in somehow connecting or reconfiguring this device
to work with the RBUS port.
That is of course if you think it would work. Also whether it could be created by you for a reasonable cost.
Thanks, for you time.
Cheers,
Ian
PS Has any one in here tried the minidsp USBstreamer?
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#1603720 - 02/28/19 06:55 PM
Re: Bear are you still around? Any electronic Engineers in here?
[Re: Canefire_ian]
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mobofsquirrels
Debaser
Planeteer
Registered: 09/23/10
Posts: 791
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For those of us who aren't very smart, can you explain what the goal of this is? Would this allow you to export tracks through USB?
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#1603747 - 02/28/19 09:10 PM
Re: Bear are you still around? Any electronic Engineers in here?
[Re: mobofsquirrels]
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Canefire_ian
Planeteer
Registered: 10/23/18
Posts: 51
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Hi Mob,
The goal is to future proof the roland VS RBUS port as best we can. BEAR was gracious enough to create the RBUS adapter. His RBUS adapter saved me a lot of money and time. Maybe he or someone else can now grant easy streaming thru usb.
More specifically the goal is 8 tracks out of the VS to a laptop via USB. Thus multiple WAV file recording and thus easy WAV file transfer without ADAT lightpipe devices between VS and computer.
Cheers,
Ian
Edited by Canefire_ian (02/28/19 09:12 PM)
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#1603748 - 02/28/19 09:17 PM
Re: Bear are you still around? Any electronic Engineers in here?
[Re: mobofsquirrels]
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BmC
Planeteer
Registered: 04/10/01
Posts: 12596
Loc: Bear River, Nova Scotia, Canad...
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Well I am the smartest person here on the planet, I don't mean the VSPlanet, and I am here to tell you that this is just another attempt at re-inventing the wheel. Believe me!
_________________________
"I just love how Scoot is so fucking clueless that whenever someone gives his "music" an obviously sarcastic positive review, he actually thinks they are being sincere." 
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#1603854 - 03/01/19 01:58 PM
Re: Bear are you still around? Any electronic Engineers in here?
[Re: BmC]
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Canefire_ian
Planeteer
Registered: 10/23/18
Posts: 51
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@ BmC thanks for sharing.
Hi everyone else reading this thread. Please feel free to brainstorm if you have technical knowledge to share. Or if you have specific examples from attempts.
Cheers,
Ian
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#1603863 - 03/01/19 03:19 PM
Re: Bear are you still around? Any electronic Engineers in here?
[Re: Canefire_ian]
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BmC
Planeteer
Registered: 04/10/01
Posts: 12596
Loc: Bear River, Nova Scotia, Canad...
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Humour Ian, humour. I agree this would be a good idea, especially for those who work on a laptop as well, myself included.
_________________________
"I just love how Scoot is so fucking clueless that whenever someone gives his "music" an obviously sarcastic positive review, he actually thinks they are being sincere."
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#1603865 - 03/01/19 03:23 PM
Re: Bear are you still around? Any electronic Engineers in here?
[Re: BmC]
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Wish
🌴 VSP Moderator 🌵
Planeteer
Registered: 09/09/00
Posts: 12080
Loc: Phoenix, AZ
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It's been almost 3 years since bear posted here, so you probably will not get a response.
I hope he is doing okay.
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#1603871 - 03/01/19 04:02 PM
Re: Bear are you still around? Any electronic Engineers in here?
[Re: Wish]
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Canefire_ian
Planeteer
Registered: 10/23/18
Posts: 51
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@ Wish, I sent him an email to his personal account a while ago. I have not heard back from him. So we will see. There might be others among us who can help.
@BmC. I got the humor. We're good. The forum needs some levity.
Back on topic. I have been searching for an engineer in the Washington DC area. Since I have Bear's converter I am just waiting on the miniDSB usbstreamer to arrive. I want to show both to an engineer and bring along my VS2480 and see if they can quote me a price.
Bear's design looks so similar. Even if he would not do it maybe he can provide info so that another can understand the configurations.
Cheers,
Ian
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#1603879 - 03/01/19 05:02 PM
Re: Bear are you still around? Any electronic Engineers in here?
[Re: Canefire_ian]
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bear
Planeteer
Registered: 10/25/99
Posts: 6638
Loc: abq,nm,usa
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Hey Ian
I occasionally cruise through here...
