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 Forum index » DIY Hardware and Software » fonik's place
3rd run for Thomas Henry's 555-VCO and Controller LFO
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fonik



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

PostPosted: Sat Jan 11, 2014 4:39 am    Post subject: 3rd run for Thomas Henry's 555-VCO and Controller LFO
Subject description: taking orders until 26 JAN 14
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hi all,

due to several requests i promised to announce another run of Circuit PCBs, frontpanel components PCBs (eurorack) and eurorack Frontpanels for Thomas Henry's latest Projects (VCO and LFO).

so here we go. i will keep orders until 26 JAN 14.
As always i won't take any money until the goods are ready for delivery.
Please, tell me exactly what you wanted/needed, i.e.
"1 complete set of VCO PCBs/Panels"
or
"2 circuit VCO PCBs
+ 1 frontpanel PCB
+ 1 euro frontpanel"

you get the idea...

don't hesitate to contact me if you are interested in a completed module(handmade for you).

for the Eurorack Frontpanels i would need at least inquiries for a minimum of 30pcs, this is where the proce break kicks in. For less than 30 frontpanels i could not keep the price.

more details about the nice 555-VCO:
http://electro-music.com/forum/topic-56038.html

more info about the awesome Controller LFO:
http://electro-music.com/forum/topic-55470.html

pricing unchanged:
each PCB (circuit or frontpanel) = 7.50 EUR (~10.-USD)
printed front panel = 10.-EUR (~13.USD)
shipping international:
1 PCB = 2.-EUR (~3.-USD)
2+ PCBs = 4.-EUR (~6.-USD)
shipping deutschland:
1 PCB = 1.-EUR, 2+ PCBs = 2.-EUR

Posted Image, might have been reduced in size. Click Image to view fullscreen.

Posted Image, might have been reduced in size. Click Image to view fullscreen.
TH DIY Modules by fonitronik, on Flickr
__________

555-VCO 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:
R13 = 2k
R27 = 22k
R33 = 137k

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.

5)
Parts for the Control PCB
for the pots any vertical mounted 3-pin 9mm pot should do, i used alpha and alps (for the values needed refer to thomas' schematic).
for the jacks i used the PJ301-BM. there is a new high quality version available with berillium copper from
THONK (Europe)
or
ERTHENVAR (USA)

to connect the control board to the cicuit board you will need single row headers and receptables.

if you build the VCO w/o the eurorack frontpanel components PCB you will have to manually wiring it up, which is a very reliable and easy to service solution IMHO. here is a diagram showing how the MTA-100 headers refere to the components:
Posted Image, might have been reduced in size. Click Image to view fullscreen.

for troubleshooting it might be helpful to have the silkscreen:
Posted Image, might have been reduced in size. Click Image to view fullscreen.
__________

Controller LFO BUILDING NOTES:

the chart below shows how to wire the potentiometers and the jacks, if you don't use the front panel components PCB:
Posted Image, might have been reduced in size. Click Image to view fullscreen.

ATTENTION: the PCB omits diode D2. i found the trigger to be fine without it.
however, if you experience occasional double triggers, solder it in parallel to R44.

ATTENTION: the P-JFET 2N5461 comes in different pinouts!
so check the datasheet of the specific brand you use!
(thanks to rosch for this find)

and here is the silkscreen of the circuit PCB:
Posted Image, might have been reduced in size. Click Image to view fullscreen.

_________________
Posted Image, might have been reduced in size. Click Image to view fullscreen.
cheers,
matthias
____________
fonitronik at
FlickR (pix) / SoundCloud (sounds) / YouTube (vids) / Vimeo (vids) / facebook (news)

Last edited by fonik on Tue Jul 08, 2014 3:08 am; edited 5 times in total
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StormB



Joined: Aug 15, 2013
Posts: 6
Location: Germany

PostPosted: Mon Jan 13, 2014 1:51 am    Post subject: Reply with quote  Mark this post and the followings unread

Hi
bin mit 2xLFO Platinen dabei
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bod



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

PostPosted: Mon Jan 13, 2014 7:50 am    Post subject: Reply with quote  Mark this post and the followings unread

2x lfo printed front panels
2x vco printed front panels

I should have ordered these the first time along with the pcb's!!

