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 Forum index » DIY Hardware and Software
2011 Build Pictures
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Skrog Productions



Joined: Jan 07, 2009
Posts: 778
Location: Scottish Borders
Audio files: 87

PostPosted: Wed Jul 20, 2011 11:19 am    Post subject: Reply with quote  Mark this post and the followings unread

i like the clear panel , great stuff.
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Spacehardware



Joined: Jan 21, 2010
Posts: 7
Location: Bristol,UK

PostPosted: Wed Jul 20, 2011 11:52 am    Post subject: Reply with quote  Mark this post and the followings unread

Thanks rosch,
I'm intending to build and sell this as a ready made synth in small volumes (to supplement the meagre income from my day job ), so no plans to make the code available.

But happy to answer any questions, and grateful for the feedback received.
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ericcoleridge



Joined: Jan 16, 2007
Posts: 885
Location: NYC

PostPosted: Thu Jul 21, 2011 11:21 am    Post subject: Reply with quote  Mark this post and the followings unread

Wow, this looks and sounds beautiful. Great work.

Spacehardware wrote:
Another year, another synth...
Just completed a wavetable synth module.

And uploaded a couple of videos:







Enjoyed Synth DIY UK last weekend BTW Smile
(Crawls back into the woodwork for another year).
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darkomen



Joined: Jun 21, 2010
Posts: 40
Location: USA

PostPosted: Sat Jul 30, 2011 8:34 am    Post subject: Reply with quote  Mark this post and the followings unread

Finished a MFOS Soundlab Minisynth!
Everything seems to be in working order except for the AR generator, which doesn't seem to act quite right.


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Skrog Productions



Joined: Jan 07, 2009
Posts: 778
Location: Scottish Borders
Audio files: 87

PostPosted: Sat Jul 30, 2011 8:45 am    Post subject: Reply with quote  Mark this post and the followings unread

darkomen wrote:
Finished a MFOS Soundlab Minisynth!
Everything seems to be in working order except for the AR generator, which doesn't seem to act quite right.




You'll have hours of fun with this Smile http://www.electro-music.com/forum/topic-39555.html , and i heartily reccomend blue colours on diy synths & gold , heh Smile

Great work , hope you iron out the A/R fault , usually something simple.

Dave.

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MirlitronOne



Joined: Nov 07, 2009
Posts: 77
Location: Surrey, UK
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PostPosted: Sun Jul 31, 2011 9:14 am    Post subject: Reply with quote  Mark this post and the followings unread

Okay, high time I unveiled the project that has been keeping me occupied for the last 18 months - behold The Mightier Mirlitzer (I prematurely named my Sound Lab 'The Mighty Mirlitzer' and now have to go one better):


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MirlitronOne



Joined: Nov 07, 2009
Posts: 77
Location: Surrey, UK
Audio files: 2

PostPosted: Sun Jul 31, 2011 9:36 am    Post subject: Reply with quote  Mark this post and the followings unread

The design criteria for 'The Mightier Mirlitzer' are as follows:

1. Keep it simple. Some of the modules are primitive but effective.

2. Each cabinet is approximately two feet wide and accommodates 8.75" (5U) panels. Standard panel widths are in multiples of inches (2" is the norm).

3. Each cabinet contains its own individual power supply giving +/- 12V at 1A (12V transformers are easier to find surplus than 15V ones). A power supply failure will only take out one cabinet, and each supply is sufficiently overrated to power a second cabinet in an emergency. In a REAL emergency, two 12V gel cells will do the job.

4. Each cabinet can play autonomously, containing at least one 'player' module (sequencer, pattern generator, S&H etc.) and at least one oscillator. Thus, individual cabinets can be extracted for demonstration or live use.

5. The MM is DIY down to the component level. Each module is built on stripboard or homebrew PCB. You can see that the front panels are colour-coded and no expense has been spent.

6. I have a 2' 6" wide gap between desks in my tiny home studio, in which fits a cheap veneered TV table. The MM is being erected vertically upwards from there. I figure I have room for six or maybe seven cabinets at a pinch. Two-and-a-half are filled (see photos); one will be a big sequencer and another one will be a Lunetta, offering both sound and timing signals for the rest of the monster, as well as operating stand-alone.

7. Eventually, the MM will meet the definition of a 'monster synthesizer', namely, if it falls on me, it will cause death or at least serious injury. Twisted Evil


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PHOBoS



Joined: Jan 14, 2010
Posts: 1804
Location: Moon Base
Audio files: 351

PostPosted: Sun Jul 31, 2011 10:39 am    Post subject: Reply with quote  Mark this post and the followings unread

MirlitronOne wrote:
...behold The Mightier Mirlitzer...

Love it! Very Happy

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MirlitronOne



Joined: Nov 07, 2009
Posts: 77
Location: Surrey, UK
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PostPosted: Sun Jul 31, 2011 12:14 pm    Post subject: Reply with quote  Mark this post and the followings unread

Thanks!

