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 Forum index » DIY Hardware and Software » fonik's place
PCB offer: Thomas Henry's 555-VCO
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smidirin



Joined: May 01, 2007
Posts: 14
Location: analogfx.studio

PostPosted: Mon Feb 11, 2013 2:10 am    Post subject: Reply with quote  Mark this post and the followings unread

Hail the Master beer king ... banana ... thanks fonik
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hop.sing



Joined: Jun 11, 2011
Posts: 8
Location: Germany
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PostPosted: Wed Feb 13, 2013 2:29 pm    Post subject: Reply with quote  Mark this post and the followings unread

Hi Matthias

I am much too late, but maybe you have 4 circuit pcbs 2 Eurorack pcbs and 2 Frontpanels left?
I would love to order those...
Thanks Tobias
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fonik



Joined: Jun 07, 2006
Posts: 3759
Location: Germany
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PostPosted: Wed Feb 13, 2013 3:07 pm    Post subject: Reply with quote  Mark this post and the followings unread

unfortunately i have no front panel PCBs left.

i will create a waiting list and then re-order what's needed as soon as the dust settled.

i will not be able to re-order the actual front panels, though. they are much too pricey, and it gets ridiculous when ordered in lower quantities...

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matthias
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hop.sing



Joined: Jun 11, 2011
Posts: 8
Location: Germany
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PostPosted: Wed Feb 13, 2013 3:13 pm    Post subject: Reply with quote  Mark this post and the followings unread

Thanks for the reply..
Well just the circuit pcbs would be okay then, if I would have to order the frontpanels myself. I wired quite a few modules, this will work out, too.
Thanks Tobias
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stahlblau



Joined: Jan 24, 2008
Posts: 14
Location: Herford / Germany

PostPosted: Thu Feb 14, 2013 9:34 pm    Post subject: Reply with quote  Mark this post and the followings unread

The Boards arrived Very Happy

Many thanks!
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fonik



Joined: Jun 07, 2006
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Location: Germany
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PostPosted: Fri Feb 15, 2013 4:36 pm    Post subject: Reply with quote  Mark this post and the followings unread

hi guys,

i know quite a lot of you are waiting desperately for an email or a PM from me, while others got their PCBs already. so what's going on?

as stated before, i received the PCB, alas, i did not receive the front panels yet. they should arrive next week.

so some of you already received PCBs for the VCO. here is a important building note, i will incorporate it into the 1st post, too:

BUILDING NOTES

1)
in the original schematic of the VCO frmo thomas henry we three times a resistor R26, whereas R25 is missing completely.
so here are the values corresponding to the PCB labeling that are not covered correctly by the schematic/parts list:
R25 - 300k
R26 - 39k
R55 - 5.6k

2)
when powering from 12V lower R27 to 33k (otherwise you will not be able to get a decent level for your sine wave)

3)
when you have a hard time finding a precision trimmer wit 25k, just use 50k. does the job as well.

4)
C4 is the timing cap. use a nice C0G/NP0 or a mica for better stability.

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cheers,
matthias
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bubzy



Joined: Oct 27, 2010
Posts: 555
Location: United Kingdom
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PostPosted: Fri Feb 15, 2013 6:22 pm    Post subject: Reply with quote  Mark this post and the followings unread

R26 is correctly labelled in the parts list
just need to order some missing resistors, who'd have thought i didn't have them all by now ? Very Happy
edit : ooooooh i see about R26. :p went ok for me anyway.

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bod



Joined: Apr 28, 2009
Posts: 148
Location: Glasgow

PostPosted: Sat Feb 16, 2013 11:43 am    Post subject: Reply with quote  Mark this post and the followings unread

Got my boards fonik, thank you very much!!
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lucid



Joined: Dec 03, 2012
Posts: 20
Location: Slovakia, EU

PostPosted: Mon Feb 18, 2013 10:00 am    Post subject: Reply with quote  Mark this post and the followings unread

Boards safely arrived
thanks fonik thumb up
cant wait to start testing period...
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marvkaye



Joined: Mar 14, 2011
Posts: 225
Location: Fla

PostPosted: Mon Feb 18, 2013 2:44 pm    Post subject: Reply with quote  Mark this post and the followings unread

Got my boards the end of last week as well... thanx again for doing these. Love that TH stuff!

<marv>
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fonik



Joined: Jun 07, 2006
Posts: 3759
Location: Germany
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PostPosted: Mon Feb 18, 2013 3:00 pm    Post subject: Reply with quote  Mark this post and the followings unread

front panels came in today, for both the VCO and the LFO. now it's getting serious!

BTW i finished the layout for the CMOS ADSR prototype PCBs (they will provide the original thomas henry circuit + stage gate outpts, and an end trigger). i will order them as soon as i got all the PCBs and front panels out...

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cheers,
matthias
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comrade_zero



Joined: Mar 05, 2009
Posts: 50
Location: arizona
Audio files: 4

PostPosted: Tue Feb 19, 2013 11:03 pm    Post subject: boards arrived Reply with quote  Mark this post and the followings unread

Boards arrived here in the Southwestern United States. They look great, I can't wait to get them stuffed. Thanks again, Fonik, this is top-notch work at a fantastic price!
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DES



Joined: Feb 28, 2003
Posts: 677
Location: Oxford, NJ
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PostPosted: Tue Feb 19, 2013 11:42 pm    Post subject: Reply with quote  Mark this post and the followings unread

Got my boards today!