A long time ago I bought one of those USBStreamer devices - if you look through their forums you might even see me posting some questions about it...
Been a long time but my recollection was that it worked - although the drivers were a bit touchy
It should work ok as an ADAT interface into a computer following my adapter board...
I actually built a RBUS to I2S interface if I am remembering correctly which allowed it to be directly connected to my VM3100 using a CPLD breadboard setup.
You lose the ADAT functionality when you put I2S firmware in the USBStreamer though. It is one or the other
I think I have the whole thing in a junk box somewhere.
But it would be way too much trouble and expense for me to really make one of these as a product
Your best bet is gamble the $100 and try is as a normal ADAT interface following my adapter. It should work ok as long as your setup gets along with the drivers.
Or spring a few hundred more and get a real interface supporting ADAT from focusrite or RME or similar and get something with more functionality that will work well
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#1603899 - 03/01/19 07:25 PM
Re: Bear are you still around? Any electronic Engineers in here?
[Re: bear]
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Canefire_ian
Planeteer
Registered: 10/23/18
Posts: 51
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Hi Bear,
Thanks for the reply. Is there anything proprietary in the make up of the chips on your converter?
Or is it the case where the RBUS port is simply wired differently than a regular db25 port - thus the signal coming out is nothing proprietary?
Do you have a schematic you can share of your converter?
I think there are enough people interested in this build and all the info we can get from you will help.
I don't want to badger you regarding the build. If you say it is too much trouble then I take you at your word. Life is short and I am sure you have other things to do with your time.
However you still may be able to provide valuable instruction or advice.
Cheers,
Ian
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#1603905 - 03/01/19 08:03 PM
Re: Bear are you still around? Any electronic Engineers in here?
[Re: Canefire_ian]
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bear
Planeteer
Registered: 10/25/99
Posts: 6638
Loc: abq,nm,usa
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RBUS (roland only digital signaling interface) and I2S (an industry standard interface, and is available on the USBStreamer) are very different in terms of how bits are clocked and timing of various events in the protocol.
I built a fairly complicated digital re-clocking circuit in a CPLD to interface between the two. (A CPLD is special programmable logic chip that can be configured to be different logic circuits)
You have to carefully study the timing diagrams of the two to figure out how to do it
I MIGHT be able to dig up my verilog code for making the CPLD if I looked around in some backups.....
Then you need to know enough to compile the code and burn it into a CPLD... and then build a circuit board that interconnects everything...
In the end the effort is really not worth it IMHO... there just are not enough users of RBUS products to justify the efforts... and as time goes by there will be fewer and fewer since even roland no longer uses it
Even when I built the ADAT adapter, RBUS was in more use and I only sold 50 or so. Basically broke even on cost and made about $2 an hour for my time LOL
Just get yourself an audio interface that supports ADAT into a PC or MAC and hook up my ADAT adapter to it - the USBStreamer is certainly a cheap one, but as I said, I don't remember their drivers being up to quality of say a much more expensive RME, you might have to fiddle around a bit
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#1603915 - 03/01/19 09:36 PM
Re: Bear are you still around? Any electronic Engineers in here?
[Re: bear]
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BmC
Planeteer
Registered: 04/10/01
Posts: 12596
Loc: Bear River, Nova Scotia, Canad...
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would a firewire to usb connector work? as in vfire to usb. vfire should have been usb, not firewire.
Edited by BmC (03/01/19 09:42 PM)
_________________________
"I just love how Scoot is so fucking clueless that whenever someone gives his "music" an obviously sarcastic positive review, he actually thinks they are being sincere."
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#1603918 - 03/01/19 09:57 PM
Re: Bear are you still around? Any electronic Engineers in here?
[Re: BmC]
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Wish
🌴 VSP Moderator 🌵
Planeteer
Registered: 09/09/00
Posts: 12080
Loc: Phoenix, AZ
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Well, looky who showed up.
Hello, stranger!
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#1674858 - 08/09/20 09:29 PM
Re: Bear are you still around? Any electronic Engineers in here?
[Re: bear]
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UnderTheStairs
Space Cadet
Registered: 08/08/20
Posts: 2
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Hi Bear,
I've sent you an email regarding your RBUS ADAT adapter - if you have any left or you're willing to make another I'd happily purchase one from you. I have an XV-5080 and I'd like to utilise the ADAT outs. It's virtually impossible to find a DIF-AT24 box online.