I forgot to mention that I used quarter-inch jacks because they're cheap, robust, reliable, compatible with everything else in the studio, and you can buy ready-made patch cords cheaply in a variety of lengths and colours. After all, who would want a black synthesizer? Wink

On the other hand, the Lunetta will use phono connectors. They're cheap, robust, small and can be connected with a bare wire and a matchstick in an emergency...

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diablojoy



Joined: Sep 07, 2008
Posts: 795
Location: melbourne australia
Audio files: 11

PostPosted: Sun Jul 31, 2011 2:50 pm    Post subject: Reply with quote  Mark this post and the followings unread

that sure is puurty!

Quote:
On the other hand, the Lunetta will use phono connectors. They're cheap, robust, small and can be connected with a bare wire and a matchstick in an emergency...


yes , wish i had thought of using those first up.
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bod



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

PostPosted: Sun Jul 31, 2011 3:13 pm    Post subject: Reply with quote  Mark this post and the followings unread

not technically finished as such, but i'm proud of my efforts so far and just got the prototype pcb's back from the fab house.

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

and populated it today.

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

its an analogue dub siren i built for a few friends, based around the amdek PCK-100 and the DS7. resettable LFO, Tri/Sqr wave VCO, decay envelope generator and VCA. i used the other half of the lm13700 to use as a voltage control for the VCO instead of it going to waste. the strip board version worked a treat so i'm keen to finish this to see how it holds up!
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inlifeindeath



Joined: Apr 02, 2010
Posts: 315
Location: Albuquerque, NM

PostPosted: Sun Jul 31, 2011 4:19 pm    Post subject: Reply with quote  Mark this post and the followings unread

Finished Scott Bernardi's VC Delay circuit. So much fun so far!

http://www.youtube.com/watch?v=W17-Z0nMmx4


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PHOBoS



Joined: Jan 14, 2010
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Location: Moon Base
Audio files: 351

PostPosted: Mon Aug 01, 2011 6:43 am    Post subject: Reply with quote  Mark this post and the followings unread

MirlitronOne wrote:
After all, who would want a black synthesizer? Wink

that's exactly what I love about it,. the colors. Not that I don't like black,
but there's something about the combination of the colors, incl the knobs,
that I really like. It's like it brings back some sort of memory but I don't
know what memory. Smile

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umschmitt



Joined: Jun 29, 2011
Posts: 159
Location: brrlin
Audio files: 11

PostPosted: Mon Aug 01, 2011 7:03 am    Post subject: Reply with quote  Mark this post and the followings unread

bod wrote:
its an analogue dub siren i built for a few friends, based around the amdek PCK-100 and the DS7. resettable LFO, Tri/Sqr wave VCO, decay envelope generator and VCA. i used the other half of the lm13700 to use as a voltage control for the VCO instead of it going to waste. the strip board version worked a treat so i'm keen to finish this to see how it holds up!

That looks splendid ! I'm at the moment trying to expand my ol'DS7 (adding sq. wave, filter w/ CV/LFO/EG, additional EG, routable audio modulation, tri/sq. LFO ao) but I'm definitely in another league :
Posted Image, might have been reduced in size. Click Image to view fullscreen.
(but it works !)

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XCenter



Joined: Oct 01, 2005
Posts: 108
Location: Germany

PostPosted: Mon Aug 01, 2011 7:41 am    Post subject: Reply with quote  Mark this post and the followings unread

inlifeindeath wrote:
Finished Scott Bernardi's VC Delay circuit. So much fun so far!


Coooool artwork. How do you label the panel?

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inlifeindeath



Joined: Apr 02, 2010
Posts: 315
Location: Albuquerque, NM

PostPosted: Mon Aug 01, 2011 8:41 am    Post subject: Reply with quote  Mark this post and the followings unread

XCenter wrote:
inlifeindeath wrote:
Finished Scott Bernardi's VC Delay circuit. So much fun so far!


Coooool artwork. How do you label the panel?


Thanks! That's my dog Boris in the picture. I actually used the same toner transfer method that I use to etch circuit boards and panels. I just printed out the reverse image from a laser printer on to a piece of magazine paper. Then ironed it on the piece of sanded smooth aluminum. Threw on a couple layers of clear coat and it turned out pretty well. Not as deep of black as I wanted but I like it.

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bod



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

PostPosted: Mon Aug 01, 2011 11:47 am    Post subject: Reply with quote  Mark this post and the followings unread

umschmitt wrote:
bod wrote:
its an analogue dub siren i built for a few friends, based around the amdek PCK-100 and the DS7. resettable LFO, Tri/Sqr wave VCO, decay envelope generator and VCA. i used the other half of the lm13700 to use as a voltage control for the VCO instead of it going to waste. the strip board version worked a treat so i'm keen to finish this to see how it holds up!

