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



Joined: Jun 07, 2006
Posts: 3760
Location: Germany
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PostPosted: Sun Jun 02, 2013 10:42 pm    Post subject: Reply with quote  Mark this post and the followings unread

TheProf wrote:
One though for Fonik - could you think of leaving a larger footprint area, with perhaps multiple pinouts, (as the late Jurgen Haible did on his PCBs), for the timing caps. I have a lot of High quality 2n2 polystyrenes, (and yes - I will give batches of then out for postage), but I couldn't get them to fit. I just squeezed some 2n2 polypropylenes I had in stock into place, and I will try the COG's in future, but I think a little more flexibility in the capacitor area would be a good idea.


i get you point, and i will consider this for new designs. in fact i did it for the PS3100 resonators.

this is how i managed to fit the polysterene:

TH 555 VCO (custom)

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hodad



Joined: Jul 31, 2007
Posts: 40
Location: atlanta

PostPosted: Tue Jun 04, 2013 2:17 pm    Post subject: Reply with quote  Mark this post and the followings unread

I'm interested in two of the main pcbs.

Thanks,
Tom
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unterbit



Joined: Dec 08, 2008
Posts: 30
Location: Russia.St Petersburg

PostPosted: Fri Jun 07, 2013 3:29 pm    Post subject: Reply with quote  Mark this post and the followings unread

3x3.euro forma.please!
btw, 4046 vco are working! Thank you Matthias! and T.H. of course!
And one more question,do you have some spare Controller LFO pcb/panel left? i should engage..
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fonik



Joined: Jun 07, 2006
Posts: 3760
Location: Germany
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PostPosted: Sat Jun 08, 2013 8:10 am    Post subject: Reply with quote  Mark this post and the followings unread

unterbit wrote:
3x3.euro forma.please!
btw, 4046 vco are working! Thank you Matthias! and T.H. of course!
And one more question,do you have some spare Controller LFO pcb/panel left? i should engage..

i am currently taking orders for the LFO, since i could re-order the parts together with the CMOS ADSR

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synthcube



Joined: Dec 21, 2011
Posts: 37
Location: boston

PostPosted: Sat Jun 08, 2013 5:25 pm    Post subject: Reply with quote  Mark this post and the followings unread

Interested as well!
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muziekzen



Joined: Jun 11, 2013
Posts: 4
Location: ITALY
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PostPosted: Tue Jun 11, 2013 10:12 am    Post subject: Reply with quote  Mark this post and the followings unread

I am definitely interested in 3x circuit PCB
Thank you!
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skee



Joined: Jun 24, 2013
Posts: 2
Location: Ireland

PostPosted: Tue Jun 25, 2013 1:27 pm    Post subject: Reply with quote  Mark this post and the followings unread

I know its late in the day, but I only just arrived at this particular party! Any pcbs left by any chance?
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fonik



Joined: Jun 07, 2006
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PostPosted: Thu Jun 27, 2013 3:02 am    Post subject: Reply with quote  Mark this post and the followings unread

i started a waiting list already...
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jackdamery



Joined: Apr 26, 2010
Posts: 73
Location: UK

PostPosted: Thu Jun 27, 2013 9:44 am    Post subject: Reply with quote  Mark this post and the followings unread

Hi Fonik, Just to check was my order of 3xmain PCBs and 4xeuro PCBs included?
Thanks
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Skrog Productions



Joined: Jan 07, 2009
Posts: 788
Location: Scottish Borders
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PostPosted: Mon Jul 08, 2013 9:22 am    Post subject: Reply with quote  Mark this post and the followings unread

Hi Matthias.

order for the 12 pcbs arrived safe and well from Wiesbaden by Luftpost to Sunny Scotland.

Many many thanks Smile


Dave.

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jackdamery



Joined: Apr 26, 2010
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PostPosted: Mon Jul 08, 2013 11:52 am    Post subject: Reply with quote  Mark this post and the followings unread

7 PCBs arrived safe in Norwich Smile thanks
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skee



Joined: Jun 24, 2013
Posts: 2
Location: Ireland

PostPosted: Wed Jul 10, 2013 3:48 pm    Post subject: Reply with quote  Mark this post and the followings unread

Please put me down for 2 boards please! Very Happy
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jackdamery



Joined: Apr 26, 2010
Posts: 73
Location: UK

PostPosted: Fri Jul 12, 2013 5:21 am    Post subject: Reply with quote  Mark this post and the followings unread

TheProf wrote:
I got one batch from 'Magic Smoke Eectronics' and the others from Farnell, but it seems they only have the 2K ones in SMT, now. I future I will be using the SMT ones because it's easier to get a closer bond the to the transistor package. The could even be mounted inside an IC socket to get a close contact with a socketed dual pair, and to avoid the effects of drafts.


