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2015 Build Pictures
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J3RK



Joined: Jun 05, 2006
Posts: 123
Location: Seattle

PostPosted: Tue Mar 31, 2015 1:52 pm    Post subject: Reply with quote  Mark this post and the followings unread

Here's a little Frac system I'm working on right now.

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umschmitt



Joined: Jun 29, 2011
Posts: 189
Location: brrlin
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PostPosted: Wed Apr 01, 2015 4:06 pm    Post subject: Reply with quote  Mark this post and the followings unread

Much too much too many beautiful things here!
I was really pissed off last saturday so i built this (a krach orkester… ähm noise ensemble). Guerrilla style.


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cbfishes



Joined: Mar 01, 2015
Posts: 24
Location: Alto, Michigan

PostPosted: Sun Apr 05, 2015 2:57 pm    Post subject: So much great stuff! Reply with quote  Mark this post and the followings unread

Wow, so much great stuff here. I'm so glad I stumbled upon electro-music in my quest to build stuff that makes noises!

I'm a total newbie to all this, but thanks to these forums and other internet sources I've managed to build a sort of modular. The stuff you all share has been invaluable for helping me make sense of those crazy schematics and stuff.

Some of the modules are totally passive (like the vactrol low pass gate), all are very simple (basic 40106, 555, and op amp-based oscillators). Next step is to build a dual supply so I can finally build a resonant low pass filter (in my mind, that's what I'm missing). Case and panels built with my very minimal woodworking skills and pallets; many components liberated from other items, thrift store toys, even parts of a TV I found in the woods. Patches made with alligator clips, screws, and nuts. Powered off a 5V wall wart. Most of the circuits come from various folks on these forums like synthmonger, Thomas Henry, et al.

Not pictured: I'm using a Raspberry Pi running wiringPi and Mido to listen for MIDI input and scale the 1-127 to 1-100 PWM on the GPIO pins (using a python script). Then I take that through a simple 1-pole low pass filter to get a fairly smooth voltage, which in turn modulates stuff, plays oscillators, etc.

Not the fanciest but it sure does make some noise!

Here's a video of some sounds from a few weeks ago (more modules since then): https://www.youtube.com/watch?v=AR4bPaf7Dwo

Here are some pics:


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Music/fishing/adventures blog CB Fishes



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PHOBoS



Joined: Jan 14, 2010
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PostPosted: Sun Apr 05, 2015 3:16 pm    Post subject: Reply with quote  Mark this post and the followings unread

I always like personalized DIY panels so I really like how that synth looks. And nice to see you're reusing some old stuff.
For a filter you could use the one from Eric Archer which works on a single supply, and sounds quite good. However the
pdf is no longer available, but I have it so just send me a pm if you're interested.
it's been moved and now here
Of course you do want a dual supply anyway. It will make some things easier, and give you more circuits to choose from Wink

I will watch the video later.

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Last edited by PHOBoS on Sun Apr 05, 2015 4:21 pm; edited 1 time in total
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cbfishes



Joined: Mar 01, 2015
Posts: 24
Location: Alto, Michigan

PostPosted: Sun Apr 05, 2015 3:57 pm    Post subject: Reply with quote  Mark this post and the followings unread

Whoa, awesome! Hadn't seen that one yet. To be honest that schematic is pretty intimidating to me– before I tackle something like that I guess I better get a bigger breadboard (mine is the size of an altoids tin). I'm sure it's simple to most folks on here, but I'm just getting started... Gotta work up to using more than 10 components in one circuit!

Probably off topic, but in that schematic what is the "0V"? I get "+9V" and "GND," but not sure "0V."

I've breadboarded various active filters with a LM324 and never have I even been able to get a sound. Probably wiring something wrong every time. Ima keep at it!

Glad you like the panels! Your stuff is very inspirational!

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PHOBoS



Joined: Jan 14, 2010
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PostPosted: Sun Apr 05, 2015 4:20 pm    Post subject: Reply with quote  Mark this post and the followings unread

Very Happy thanks

yeah I can understand it's a bit intimidating but a lot of filters will have a similar setup and once you're
able to see it as the individual blocks it's made of it's get's easier to understand. I'll send you a pm with
some more details.

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Just Dave



Joined: Mar 08, 2015
Posts: 6
Location: Ireland

PostPosted: Mon Apr 06, 2015 2:06 pm    Post subject: Reply with quote  Mark this post and the followings unread

umschmitt wrote:
Much too much too many beautiful things here!
I was really pissed off last saturday so i built this (a krach orkester… ähm noise ensemble). Guerrilla style.