That looks splendid ! I'm at the moment trying to expand my ol'DS7 (adding sq. wave, filter w/ CV/LFO/EG, additional EG, routable audio modulation, tri/sq. LFO ao) but I'm definitely in another league :
(but it works !)


thank you!! but we all start somewhere! i'm just a bit of a nerd who likes to design stuff, and your mods are easily accomplishable with the DS7. i just looked at your thread and reckon my changes would work pretty well for what you need for the envelope trigger section. i'll finish this prototype board and if it all works how the strip board did then i'll post the schematic for any one who wants it. everything i've learnt has been from here, and all the other synth freaks who are decent enough to share their work so i'm more than happy to do the same!
the gate to trigger circuit works nicely but the lfo reset might get a few questionable looks from folk... however it does what i want! Very Happy with a few component changes and jumpers it'll make a nice drum module as well.

should hopefully be done by the end of the week if i get time away from decorating the house and all the other things life throws in the way! Laughing
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Skrog Productions



Joined: Jan 07, 2009
Posts: 778
Location: Scottish Borders
Audio files: 87

PostPosted: Mon Aug 01, 2011 12:25 pm    Post subject: Reply with quote  Mark this post and the followings unread

Fritz D-well chaos & 5Pulser & multiples module.


Hello , here are some sounds from these great circuits from Ian Fritz, i use the 5Pulser alot in my recent music & the chaos sometimes for unusual lfo type modulations.

Dave.


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Skrog Productions



Joined: Jan 07, 2009
Posts: 778
Location: Scottish Borders
Audio files: 87

PostPosted: Mon Aug 01, 2011 12:31 pm    Post subject: Reply with quote  Mark this post and the followings unread

MirlitronOne wrote:
Okay, high time I unveiled the project that has been keeping me occupied for the last 18 months - behold The Mightier Mirlitzer (I prematurely named my Sound Lab 'The Mighty Mirlitzer' and now have to go one better):



Impressive synth you have there , good work & nice and colorful .
Do you use lots of multiples or did you build mini mixers into the designs ??

Dave.

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bod



Joined: Apr 28, 2009
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PostPosted: Mon Aug 01, 2011 1:23 pm    Post subject: Reply with quote  Mark this post and the followings unread

skrog: that 5pulser sequener and lfo sampler is amazing! Shocked Very Happy
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umschmitt



Joined: Jun 29, 2011
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PostPosted: Mon Aug 01, 2011 2:45 pm    Post subject: Reply with quote  Mark this post and the followings unread

bod wrote:
i'll finish this prototype board and if it all works how the strip board did then i'll post the schematic for any one who wants it. everything i've learnt has been from here, and all the other synth freaks who are decent enough to share their work so i'm more than happy to do the same!
the gate to trigger circuit works nicely but the lfo reset might get a few questionable looks from folk... however it does what i want! Very Happy with a few component changes and jumpers it'll make a nice drum module as well.


Well THAT IS COOL.

Quote:
should hopefully be done by the end of the week if i get time away from decorating the house and all the other things life throws in the way! Laughing

I know what you mean. Today was mezzanine task force !

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sneakthief



Joined: Jul 24, 2006
Posts: 529
Location: Berlin

PostPosted: Thu Aug 04, 2011 12:57 pm    Post subject: Reply with quote  Mark this post and the followings unread

Finished my TR-808 clone after planning it on and off over the last 5 years. Took me a while to figure out what I wanted to do for the case.

First test, only one take:


http://soundcloud.com/sneakthief/first-mb-808-test


...all you hear is 808. The tones are from self-oscillating congas.



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mods:

- white noise level
- snare decay
- snare filter
- clap offset
- clap reverb amount
- maraca filter
- rimshot filter
- cowbell tuning x2
- open hat filter
- closed hat filter
- white & pink noise input jacks (not used in this demo)
- schmitt trigger input jacks (not used in this demo)
- self-oscillation of congas when the decay is set all the way

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emdot_ambient



Joined: Nov 22, 2009
Posts: 669
Location: Frederick, MD

PostPosted: Thu Aug 04, 2011 1:39 pm    Post subject: Reply with quote  Mark this post and the followings unread

sneakthief wrote:
Finished my TR-808 clone...

YOU WHAT?!
wow!
That's simply amazing looking...sounds pretty f--ing good, too!

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sneakthief



Joined: Jul 24, 2006
Posts: 529
Location: Berlin

PostPosted: Thu Aug 04, 2011 1:55 pm    Post subject: Reply with quote  Mark this post and the followings unread

In 2007 a guy made a few dozen pcb's that married the original 808 sounds with a wicked MIDIbox sequencer: http://ucapps.de/midibox_808.html

...and http://eight-oh-eight.org/

People have been waiting for Batch 3 for a couple years now. It'll probably happen, but no guarantees!

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frequencycentral



Joined: May 25, 2008
Posts: 186
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PostPosted: Mon Aug 08, 2011 5:42 am    Post subject: Reply with quote  Mark this post and the followings unread

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