New 13 Pin breakout

[KeldAmpworks]

Hi,

There's so much great information on here that I nearly always end up posting in the wrong place! Apologires if I've done it again, admins.

For a musical project I'm working on I've decided I need full 6 string breakout from the 13 pin pickup so I've designed a new board that gives me access to all the pins. I'm certainly not the first to do it, but I'm doing it in a very simple but effective way.

There's no active electronics in the signal path, just a straight forward pin mapping of the 6 strings to 6 mono jacks and mapping of the other 13 pin functions to stomp switches and jacks.

I'm a gigging player, rather than a studio guy, so it's important to me to make something that suits that environment. For me, I'm always frustrated by not having access to the S1/S2 at my feet, so I've turned them into stompbox switches, and the GK volume into an expression socket.

There's an option to add a bipolar 7-0-7 DC power supply with on board filtering, or you can just power from a GR55 etc. It fits in a standard 1590BB box.

Uses:

• Break out 6 strings from a GK pickup to run into separate FX chains (That's what I want to do)
• Break a normal guitar into any of the 6 strings to allow monophonic use of the synth tones (Unlike my P7 breakout board, and some other products, this requires an external buffer, eg any Boss pedal)
• Replace the GK pickup synth vol control with an expression pedal.
• Replace the S1/S2 (Up/down) switches with stompbox style switches
• Break in/out of the 'normal' gtr signal, just like the P7, but without a buffer.

Shout if there's a simple feature you think should be included. Like the other board, I'm pretty much just doing this to fund my own musical needs so it's dirt cheap(!):

• May vary from image below
• Made to order
• PCB only option (£32ish)
• Assembled PCB option with undrilled box (£75ish)
• Other options POA.
• No box drilling for this one at this time. Sorry.

If you're interested please let me know. I'll be able to finalise prices when I've got an idea of purchase quantities. If there are a few people interested I should be able to do it cheaper. If there aren't, it might be slightly more.

Thanks for reading.

[billbax]

Hi KeldAmpworks,

I remember designing something similar to your project pcb in 2015.  The idea was to replace the 'new' GKP-2 Roland cable in a diecast case.  It worked well, but never bothered to take it any further.

GKP-2 in a box plus separate strings out.


ISO


Rear


Today v-synth users might find themselves better off with a standard GKP-1 breakout box, or if they only want to access separate strings out, a simple breakout cable will do. The versatile cable is only £75.00GBP, and functions as a breakout box and a cable set in one.

GKP-1 Breakout Box priced at £130.00GBP.  The optional 12 mono switch-jacks make this unit a separate strings patchbay.


Mini Breakout Cable at £75.00GBP


I hope my reply doesn't come over as some smart a**e, as there are a couple of v-guitar forum members offering a similar project to yours.

Bill

www.separate-strings.co.uk

[cags12]

You might want to include a modular design like the Cycfy Nexus box.

http://www.cycfi.com/2016/11/announcing-the-nexus/

[admin]

I once had designed a small  DIN 13 to DB25 breakout board  - but never fabricated it


required the user to use one of these




BTW - another odd adapter


Atari ST to SCART cable ( for parts only - not natively compatible with Roland / Boss GK 13 gear

http://atariage.com/forums/topic/272817-1088xel-atari-itx-motherboard-diy-builders-thread/page-12#entry3938616

[KeldAmpworks]

Thanks for the ideas guys.

I don't think you're being an ass Bill. Plug away. I'm offering a DIY kit for live use You're offering a complete product for studio use. No Biggie.

I've now got sufficient interest to cut the prices, see above.

[gumbo]

You might want to include a modular design like the Cycfy Nexus box.

http://www.cycfi.com/2016/11/announcing-the-nexus/

...and FWIW, I produced a 13-pin Synth-Linx Jack model to interface with this (now-defunct) unit...   

Peter

[admin]

...and FWIW, I produced a 13-pin Synth-Linx Jack model to interface with this (now-defunct) unit...   