That's really pretty. Do you have any sound samples?
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umschmitt



Joined: Jun 29, 2011
Posts: 189
Location: brrlin
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PostPosted: Wed Apr 08, 2015 6:51 am    Post subject: Reply with quote  Mark this post and the followings unread

Just Dave wrote:
That's really pretty. Do you have any sound samples?

Thanks!
As for soundclips, i'm afraid not yet (who knows, i might even get banned from this forum for posting clips of me… playing banjo through it). Soundwise it's more carpet bombing than guerrilla: at minimum delay setting you get a velcro style fuzz, with a bit more of it a nasty slapback, and then further a kind of chorusey thingie and at the end just absurd delayed squelches - all of it square-wavish and all-or-nothingy. Purty brutal.
Anyway should be able to find some info on the webz. Design (not mine) is by an Anchovie up there on DIYstompboxes.

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PHOBoS



Joined: Jan 14, 2010
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PostPosted: Wed Apr 08, 2015 8:27 am    Post subject: Reply with quote  Mark this post and the followings unread

umschmitt wrote:
who knows, i might even get banned from this forum for posting clips of me… playing banjo through it.

anybody who has problem with banjo has probably not listened to Dale Parson Cool
Posted Image, might have been reduced in size. Click Image to view fullscreen.
here is a nice example (hmm we should have one with a banjo)

OT: the most recent thing I put together is the NANDulator (special easter edition). more info here


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umschmitt



Joined: Jun 29, 2011
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PostPosted: Wed Apr 08, 2015 5:39 pm    Post subject: Reply with quote  Mark this post and the followings unread

Boah! This NANDulator thing is awesome! (i mean not just the enclosure…) Great sound possibilities despite the simple design. And i suspect further developments.
Anyway. i'm an instant fan and i think we have here the subject for our next DIY electronic workshop! (i guess it'd be ok?)
::::::::::::::
Back on topic, what can i say except: anybody who has listened to me could probably have all of a sudden a problem with banjo…

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PHOBoS



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PostPosted: Thu Apr 09, 2015 10:23 am    Post subject: Reply with quote  Mark this post and the followings unread

umschmitt wrote:
Anyway. i'm an instant fan and i think we have here the subject for our next DIY electronic workshop! (i guess it'd be ok?)

of course, feel free to use it in any way you want to, that's why I share the circuits.

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AlanP



Joined: Mar 11, 2014
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Location: New Zealand
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PostPosted: Fri Apr 10, 2015 2:42 pm    Post subject: Reply with quote  Mark this post and the followings unread

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.

Anyone else afflicted with a permanent internal voice saying, "This could be better..." ?

I decided to re-layout the EFM 3046VCO for SMD parts, and with a more Mutable inspired thing, where the only parts visible once done are trimmers and the power connector on the back. Fairly limited as VCO's go (the Square output is anemic, still haven't got around to figuring out why, and it doesn't go very high in frequency), but satisfying nonetheless Smile

I think I've hit my 40W pencil iron's limitations -- the tip was nearly too rounded for the LM3046 IC, and the 47uF caps barely got soldered at all.
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isak



Joined: Dec 13, 2009
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Location: Israel
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PostPosted: Sat Apr 11, 2015 1:58 am    Post subject: Reply with quote  Mark this post and the followings unread

AlanP wrote:
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.

Anyone else afflicted with a permanent internal voice saying, "This could be better..." ?

I decided to re-layout the EFM 3046VCO for SMD parts, and with a more Mutable inspired thing, where the only parts visible once done are trimmers and the power connector on the back. Fairly limited as VCO's go (the Square output is anemic, still haven't got around to figuring out why, and it doesn't go very high in frequency), but satisfying nonetheless Smile

I think I've hit my 40W pencil iron's limitations -- the tip was nearly too rounded for the LM3046 IC, and the 47uF caps barely got soldered at all.



Nice build my friend.
Maybe the next post will help you on the square sound:
http://electro-music.com/forum/topic-47625.html

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umschmitt



Joined: Jun 29, 2011
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PostPosted: Sat Apr 25, 2015 3:24 pm    Post subject: Reply with quote  Mark this post and the followings unread

NANDulator!


