Author Topic: DIY gk pin 7 break out or break in - 2 PCBs available!  (Read 1766 times)

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Offline KeldAmpworks

DIY gk pin 7 break out or break in - 2 PCBs available!
« on: June 24, 2015, 08:46:31 AM »
Just moved this - I posted in the wrong place I think.

Hi Guys,

I don't post here much. What I'm showing may be already around, I've certainly seen someone drilling holes in a GR55 to achieve the same end.

I made a PCB with two functions:
Break out the pin7 of a normal GK cable at the synth end to try and avoid the noise I've experienced from the GR55's guitar out jack.

Break 'in' to the GR55 with a normal guitar signal to allow non GK guitars to talk GR55 (think you can do this natively on VG88 etc).

I ordered 3 PCBs, but mine worked first time (miracles happen!) so I have no need for the others - hopefully someone else can make use of them.

More info:
1.6mm FR4
Purple solder resist, which sounds better.
Gold Plated pads and through plating.
2 sided, through hole plated
On the break in side there are pads for an amplifier using a single SMT FET and a handful of 0805 passive components.
Board Designed to fit into a musikding.de B type box, which is their version of the Hammond 1590B
Runs from the GK 7-0-7 supply, no batteries or PSU needed.
I couldn't find the jacks that fit the board at my local supplier (farnell UK) so I've wired them floating as in the pic.

I don't want much for them, but I'd like to cover my costs in making my own. Drop me a message on here if interested, first come, first served, preferably UK peoples. :)

Happy to share the schematic, but it's pretty simple.

Rowan

Offline Elantric

Re: DIY gk pin 7 break out or break in - 2 PCBs available!
« Reply #1 on: June 24, 2015, 08:49:06 AM »
Send me a PM - I'm interested in buying a PC board  -

Offline KeldAmpworks

Re: DIY gk pin 7 break out or break in - 2 PCBs available!
« Reply #2 on: June 24, 2015, 01:07:06 PM »
One sold to Elantric. Thanks mate.

For anyone else's interest, here's a link to more information, including the schematic, on my blag/wobsite.
http://ampworks.co.uk/experiments/gr55-gk-bobbib7/


Offline ADP

Re: DIY gk pin 7 break out or break in - 2 PCBs available!
« Reply #3 on: June 25, 2015, 03:32:56 AM »
I'll take the other one if it's still available. PM me with your details.

Thanks.

Offline KeldAmpworks

Re: DIY gk pin 7 break out or break in - 2 PCBs available!
« Reply #4 on: June 25, 2015, 03:46:58 PM »
Second PCB claimed by ADP. Thank you! I didn't expect them to go this fast!

I've no plans to order any more, but if you read this and think "my life would be complete if only I had a pin7 breakout box", then drop a message below, if there are a few more people who are interested, then I'll do more next time I'm building PCBs.

Thanks again guys, happy synthing!

Offline KeldAmpworks

Re: DIY gk pin 7 break out or break in - 2 PCBs available!
« Reply #5 on: August 01, 2015, 01:07:03 PM »
Hi guys,

I've just ordered another 3 boards as someone else was interested, so I'll soon have another two available for any takers.

Thanks,

Offline whippinpost91850

Re: DIY gk pin 7 break out or break in - 2 PCBs available!
« Reply #6 on: August 02, 2015, 02:44:04 PM »
I would be interested

Offline KeldAmpworks

Re: DIY gk pin 7 break out or break in - 2 PCBs available!
« Reply #7 on: August 03, 2015, 02:11:51 AM »
Cool, drop me a pm or an email. They're on order, so they'll be about 2 weeks to get to me. :)

Offline KeldAmpworks

Re: DIY gk pin 7 break out or break in - 2 PCBs available!
« Reply #8 on: August 24, 2015, 11:30:37 AM »
Hi guys,

I've got one more PCB left, any takers?

Here's a quick video of one of the things you can do with it, inspired by conversations with one of the guys on this forum. Hopefully the link works!

EDIT:

« Last Edit: August 25, 2015, 01:57:58 AM by KeldAmpworks (bassetrox) »

Offline whippinpost91850

Re: DIY gk pin 7 break out or break in - 2 PCBs available!
« Reply #9 on: August 24, 2015, 02:05:23 PM »
Link took me to Facebook , but video not available.

Offline dfranks

Re: DIY gk pin 7 break out or break in - 2 PCBs available!
« Reply #10 on: September 09, 2015, 12:49:12 PM »



Do you still have 1 available?? I believe I would be interested. Is this just the pc board or does it contain all the parts needed to build it? What is the cost of the board, cost to build unit, etc.?  Thanks

Offline KeldAmpworks

Re: DIY gk pin 7 break out or break in - 2 PCBs available!
« Reply #11 on: September 12, 2015, 10:31:24 AM »
Hi there dfrank. The board is still available. PCB is £15 GBP +pp and I can send a link to a list of parts and where to get them. My list is UK focused, but most things are eBay able.

I did collect the bits and build one up for someone too for £45 but I don't do metalwork drilling because I don't have the tools to acheive a professional finish. :)

Send me a pm or preferably an email through my website if you'd like to discuss. :)