Thanks Matthias! Very Happy

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elmegil



Joined: Mar 20, 2012
Posts: 1489
Location: Chicago
Audio files: 14

PostPosted: Thu Feb 21, 2013 5:21 pm    Post subject: Reply with quote  Mark this post and the followings unread

Got mine today, thanks Fonik!
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donpachi



Joined: Jul 16, 2009
Posts: 58
Location: Marburg
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PostPosted: Fri Feb 22, 2013 4:19 am    Post subject: Reply with quote  Mark this post and the followings unread

Boards arrived yesterday Cool
Thanks a bunch!!!
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jackdamery



Joined: Apr 26, 2010
Posts: 72
Location: UK

PostPosted: Fri Feb 22, 2013 7:05 am    Post subject: Reply with quote  Mark this post and the followings unread

Hey, received mine two days ago. Thanks! I'm not quite sure of the difference between the eurorack and circuit pcbs. (Not even sure which version I have, I haven't been synth building for a couple of years). I was also wondering if I might be able to order a couple more?

Thanks,
Jack
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roborobert



Joined: Jan 15, 2013
Posts: 24
Location: austria

PostPosted: Fri Feb 22, 2013 11:48 am    Post subject: Reply with quote  Mark this post and the followings unread

pcbs arrived today Smile
much thanks fonik!

best, rob
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fonik



Joined: Jun 07, 2006
Posts: 3759
Location: Germany
Audio files: 23

PostPosted: Mon Feb 25, 2013 1:55 am    Post subject: Reply with quote  Mark this post and the followings unread

jackdamery wrote:
Hey, received mine two days ago. Thanks! I'm not quite sure of the difference between the eurorack and circuit pcbs. (Not even sure which version I have, I haven't been synth building for a couple of years). I was also wondering if I might be able to order a couple more?

Thanks,
Jack

the curcuit PCB is the main PCB containing the actual circuit, providing MTA-100 connector footprint for wiring this to any format (eurorack, frak, 5U, or whatever).
the eurorack front panel components PCB is just an add-on PCB that would be piggyback mounted to the curcuit PCB, providing footprints for PCB mounted jacks and pots follwing the eurorack format, thus eliminating any need for manual wiring.

currently i am sold out and cannot take any orders. when the dust has settled i could re-order PCBs as needed.
i will not be able to re-order frontpanels. they are very expensive in low quantities.

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cheers,
matthias
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loderbast



Joined: Jan 31, 2013
Posts: 3
Location: germany

PostPosted: Mon Feb 25, 2013 12:45 pm    Post subject: Reply with quote  Mark this post and the followings unread

got mine today. thanks a lot fonik


this will be my first vco (and my 3rd module) Cool
i'll start soldering now...

Paul
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Heavy Metal Kid



Joined: Nov 05, 2012
Posts: 18
Location: Oslo

PostPosted: Thu Feb 28, 2013 5:12 pm    Post subject: Reply with quote  Mark this post and the followings unread

Got my panels and PCBs today, only three days after I paid. Thanks, Fonik!
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LektroiD



Joined: Aug 23, 2008
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PostPosted: Sat Mar 02, 2013 8:12 am    Post subject: Reply with quote  Mark this post and the followings unread

I need to order the panel hardware for this and the LFO, however, I can't seem to find the right stuff... I already have switches, but the lugs won't fit through the board (I was thinking of squashing them with pliers)... The pots are the real problem. Anyone got any clue as to what part #'s I need to order?

I'm in the UK, so I would prefer to use Rapid if possible, as I can't afford Mouser's shipping prices. If anyone has already done an order with Rapid for these parts, and knows the order number, please let me know...

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fonik



Joined: Jun 07, 2006
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PostPosted: Sun Mar 03, 2013 1:51 pm    Post subject: Reply with quote  Mark this post and the followings unread

the sockets are available from thonk.

i don't think rapid has any 9mm potentiometers at all Shocked

try banzai (berlin):
http://www.banzaimusic.com/Alpha-9mm-100k-lin.html

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cheers,
matthias
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lucid



Joined: Dec 03, 2012
Posts: 20
Location: Slovakia, EU

PostPosted: Sun Mar 03, 2013 3:54 pm    Post subject: Reply with quote  Mark this post and the followings unread

fonik wrote:

1)
in the original schematic of the VCO frmo thomas henry we three times a resistor R26, whereas R25 is missing completely.
so here are the values corresponding to the PCB labeling that are not covered correctly by the schematic/parts list:
R25 - 300k
R26 - 39k
R55 - 5.6k

I don't have right now 300k, could be possibility to use 270k or 330k? if yes, what will happen in such case?
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elmegil



Joined: Mar 20, 2012
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PostPosted: Sun Mar 03, 2013 6:43 pm    Post subject: Reply with quote  Mark this post and the followings unread

Do you have 2 150Ks? Or other combinations that add up to 300k? i've done that a few times, you wire a pair together and then put the other leg of each through the PCB. Solder the top side pair together as well, of course.
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LektroiD



Joined: Aug 23, 2008
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PostPosted: Sun Mar 03, 2013 7:08 pm    Post subject: Reply with quote  Mark this post and the followings unread

fonik wrote:
the sockets are available from thonk.

i don't think rapid has any 9mm potentiometers at all Shocked

try banzai (berlin):
http://www.banzaimusic.com/Alpha-9mm-100k-lin.html

Jacks ordered

Banzai seem quite expensive for their pots. Would this fit?
http://uk.farnell.com/jsp/search/productdetail.jsp?id=1191742&_requestid=24555

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