Cheers,

Bod
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scriptstyle



Joined: Jan 22, 2008
Posts: 250
Location: nj

PostPosted: Tue Jan 14, 2014 9:10 am    Post subject: Reply with quote  Mark this post and the followings unread

^agreed

I am down for
2X VCO
1X LFO
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adnauseam



Joined: Mar 27, 2013
Posts: 142
Location: Manitoba, Canada

PostPosted: Thu Jan 16, 2014 1:39 pm    Post subject: Me too Reply with quote  Mark this post and the followings unread

My first eurorack purchase!

I'd take 2 of each PCB
(4x pcb = 40 USD)

and 2 of each PRINTED front panel
(4x panel = 52 USD)

Plus I'm in Canada so 6 USD shipping (perhaps more? I'll take this as open to change)

98 USD if I calculated correctly.
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adnauseam



Joined: Mar 27, 2013
Posts: 142
Location: Manitoba, Canada

PostPosted: Thu Jan 16, 2014 3:11 pm    Post subject: Newb question.. Reply with quote  Mark this post and the followings unread

So after looking at the original schematics at http://electro-music.com/forum/topic-54623.html I saw that it's talking about +/-15V where as I understand Eurorack specs to be +/-12v.

Haven't yet found alternate circuit diagram and being a novice I don't yet understand what to do to adapt it for 12v

Easy to accomodate?
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ungleichklang



Joined: Dec 03, 2011
Posts: 82
Location: East-Belgium

PostPosted: Sun Jan 19, 2014 8:03 am    Post subject: Re: Newb question.. Reply with quote  Mark this post and the followings unread

adnauseam wrote:
So after looking at the original schematics at http://electro-music.com/forum/topic-54623.html I saw that it's talking about +/-15V where as I understand Eurorack specs to be +/-12v.

Haven't yet found alternate circuit diagram and being a novice I don't yet understand what to do to adapt it for 12v

Easy to accomodate?


As far as I know the fonitronik modules they will run just fine with +-12V as well as with +-15V
No adaption needed Very Happy

_________________
greetings from belgium, Sascha

My new blogspot: http://ungleichklang.blogspot.com
My Youtube-Channel: http://www.youtube.com/user/ungleichklang


Linux Musician
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alangave



Joined: Jan 06, 2008
Posts: 4
Location: France

PostPosted: Sun Jan 19, 2014 1:13 pm    Post subject: Reply with quote  Mark this post and the followings unread

Hi,

I'm for 1 circuit VCO PCBs + 1 frontpanel PCB + 1 euro frontpanel

Will be my 3rd TH module, Fonik's design!
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adnauseam



Joined: Mar 27, 2013
Posts: 142
Location: Manitoba, Canada

PostPosted: Mon Jan 20, 2014 6:56 pm    Post subject: Ooh I get it. Reply with quote  Mark this post and the followings unread

I misunderstood there as being a PCB and the option of a front panel - printed or unprinted.

I'll take:
1 VCO - complete set
1 LFO - complete set.

Ignore my previous post Smile
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Rivelen



Joined: Mar 02, 2007
Posts: 30
Location: France
Audio files: 3
G2 patch files: 12

PostPosted: Tue Jan 21, 2014 12:37 am    Post subject: Reply with quote  Mark this post and the followings unread

Hi,
1 x LFO PCB for me please !
Thanks.
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uriahheep



Joined: Feb 06, 2009
Posts: 1
Location: Jersey Channel Isles

PostPosted: Tue Jan 21, 2014 4:45 am    Post subject: 555 vco
Subject description: pcb
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Hello
Can you put me down for
6 x 555 VCO circuit PCBS
Thank you
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isacsen



Joined: Apr 30, 2009
Posts: 9
Location: ...getting closer to the modular!

PostPosted: Wed Jan 22, 2014 4:12 am    Post subject: Reply with quote  Mark this post and the followings unread

I'm interested in:

2 x circuit 555-VCO PCBs
2 x circuit Controller LFO PCBs

Trying to restart my modular building. This will be a nice project.

Thank you.
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piedwagtail



Joined: Apr 15, 2006
Posts: 160
Location: shoreditch
Audio files: 1

PostPosted: Thu Jan 23, 2014 9:31 am    Post subject: Reply with quote  Mark this post and the followings unread

4 x circuit Controller LFO PCBs

please.

Robert
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drapdap



Joined: Oct 11, 2004
Posts: 194
Location: bp
Audio files: 1

PostPosted: Thu Jan 23, 2014 12:30 pm    Post subject: Reply with quote  Mark this post and the followings unread

hello Fonik!


i'll take 8 pcb's of the 555-VCO's if that is possible, taht is 4 for me, 4 for
a friend, i build, he pays. Yes Matthias, he's more reliable than me. Very Happy

should i pm you?

robert
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flyweight303



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

PostPosted: Fri Jan 24, 2014 3:26 am    Post subject: Reply with quote  Mark this post and the followings unread

Hi Mathias

Good to see youre doing another run.