And to any users here that bought one from Bear and are looking to now sell it please replay here or DM me. Also if you're selling a DIF-AT24 box, please get in touch as you have a buyer here waiting.
Thanks.
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#1674914 - 08/10/20 03:54 AM
Re: Bear are you still around? Any electronic Engineers in here?
[Re: UnderTheStairs]
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C Jo Go
EMERITUS ~ VS Roland
Loquacious Planeteer
Registered: 11/05/01
Posts: 38260
Loc: carmel valley,ca
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Good to hear from ya BEAR ~!! -- Appreciate all you did for us at the studio ---years back ~!
_________________________
self-described "non-musician"
**( ͡~ ͜ʖ ͡° )**
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#1674942 - 08/10/20 01:59 PM
Re: Bear are you still around? Any electronic Engineers in here?
[Re: C Jo Go]
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bear
Planeteer
Registered: 10/25/99
Posts: 6638
Loc: abq,nm,usa
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LOL CJo if you look at the dates, my post above was from a year and a half ago
But - I am still here, just hiding out in my little mountain house... masking up and going to the grocery store occasionaly. Turning into a senior citizen.... Don't really post here but still cruise through seeing what is going on occasionaly
UTSTairs - no I have none and no plans to make more. As a matter of fact about 2 weeks ago a guy contacted me and wanted to know if I could give him any info on it - I dug around in a junk box and found a few unstuffed boards and a few left over parts and sold it all to him in a bundle.
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#1674945 - 08/10/20 02:11 PM
Re: Bear are you still around? Any electronic Engineers in here?
[Re: bear]
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uptildawn
Planeteer
Registered: 12/15/01
Posts: 9108
Loc: on land
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Nice to know that you're still around and well, bear!!
You're missed, I'm sure.
_________________________
uptildawn
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#1674967 - 08/10/20 05:46 PM
Re: Bear are you still around? Any electronic Engineers in here?
[Re: bear]
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C Jo Go
EMERITUS ~ VS Roland
Loquacious Planeteer
Registered: 11/05/01
Posts: 38260
Loc: carmel valley,ca
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LOL CJo if you look at the dates, my post above was from a year and a half ago
But - I am still here, just hiding out in my little mountain house... masking up and going to the grocery store occasionaly. Turning into a senior citizen.... Don't really post here but still cruise through seeing what is going on occasionaly
Thats what we so like about you :: Timeless ~! 
_________________________
self-described "non-musician"
**( ͡~ ͜ʖ ͡° )**
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#1675016 - 08/10/20 10:57 PM
Re: Bear are you still around? Any electronic Engineers in here?
[Re: C Jo Go]
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bear
Planeteer
Registered: 10/25/99
Posts: 6638
Loc: abq,nm,usa
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BTW - I am happy to give a copy of the schematic for this device if someone wants to build it on their own.. it is not terribly complicated, a good technician with soldering skills could build one up on perfboard pretty easily. Parts are pretty easily available on ebay and normal electronic parts houses like digikey or mouser.
Just email me and I will send you a pdf - I do not read this BBS all the time so email is more reliable way to get ahold of me.
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#1917532 - 07/26/24 04:14 PM
Re: Bear are you still around? Any electronic Engineers in here?
[Re: bear]
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MartinVS
Planeteer
Registered: 03/19/07
Posts: 36
Loc: The Netherlands
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@bear
@bear
I'm interested in the schematics of the rbus to adat converter. At least to find out how to convert the rbus signals to I2S. A Teensy might be able to do the trick turning the VS2480 into a USB audio card.
Yes, I'm the original madman that inspired the adat interface 
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#1918147 - 07/28/24 04:56 PM
Re: Bear are you still around? Any electronic Engineers in here?
[Re: MartinVS]
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bear
Planeteer
Registered: 10/25/99
Posts: 6638
Loc: abq,nm,usa
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Martin - pm an email address and I will send you schematic of the adat/rbus adapter.
It is based on the COOLAUDIO V1401 and V1402 ICs - they bought the design from the original IC company - ICs seem to be pretty available on EBAY - direct from company you need to buy a big quantity
The I2S interface is a little different from the RBUS if I am remembering correctly, but very similar
The spec sheets on the ICs have all the timing information on how the RBUS hooks up
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