[PCB offer] Thomas Henry's Contr.LFO. 2nd run, check PMs

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fonik
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[PCB offer] Thomas Henry's Contr.LFO. 2nd run, check PMs

Post by fonik » Fri Aug 10, 2012 2:56 pm

LFO with lots of functions:
Thomas Henry TCL555 based LFO Controller (e-m.com)
________________

2nd run:

i am taking orders until 14 JUN 2013.
just contact me via this thread or PM or email, telling me how many PCBs of each (circuit=CB, frontpanel=FP) you would want. be honest about your interest, please.
for the front panel i need a minimum interest of 30pcs.
i won't take any money before i hold the PCBs in my hand. as soon as the PCBs arrived from manufacturer i will contact all who indicated interest concerning payment. paypal preferred.

now to the numbers.
each PCB (circuit or frontpanel) = 10.-USD/7.50 EUR
printed front panel = 13.-USD/10.-EUR
shipping outside europe:
1 PCB = 3.-USD, 2+ PCBs = 6.-USD
shipping europe:
1 PCB = 2.-EUR, 2+ PCBs = 4.-EUR
shipping deutschland:
1 PCB = 1.-EUR, 2+ PCBs = 2.-EUR

since i need a minimum of 30pcs for the front panels be clear about your interest (i.e. what do you need/want if the minimum of 30pcs for the front panel is NOT reached?).
thanks for your understanding
_____________________

what does it do? refer to thomas description in the link above, here is a quote:
In triggered mode, as long as keyboard triggers are appearing, the LFO is quiescent. When the triggers eventually stop, the output signal smoothly ramps up to full amplitude but only after a desired interval. This creates the so-called delayed vibrato effect when used to frequency modulate a VCO (voltage controlled oscillator).
In gated mode the LFO is quiescent as long as no keyboard gates are present. But when a gate is finally detected, again the output ramps up.
Footswitch mode is similar, but now it is an ordinary short-to-ground footswitch which enables or disables the LFO.
Finally, with neither a keyboard trigger nor gate present, the unit behaves as a standard freerunning LFO.
All in all, with these basic modes, in addition to a variety of panel knobs, switches and jacks there is hardly a synthesizer control task that can’t be accommodated. Experimentation will probably uncover other valuable uses.
I have the permission from Thomas to do a PCB run for this project. i will offer the actual Controller LFO Circuit PCB, providing MTA-100 headers for easy wiring-up any format.
Additionally i will offer a frontpanel component PCB, which can be mounted piggyback to the circuit PCB. It provides footprints for 9mm vertical mounted potentiometers and vertical mounted sockets (available from earthenvar, however, there are kobiconn fitting the same footprint!?).

i will not provide any building documentations, just refer to the original documentation available from the link above. thomas documentations are very comprehensible, and the PCB lables follow thomas schematics.
_______________

BUILDING NOTES:

the chart below shows how to wire the potentiometers and the jacks, if you don't use the front panel components PCB:
Image

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)
_______________

here are some pictures of the prototype i built:
Image

Image

Image

Image

Image

and a very short demo of the Controller LFO, showing the gated and the trigger/delay functionality.
NOTE: on the frontpanel i mixed up the labels of the mode switch: Trigger should read Gate, and Gate should read Trigger.

[video][/video]
https://vimeo.com/52038397

Frontpanel Measures (if you decided to use the additional front panel components PCB), a FPD file is also available:
Image
i tend to use oversized drills to make the marriage of front panel and components PCB more comfortable.

here is a 16HP sketch that would fit the upcoming eurorack panel (if there is enough interest) for the LFO (and the one for the 555-VCO and ADSR is still to be made):

Image

and here is the silkscreen of the circuit PCB:
Image

original post:
BTW I have the permission from Thomas to do a PCB run for this project. It is the same as the VCO: i made a proto PCB months ago, when i had the privilege to a test build for new projects. it is tested and working very well (see pic in link above). however, the PCBs aimed for something else, so i might do some design alignments to allow piggyback mounting with a frontpanel components PCB in eurorack format, which became very popular lately...
[/img]
Last edited by fonik on Mon Aug 12, 2013 2:49 pm, edited 14 times in total.
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FingerTappin
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Post by FingerTappin » Fri Aug 10, 2012 3:37 pm

Very nice, and cool panel design/color!