TheProf, how did you match the transistors? I've never done it before.
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fonik



Joined: Jun 07, 2006
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Location: Germany
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PostPosted: Tue Jul 30, 2013 5:58 am    Post subject: Reply with quote  Mark this post and the followings unread

jackdamery wrote:
TheProf, how did you match the transistors? I've never done it before.


maybe Ian Fritz' easy and elegant transistor matcher (look for at least less than 2mV, super matched pairs are more in the max 200uV region though).
Transistor Matching taken from here:
http://home.comcast.net/~ijfritz/MiscProj/misc_lnk.htm

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robboten



Joined: Nov 26, 2009
Posts: 35
Location: stockholm, sweden

PostPosted: Sun Sep 01, 2013 12:40 am    Post subject: Reply with quote  Mark this post and the followings unread

argh... did I miss the train again. I am interested in both pcb and panel if it's there is any possibility...
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fonik



Joined: Jun 07, 2006
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PostPosted: Wed Sep 04, 2013 4:21 am    Post subject: Reply with quote  Mark this post and the followings unread

i will add you to a waiting list if you don't mind.
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crashlander42



Joined: Oct 21, 2006
Posts: 292
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PostPosted: Mon Sep 09, 2013 10:06 pm    Post subject: Reply with quote  Mark this post and the followings unread

Can I get on the waiting list too? I still want 2.
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robboten



Joined: Nov 26, 2009
Posts: 35
Location: stockholm, sweden

PostPosted: Sun Sep 15, 2013 1:07 am    Post subject: Reply with quote  Mark this post and the followings unread

fonik wrote:
i will add you to a waiting list if you don't mind.


Great! I'm interested in the LFO and the ADSR as well so if it's possible with a waiting list there too I would be happy!
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nikidoesitright



Joined: Oct 19, 2013
Posts: 1
Location: austria

PostPosted: Sat Oct 19, 2013 2:56 pm    Post subject: Reply with quote  Mark this post and the followings unread

I'm highly interested in 2 PCBs!
I'd love to get on that waitinglist, will you e-mail when the PCBs are available?
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flyweight303



Joined: Sep 04, 2013
Posts: 3
Location: Praha

PostPosted: Fri Oct 25, 2013 3:02 am    Post subject: Reply with quote  Mark this post and the followings unread

Hey Fonik, i managed to get hold on 3 of your PCB and frontpanel sets. greath work. and good quality. I am interested in more 3 or 6 more sets. are there new runs planned??

Best Regards, Tim
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fonik



Joined: Jun 07, 2006
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PostPosted: Fri Nov 15, 2013 2:10 am    Post subject: Reply with quote  Mark this post and the followings unread

i could think of asking fo interest in all 3 th projects (VCO, LFO, ADSR) in january. i already sold quite a few of these PCBs/Panels and we will have to see if there was enough interest to justify a panel run.
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plecko



Joined: Jan 21, 2011
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PostPosted: Thu Nov 28, 2013 2:03 pm    Post subject: Reply with quote  Mark this post and the followings unread

2X circuit PCB's for me please.
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robboten



Joined: Nov 26, 2009
Posts: 35
Location: stockholm, sweden

PostPosted: Sun Jun 22, 2014 7:04 am    Post subject: Reply with quote  Mark this post and the followings unread

About r25. Here you say 300k but on project BOM it says 27k. Which one should I choose?

And also - 137k for eurorack, how sensitive is that?
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fonik



Joined: Jun 07, 2006
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Location: Germany
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PostPosted: Sun Jun 22, 2014 7:09 am    Post subject: Reply with quote  Mark this post and the followings unread

robboten wrote:
About r25. Here you say 300k but on project BOM it says 27k. Which one should I choose?


from the 1st post of this thread:

Quote:
BUILDING NOTES

1)
in the original schematic of the VCO from 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



robboten wrote:
And also - 137k for eurorack, how sensitive is that?

this resistor sets the amplitude of the saw output. if you wanted to stay consistent within the module and have about 10Vpp for all outputs you should go with 137k. i know it is from the E96 value series and amybe hard to get, however, you could always use a 110k and a 27k in series...

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robboten



Joined: Nov 26, 2009
Posts: 35
Location: stockholm, sweden

PostPosted: Sun Jun 22, 2014 10:14 am    Post subject: Reply with quote  Mark this post and the followings unread

Thanks. Yes, I saw that first post. But you say that it's missing in original but it's not, it says 27k. And you say 300k in that first post. It's quite different numbers too, that's why I ask. I don't know if I misunderstand you?
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