J.Haible's Living VCO for Eurorack

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sammy123
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Post by sammy123 » Tue Jun 10, 2014 2:44 pm

Nice work :party:

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Barcode
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Post by Barcode » Wed Jun 11, 2014 1:53 am

I was able to test the driver tonight and it works just as expected. The vibrato adds just an awesome effect to this VCO.

I think I'm at the point where I can say the VCO Core and Driver PCB's are in correct working order. I hope everyone has fun building their's.

I plan to add more demos once I finish building the last 2 VCO's. This is such a fantastic VCO!

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Barcode
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Post by Barcode » Wed Jun 11, 2014 2:18 am

Here are the most recent BoM's. All of the components are the same just a couple designators are different.

June 19: I made a change to the driver BoM. The Octave trimmers post were missing. There was also an extra 100n 2.5mm cap listed.

July 5: Updated the BoM's to show the correct pot types.
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Last edited by Barcode on Sat Jul 05, 2014 9:27 am, edited 5 times in total.

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samuraipizzacat29
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Post by samuraipizzacat29 » Wed Jun 11, 2014 8:07 am

this is great. thank you guys for being so forthcoming and dedicated to this thread so all of us can share in some diy glory :)
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logicgate
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Post by logicgate » Wed Jun 11, 2014 8:28 am

@samuraipizzacat

Glad you enjoyed mate!



Was checking the BOM, noticed you left the 10K as the pot for the coarse frequency. I used a 100K pot and thought the result was very good, 10K would be for a 10 turn pot.

I haven't tested with a normal 10K pot, but if you used one and it works as expected then it's ok! :tu:


EDIT:

Can't wait to see your demos with the complete set! :yay:

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Barcode
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Post by Barcode » Wed Jun 11, 2014 11:05 am

As far as I can tell the 10k pot works completely fine. It can go from the LFO range to nearly inaudible highs.

I'm hoping to get the last 2 built up and have everything wired by the weekend.

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Barcode
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Post by Barcode » Wed Jun 11, 2014 11:06 am

I had an extra set of PCB's and they are now "Gone".
Last edited by Barcode on Fri Jun 13, 2014 11:02 am, edited 1 time in total.

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Phetus
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Post by Phetus » Fri Jun 13, 2014 9:12 am

Gone?

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Randy
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Post by Randy » Fri Jun 13, 2014 9:54 am

I was wondering that too. Where's he gone?

Randy

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Barcode
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Post by Barcode » Fri Jun 13, 2014 11:02 am

Check that post now. :lol:

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Randy
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Post by Randy » Fri Jun 13, 2014 11:11 am

Ahhh. Now it all makes sense.

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Barcode
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Post by Barcode » Fri Jun 13, 2014 7:41 pm

After looking at the driver PCB the tune pot might be backwards.... I plan on trying it tonight and I will report back.... Sorry.

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Barcode
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Post by Barcode » Sat Jun 14, 2014 11:01 am

I confirmed that the Tune pot on the driver reacts backwards... Turning CW the pitch goes down and CCW the pitch goes up. I'm in the process of adjusting the gerber files to apply the fix. Literally it is just swapping to pads.

If you already ordered your PCB's it's a simple fix. Just 2 trace cuts and 2 oops wires. I'll post a picture of the modification I did on mine a little later. Sorry guys...

Here is the fix for the tuning pot. This only applies to the original version of the driver PCB. If you are using the gerbers below the fix was already added.

Image
Last edited by Barcode on Mon Jun 16, 2014 12:15 pm, edited 1 time in total.

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Barcode
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Post by Barcode » Sat Jun 14, 2014 11:11 am

Here are the most recent gerber files.
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Randy
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Post by Randy » Sat Jun 14, 2014 12:00 pm

Barcode wrote:I confirmed that the Tune pot on the driver reacts backwards... Turning CW the pitch goes down and CCW the pitch goes up. I'm in the process of adjusting the gerber files to apply the fix. Literally it is just swapping to pads.

If you already ordered your PCB's it's a simple fix. Just 2 trace cuts and 2 oops wires. I'll post a picture of the modification I did on mine a little later. Sorry guys...
No big deal. As long as it's documented, little adjustments like this shouldn't impact even a ham-fisted solderer like me.

Randy

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negativspace
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Post by negativspace » Sat Jun 14, 2014 11:58 pm

Stuff like that happens. Easy fix is an easy fix.

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InfraXpert
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Post by InfraXpert » Mon Jun 16, 2014 12:50 am

I have ordered the PCBs for the EU-zone today.
The order is based on the latest Gerbers.
If you want to know if you are on the order and the amount please check page 29 where you find an updated list.
I will calculate the exact price and send everyone on the list a PM.
Really good music starts with a solder iron

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mechie
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Post by mechie » Mon Jun 16, 2014 7:29 am

InfraXpert wrote:I have ordered the PCBs for the EU-zone today...
Awesome pie full of awesomeness!
:yay:

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Synthsense
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Post by Synthsense » Mon Jun 16, 2014 8:41 am

InfraXpert wrote:I have ordered the PCBs for the EU-zone today.
The order is based on the latest Gerbers.
If you want to know if you are on the order and the amount please check page 29 where you find an updated list.
I will calculate the exact price and send everyone on the list a PM.
Yes Sir! :wookie: :bop: :zen:

Jop
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Post by Jop » Mon Jun 16, 2014 9:43 am

Great news InfraXpert!

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Maco
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Post by Maco » Mon Jun 16, 2014 9:57 am

who is taking orders to USA????

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Phetus
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Post by Phetus » Mon Jun 16, 2014 10:43 am

Synthsense wrote:
InfraXpert wrote:I have ordered the PCBs for the EU-zone today.
The order is based on the latest Gerbers.
If you want to know if you are on the order and the amount please check page 29 where you find an updated list.
I will calculate the exact price and send everyone on the list a PM.
:wookie:
My sentiments exactly!

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Barcode
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Post by Barcode » Mon Jun 16, 2014 11:15 am

I finished building up my 2nd and 3rd cores this weekend and they turned out great.

I was also able to get them calibrated. I was able to get they to track over 5 octaves with barely any turned of the trimmers. Now I just need to finished wiring everything up and I will post some demos.

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logicgate
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Post by logicgate » Mon Jun 16, 2014 2:05 pm

Barcode wrote:I finished building up my 2nd and 3rd cores this weekend and they turned out great.

I was also able to get them calibrated. I was able to get they to track over 5 octaves with barely any turned of the trimmers. Now I just need to finished wiring everything up and I will post some demos.

:bananaguitar: :bacon: :goo: :deadbanana: :goo: :bacon: :bananaguitar:

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oberkorn
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Post by oberkorn » Wed Jun 18, 2014 11:52 am

InfraXpert: great news, really looking forward to this :party:

oh and loudestwarning/badproducer: please msg me about teh panel
you have to pay for the music but the noise is free

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