Probably interested in a pcb, will you offer a panel also?

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Post by Luka » Fri Aug 10, 2012 7:43 pm

looks good

sad to see all the diy projects aimed at eurorack these days :/

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Post by andrewF » Fri Aug 10, 2012 7:56 pm

Luka wrote:
sad to see all the diy projects aimed at eurorack these days :/
:hihi:
my boards have to be inserted sideways into eurorack

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Post by Luka » Fri Aug 10, 2012 8:00 pm

back in my day we used to wire panel components :youkids:

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Post by SMS303 » Fri Aug 10, 2012 8:42 pm

4 for me plz :tu:
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Post by keninverse » Fri Aug 10, 2012 8:56 pm

That PCB layout is awesome Matthias. Totally love the way you route your boards.

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Post by diablojoy » Fri Aug 10, 2012 11:44 pm

Count me in matthias i need more LFO's
at least a couple anyways.
It probably wont happen today but if it does it definitely wont go smoothly.

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Post by regenbot » Fri Aug 10, 2012 11:59 pm

I'll take two :tu:

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Post by Blinkar blå » Sat Aug 11, 2012 3:26 am

2 plz!
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Post by Dego » Sat Aug 11, 2012 3:34 am

2 plz

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Post by delayed » Sat Aug 11, 2012 3:38 am

got pricing one these yet?

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fonik
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Post by fonik » Sat Aug 11, 2012 5:33 am

Luka wrote:looks good

sad to see all the diy projects aimed at eurorack these days :/
it is not!
my PCB layout is meant for wiring all panel components, take a look at my build... you could build this project in any format, in fact thomas designs his circuits for 15V anyways.
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Post by fonik » Sat Aug 11, 2012 5:34 am

no pricing yet.
the question is of i should/could do a 2nd PCB for panel components, which would require more time and efforts...
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Post by nickster » Sat Aug 11, 2012 6:01 am

fonik wrote:no pricing yet.
the question is of i should/could do a 2nd PCB for panel components, which would require more time and efforts...
Yes most definitely Matthias, pretty please. :hihi:

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Post by fonik » Sat Aug 11, 2012 6:31 am

a little bit off topic, nevertheless, wiring the front panel components is the better choice IMHO. it is more reliable. you can easily replace failing parts, no stress to the PCB...
PCB mounted components are the choice for commercial products, just because of the price.

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Post by arrmcbain » Sat Aug 11, 2012 6:46 am

I understand the appeal of board-mounted hardware, but in this case I would wire the parts to keep the design similar to the rest of my DIY modules.

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Post by Memory_Leak » Sat Aug 11, 2012 7:04 am

cant wait two please :tu:
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Post by xerxl » Sat Aug 11, 2012 7:14 am

I'd love to try one of these.
That panel doesn't look too crowded, so I don't think its worthwhile doing a component pcb.

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Post by Rod Serling Fan Club » Sat Aug 11, 2012 8:41 am

Luka wrote:
sad to see all the diy projects aimed at eurorack these days :/
If it will fit in euro it will fit behind anything else.

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Post by bensaddiction » Sat Aug 11, 2012 9:08 am

Depth might be a tad of an issue for some in euro. A bit squarer would be fantastic.

I'm interested if somebody is going to do a euro panel run (clarke?)

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Post by amsonx » Sat Aug 11, 2012 9:49 am

one for me please :)
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Post by elmegil » Sat Aug 11, 2012 10:18 am

As stated elsewhere, definitely one for me :-)

I think I can fit this behind a 1U wide dotcom panel... (not parallel mounted of course) going to give it a shot anyway. My space is constrained, so that would be a big boon for an LFO for my system.

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Post by SMS303 » Sat Aug 11, 2012 10:38 am

elmegil wrote:I think I can fit this behind a 1U wide dotcom panel... (not parallel mounted of course) going to give it a shot anyway. My space is constrained, so that would be a big boon for an LFO for my system.
same here... 2 in euro and 2 in dotcom format. first i was thinking for cgs58 dual lfo's. but those haven't a gate input. so the TH lfo's would be a perfect solution 8_)

i still don't get/understand why most lfo's are without a gate input?
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Post by roglok » Sat Aug 11, 2012 2:48 pm

just what i've been looking for! one for me please. :tu:

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