For me please:

1 vco PCB
1 controll pcb
1 panel

4x pcb LFO

(removed 4 vco pcb's)
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shiftr



Joined: Jan 24, 2014
Posts: 1
Location: Netherlands

PostPosted: Fri Jan 24, 2014 12:06 pm    Post subject: Reply with quote  Mark this post and the followings unread

2x circuit VCO PCB's
please

shipping to the Netherlands...
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Acilator



Joined: Jan 24, 2014
Posts: 1
Location: Eindhoven, NL

PostPosted: Fri Jan 24, 2014 1:32 pm    Post subject: 555VCO Reply with quote  Mark this post and the followings unread

For me,

2 X VCO complete (pcb's + panel)
2 X LFO Complete (pcb's + panel)


Also Shipping to the Netherlands
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ioannis taf



Joined: Sep 19, 2013
Posts: 5
Location: GREECE

PostPosted: Sat Jan 25, 2014 3:45 pm    Post subject: Reply with quote  Mark this post and the followings unread

Hello Matthias,
I would like,please:
2 x circuit VCO pcbs,
1 x frontpanel VCO pcb,
2 x circuit LFO pcbs,
1 x frontpanel LFO pcb.

(and if available, older pcbs)

Shipping to Greece.
Thank you,
Ioannis

Last edited by ioannis taf on Sun Jan 26, 2014 3:08 pm; edited 1 time in total
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mono-poly



Joined: Jul 07, 2004
Posts: 935
Location: Rotterdam, Netherlands
Audio files: 2

PostPosted: Sat Jan 25, 2014 6:12 pm    Post subject: Reply with quote  Mark this post and the followings unread

I'd like 3 vco pcbs and panels
And i'd like 2 lfo pcbs and panels
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jukingeo



Joined: Oct 24, 2007
Posts: 161
Location: The dark side of the moon

PostPosted: Sat Jan 25, 2014 9:58 pm    Post subject: Reply with quote  Mark this post and the followings unread

3 x VCO Circuit PCB

Shipping to 11702, USA.

Thanx,

Geo

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Lover...I won't take a back seat, tonight. Got some dancin' to do.
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avouts



Joined: Jan 26, 2014
Posts: 1
Location: Greee

PostPosted: Sun Jan 26, 2014 2:15 pm    Post subject: Reply with quote  Mark this post and the followings unread

4 cirquit vco pcb's
and 2 adsr pcb's ( if available )
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alfonso



Joined: Jul 27, 2011
Posts: 13
Location: ferrara - italy

PostPosted: Mon Jan 27, 2014 3:30 am    Post subject: Reply with quote  Mark this post and the followings unread

arghh! am i late? Embarassed Embarassed

i'd take 4 OSC PCBs and 4 OSC PANELS
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piedwagtail



Joined: Apr 15, 2006
Posts: 160
Location: shoreditch
Audio files: 1

PostPosted: Mon Jan 27, 2014 11:15 pm    Post subject: Reply with quote  Mark this post and the followings unread

Alfonso, if you are from Ferrara anything is possible Smile
He's put the deadline back due to Chinese New Year - factory is closed- the post was updated at Muffs for 7thFeb latest orders.

Robert
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alfonso



Joined: Jul 27, 2011
Posts: 13
Location: ferrara - italy

PostPosted: Tue Jan 28, 2014 3:07 am    Post subject: Reply with quote  Mark this post and the followings unread

piedwagtail wrote:
Alfonso, if you are from Ferrara anything is possible Smile


Very Happy yes i am Smile the beautiful magic city Very Happy
thanks for the info !
so i'm in for 4 vco pcb and 4 vco panels!
a.
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fonik



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

PostPosted: Tue Jan 28, 2014 4:56 am    Post subject: Reply with quote  Mark this post and the followings unread

scriptstyle wrote:
^agreed

I am down for
2X VCO
1X LFO

just the circuit PCBs i guess?

_________________
Posted Image, might have been reduced in size. Click Image to view fullscreen.
cheers,
matthias
____________
fonitronik at
FlickR (pix) / SoundCloud (sounds) / YouTube (vids) / Vimeo (vids) / facebook (news)
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