Peter

What replaced the "Cycfy Nexus box.' ?

[scratch17]

Unfortunately, nothing. Cycfi just discontinued it.

[KeldAmpworks]

I've only just heard of the cycfi. Looks like Interesting stuff. LIMO connectors on a guitar though... I'd be more worried about damaging the connectors  than the guitar!

[billbax]

Hi KeldAmpworks,

Thanks for your gracious understanding with my post - I'll be more abusive in the next one

Slight correction needed in your reply...I design breakout box products for live as well as studio use.

I'm offering a DIY kit for live use You're offering a complete product for studio use.

Looking at your pcb overlay, are you going to use separate string output buffering?  A 10uF/25V or 10uF/50V elect is usually a good idea on outputs and inputs, as you never know what someone will plug into those jacks.  If you do use a capacitor as a buffer, make sure you keep to 10uF, as a lower value will give a bass cut in the frequency response.

Good luck,

Bill

[admin]

Unfortunately, nothing. Cycfi just discontinued it.

Not the first time a product goes end of life coincident with higher customer awareness
( for example  ANTARES ATG


Was waiting for the Cycfi box to finally be available at the Cycfi store ( oh well )
https://www.cycfi-research.com

[cags12]

Not the first time a product goes end of life coincident with higher customer awareness
( for example  ANTARES ATG


Was waiting for the Cycfi box to finally be available at the Cycfi store ( oh well )
https://www.cycfi-research.com

The Nexus box was available just by simply sending an email. I had the option to buy one of the last ones last week. It was overkill for my needs so I did not buy it. Instead I got the NU, XR's and the GK breakout kit.

FWIW - The Nexus is not fully discontinued like the XRs. Read Joel's updates on the Facebook group.

[vanceg]

The Nexus is going to continue.  It is not a dead product.

[mooncaine]

I contacted them twice asking about a GK-compatible pickup, or kit, or whatever. Never saw a reply nor any info at all about it except what you fellows have shared here.

[gumbo]

The Nexus is going to continue.  It is not a dead product.

...well, that's good news...   

[cags12]

...well, that's good news...   

If you are not part of the Facebook group read below.
https://www.vguitarforums.com/smf/index.php?topic=22962.msg166995#msg166995

Nexus will be part of a new reference design.

[gumbo]

I am not a member of the Facebook group (although I was invited), so thank you for the clarification.

...nothing against Cycfi, I just made a decision a long time ago that Facebook was not part of my life.

Peter

[Fheder]

Has anyone tried to create an audio interface to send a Audio signal directly from a 13-pin cable to a Toslink-ADAT cable using an Arduino or some other type of A/D converter?

My final goal is to send separate Audio signals from each guitar strings to my DAW without having to use Breakout-box or having to use 8 channels of an audio interface to do it

I have a Universal Audio Apollo Twin MKII (2 inputs) with ADAT input (expandable to 8 inputs) , so I thought that It could be great to use this to send audio signal 

https://www.youtube.com/watch?v=e5ov3q02zxo&feature=youtu.be
look at this project I found

[admin]

My final goal is to send separate Audio signals from each guitar strings to my DAW without having to use Breakout-box

The Boss GP-10 already accomplishes that  - $300 used


RTM
https://static.roland.com/assets/media/pdf/GP-10_e02_W.pdf


https://static.roland.com/assets/media/pdf/GP-10_Parameter_Guide_e02_W.pdf

Boss GP-10 USB AUDIO/midi
https://www.vguitarforums.com/smf/index.php?topic=10805.0



[WINDOWS]
Audio input/output device
Of the total audio input/output channels provided by the GP-10, there are 8 INs and 8 OUTs

[Computer WAVE IN Devices]
IN (GP-10) (Stereo Audio Output from GP-10
GK 1-2 (GP-10) (to record raw signal from  high E+B String)
GK 3-4 (GP-10) (to record raw signal from  high G+D String)
GK 5-6 (GP-10)( to record raw signal from A+Low E String)

[Computer WAVE OUT Devices]
OUT (GP-10) ( for Re-Amping)
GK 1-2 (GP-10) (to drive COSM Modeling for high E+B String - for Re-Guitaring)
GK 3-4 (GP-10) (to drive COSM Modeling for  high G+D String- for Re-Guitaring)
GK 5-6 (GP-10) (to drive COSM Modeling for  A + Low E String- for Re-Guitaring)

[vanceg]

Unfortunately, nothing. Cycfi just discontinued it.