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AlanP



Joined: Mar 11, 2014
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PostPosted: Sun Apr 26, 2015 8:16 pm    Post subject: Reply with quote  Mark this post and the followings unread

Wasn't sure where to put this. Well, Dad and I spent four or five hours building it, so it's a build Wink

Anyway, big news -- new case time!

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Two sets of 2x126hp rails from Elby Designs, power stuff from RS and OSHpark, and formica-covered wood pinched from Dad's workshop (he got it from the skip of a kitchen design place.)

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.

Power arrangements. I seriously need to tidy up the AC wires there. The terminal blocks are so I can add another power board hanging off the same transformer later on (there is a set of drill holes for another PSU board at the top of the case. I also need to order some flying busboards.

So chuffed right now! It looks the money, too!
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elmegil



Joined: Mar 20, 2012
Posts: 2177
Location: Chicago
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PostPosted: Sun Apr 26, 2015 9:25 pm    Post subject: Reply with quote  Mark this post and the followings unread

Nice work Smile
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vladosh



Joined: Aug 02, 2010
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Location: macedonia
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PostPosted: Fri May 01, 2015 2:09 am    Post subject: Reply with quote  Mark this post and the followings unread

2 x Buchla 258 , Serge bottom section waveshaper , CV Twister ,all in 42HP eurorack


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loydb



Joined: Feb 04, 2010
Posts: 393
Location: Providence, RI

PostPosted: Sun May 03, 2015 7:27 am    Post subject: Reply with quote  Mark this post and the followings unread

My recently-built Zebrawood 168hp 15U case.

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Skrog Productions



Joined: Jan 07, 2009
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PostPosted: Sun May 03, 2015 8:15 am    Post subject: Reply with quote  Mark this post and the followings unread

very nice case Smile
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bubzy



Joined: Oct 27, 2010
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PostPosted: Sun May 03, 2015 12:58 pm    Post subject: Reply with quote  Mark this post and the followings unread

that wood looks awesome, very nice look altogether Smile good luck with filling that, will be a load of fun!
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AlanP



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PostPosted: Mon May 04, 2015 7:07 pm    Post subject: Reply with quote  Mark this post and the followings unread

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

Sorted!

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

This is what it looks like with the front panel off. Hugely fun, this oscillator -- the Timbre and Colour knobs do different things, depending on what waveform you have selected, plus it can decrease the bits, or the sampling rate (96kHz down to stupidly low) and all kinds of fun!

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

This is what it looked like in it's natural habitat. (Yes, I still have to bolt most of that in -- I've got a busboard on the way and am not hugely bothering until I have things finalized.) The FFB was from when I was playing with the "NOIS" setting.

Actually, at one point, I thought I heard ticking... and my heart SANK and went "oh, shiiiiit..."

...

luckily, I had just left a clock signal plugged into the 'TRIG' input, and it was doing what it was designed to. I think.
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comrade_zero



Joined: Mar 05, 2009
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Location: arizona
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PostPosted: Thu May 07, 2015 12:50 am    Post subject: Reply with quote  Mark this post and the followings unread

@vladosh-- that is a great looking panel!
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AlanP



Joined: Mar 11, 2014
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PostPosted: Tue May 12, 2015 11:12 pm    Post subject: Reply with quote  Mark this post and the followings unread

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.

Ian Fritz' Jerkster circuit -- a 3rd order autonomous chaos circuit. (No, I'm not completely sure what that means, either!) But it makes cool patterns and noises. The resistors on the pot backs are because I didn't have the right values on hand, so added them to reduce the pot resistance to what the circuit needs.

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.

YUSYNTH Clock Divider. Three separate dividers, each going from divide by 1 to divide by 8. If you just plug an input into #1, then #2 daisychains off it (and #3, in turn, daisychains off #2. There is no input for #3 -- it's the Reset jack.) Very nice lightshow, and I'm sure I'll get good use out of it Very Happy
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nicolas3141



Joined: May 25, 2007
Posts: 185
Location: Christchurch, New Zealand

PostPosted: Sat May 16, 2015 4:11 am    Post subject: Reply with quote  Mark this post and the followings unread

Touch sensitive sound generator with 9 contact plates.


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RingMad



Joined: Jan 15, 2011
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Location: Montreal, Canada
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PostPosted: Sat May 16, 2015 4:22 am    Post subject: Reply with quote  Mark this post and the followings unread

nicolas3141 wrote:
Touch sensitive sound generator with 9 contact plates.

Looks lovely and intriguing!

.:James:.
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