]\

That's not the case at all. The Nexus is still available.

[vanceg]

I've only just heard of the cycfi. Looks like Interesting stuff. LIMO connectors on a guitar though... I'd be more worried about damaging the connectors  than the guitar!

The Limo connector works VERY well and is extremely resistant to damage, mainly due to it's absurdly overbult design. It really seems like a vastly better connector than the little DIN jacks...but absurdly expensive...that's it's main downfall as far as I can tell.

[Fheder]

The Boss GP-10 already accomplishes that  - $300 used


RTM
https://static.roland.com/assets/media/pdf/GP-10_e02_W.pdf


https://static.roland.com/assets/media/pdf/GP-10_Parameter_Guide_e02_W.pdf

tell me if I am wrong, the GP10 sends audio of the 6 strings on a single channel, not on 6 separate channels from each string

[admin]

tell me if I am wrong, the GP10 sends audio of the 6 strings on a single channel, not on 6 separate channels from each string

Each string on GP-10 has a separate I/O channel ( as 4 stereo pairs)

[WINDOWS]
Audio input/output device
Of the total audio input/output channels provided by the GP-10, there are 8 INs and 8 OUTs ( as 4 stereo pairs)

[Computer WAVE IN Devices]
IN (GP-10) (Stereo Audio Output from GP-10
GK 1-2 (GP-10) (to record raw signal from  high E+B String)
GK 3-4 (GP-10) (to record raw signal from  high G+D String)
GK 5-6 (GP-10)( to record raw signal from A+Low E String)

[Computer WAVE OUT Devices]
OUT (GP-10) ( for Re-Amping)
GK 1-2 (GP-10) (to drive COSM Modeling for high E+B String - for Re-Guitaring)
GK 3-4 (GP-10) (to drive COSM Modeling for  high G+D String- for Re-Guitaring)
GK 5-6 (GP-10) (to drive COSM Modeling for  A + Low E String- for Re-Guitaring)

[admin]

The Limo connector works VERY well and is extremely resistant to damage, mainly due to it's absurdly overbult design. It really seems like a vastly better connector than the little DIN jacks...but absurdly expensive...that's it's main downfall as far as I can tell.

Lemo connectors are good enough for Los Alamos  / Sandia nuclear test facilities - and good enough for VGuitar too!

https://www.lemo.com/en/application/nuclear-connector

[Fheder]

  mind blowing! thanks for this info!

Each string on GP-10 has a separate I/O channel ( as 4 stereo pairs)

[WINDOWS]
Audio input/output device
Of the total audio input/output channels provided by the GP-10, there are 8 INs and 8 OUTs ( as 4 stereo pairs)

[Computer WAVE IN Devices]
IN (GP-10) (Stereo Audio Output from GP-10
GK 1-2 (GP-10) (to record raw signal from  high E+B String)
GK 3-4 (GP-10) (to record raw signal from  high G+D String)
GK 5-6 (GP-10)( to record raw signal from A+Low E String)

[Computer WAVE OUT Devices]
OUT (GP-10) ( for Re-Amping)
GK 1-2 (GP-10) (to drive COSM Modeling for high E+B String - for Re-Guitaring)
GK 3-4 (GP-10) (to drive COSM Modeling for  high G+D String- for Re-Guitaring)
GK 5-6 (GP-10) (to drive COSM Modeling for  A + Low E String- for Re-Guitaring)