The 2019 Show Us Your DIY Builds Thread

From circuitbending to homebrew stompboxes & synths, keep the DIY spirit alive!

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soup
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Post by soup » Sat May 11, 2019 3:48 pm

Trying out some new panel material, laser cut mdf, the beginnings of a cgs sequencer maybe, pulse divider and quad logic gate in banana frac...

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gnsk
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Post by gnsk » Tue May 14, 2019 9:41 am

sample and hold and lfo and lfo and noise

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djthopa
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Post by djthopa » Tue May 14, 2019 11:54 am

gnsk wrote:sample and hold and lfo and lfo and noise

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Wow!

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tobb
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Post by tobb » Tue May 14, 2019 6:33 pm

Kampfzwerg wrote:Thanks for your comment djs!

Not sure yet, I have to get it to work properly first.

Another thing is the 50k center tabbed potentiometers.
I didn't find a supplier that does them in the quality I need them.
So I have to make them myself, which is pretty fiddely.

For me this is more of a "the journey is the destination" thing.
I want to know if I can even do it. And I got a family too...

Martin
You can get them in small quantity's from Omeg UK,also the pot with switch for the filter mode

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SlightlyNasty
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Post by SlightlyNasty » Wed May 15, 2019 8:37 pm

That point-to-point is fab, gnsk.

soup - is that melamine coated MDF you're using or just painted? Looks great!
www.slightlynasty.com - 4U DIY Modules for the Loudest Warning format

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Kampfzwerg
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Post by Kampfzwerg » Thu May 16, 2019 3:23 am

tobb wrote:
Kampfzwerg wrote:Thanks for your comment djs!

Not sure yet, I have to get it to work properly first.

Another thing is the 50k center tabbed potentiometers.
I didn't find a supplier that does them in the quality I need them.
So I have to make them myself, which is pretty fiddely.

For me this is more of a "the journey is the destination" thing.
I want to know if I can even do it. And I got a family too...

Martin
You can get them in small quantity's from Omeg UK,also the pot with switch for the filter mode

Hi tobb

Thank you for your comment!

I'll contact Omegs sales about that, since I couldn't see anyting about it on their Website.

And as for the BP switch: I'll probably just go for the reissue SEM design and put in a slide switch.

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Kampfzwerg
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Post by Kampfzwerg » Thu May 16, 2019 10:43 am

I just got a friendly Mail from Omegs saying that they stopped making these
center tapped Pots back in the 1990s.
I think they would start producing them if I'd buy 120'000 of them :hihi:

Anyway, it was worth a try. Thanks again.

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soup
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Post by soup » Thu May 16, 2019 12:55 pm

SlightlyNasty wrote:soup - is that melamine coated MDF you're using or just painted? Looks great!
Thanks. It's coated mdf, not melamine but something similar. It's a nice change from the acrylic I had been using a lot.

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Kampfzwerg
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Post by Kampfzwerg » Thu May 16, 2019 2:18 pm

Hey soup: I really like how you layed out that pannel!
WOMEN AND CATS WILL DO AS THEY PLEASE,
AND MEN AND DOGS SHOULD RELAX AND GET USED TO THE IDEA.

jochem
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Post by jochem » Mon May 20, 2019 11:41 pm

I've recently built two modules, designed by David Haillant. Both are adaptations of Music from outer space: the Weird sound generator and the Sound lab mini system.

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cackland
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Post by cackland » Tue May 21, 2019 2:31 pm

Where did you get the pcbs manufactured?

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Kampfzwerg
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Post by Kampfzwerg » Tue May 21, 2019 11:59 pm

cackland:

Are you asking just jochem or the general public?
WOMEN AND CATS WILL DO AS THEY PLEASE,
AND MEN AND DOGS SHOULD RELAX AND GET USED TO THE IDEA.

jochem
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Post by jochem » Wed May 22, 2019 12:27 pm

cackland wrote:Where did you get the pcbs manufactured?
I bought them from David Haillant: www.davidhaillant.com. If i remember correctly, they will be sold through synthcube.

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Reese P. Dubin
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Post by Reese P. Dubin » Wed May 22, 2019 1:20 pm

gnsk wrote:sample and hold and lfo and lfo and noise

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o hell yes look at that mess!
love this

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Reese P. Dubin
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Post by Reese P. Dubin » Thu May 23, 2019 1:07 pm

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pic upload wont allow rotation today so...

I tore down and rebuilt stuff from the last 12 years into a lil system for a friend. The top section in '4U' the bottom essentially Frac. Pretty fun
Orgone Accumulator
TH XR VCO
TH LM VCO
mix
Serge middle wave mult
VCQF
SSG
VCS
Appendage ribbon controller. Did only like 10 of us make these???
Barton Dual Nice Quantizer
4 LFOs from Marjan's MS20 revision
VCA VC mix bank
5V source/simple comparator/ext input
2 outputs with volume

sadly too tired to give it the full workout it deserves before it leaves for its new home.

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charonme
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Post by charonme » Mon May 27, 2019 3:11 am

spotify, bandcamp
Heptaphasis - DIY 3HP 7-phase quadrature sine LFO

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fitzgreyve
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Post by fitzgreyve » Tue May 28, 2019 8:32 am

Original Digisound 80-17 Reverb PCB repackaged for Eurorack.

The add-on PCB is a duplicate output filter for stereo out, plus CV control of Delay (I basically just put a vactrol across the clock frequency control resistor). Switches add "echo" mode and choice of feedback stage.

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The original digisound PCB was "interesting" to assemble (nearly 35 years ago!) - top ground plane without any solder mask.
Under developement:
- "Muse"
---------------------------------------
https://fitzgreyve2.blogspot.com/

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dKRelease
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Post by dKRelease » Tue May 28, 2019 2:39 pm


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forestcaver
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Post by forestcaver » Sat Jun 01, 2019 5:29 am

4hp, triple S+H, independent noise generation, aluminium panel, with trig normalled (0603 parts on the back to make it easier to diy and based on kinks S+H section)

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StillNotWorking
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Post by StillNotWorking » Sat Jun 01, 2019 12:22 pm

wrong thread - sorry :zombie:
Last edited by StillNotWorking on Tue Jun 04, 2019 4:54 pm, edited 1 time in total.

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Pav
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Post by Pav » Mon Jun 03, 2019 10:37 am

Oakley 5U builds:

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rgds Pav

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Pav
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Post by Pav » Mon Jun 03, 2019 10:49 am

Utilities Panel consisting of YuSynth Clock Divider, MFOS Quantizer, passive mult, in an "AllMetalParts" case with Oakley PSU.

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For any of you who have built the mfos quantizer look closely at this pcb

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I believe this was a prototype that was sent out by supplier by mistake. They sent a regular pcb after to the friend who passed this on to me. Not only are the SS4,5,6 holes missing on the right, plus holes for two capacitors were missing too. But i puzzled it out and luckily got it to work :bananaguitar:
rgds Pav

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Pav
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Post by Pav » Mon Jun 03, 2019 10:56 am

For the Eurorack afficianados...

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I used the MN3007 BBD ..onboard lfo is a bonus. Still need to find some decent knobs that fit.
rgds Pav

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StillNotWorking
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Post by StillNotWorking » Wed Jun 05, 2019 6:25 am

DAC+ DSP. Hope this setup will make it easy to get into RPi synthesis and hi-fi.
DSP function seems intriguing.
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sduck
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Post by sduck » Wed Jun 05, 2019 12:35 pm

I've got a similar RPi/hifiberry setup for streaming stuff from my computer to my stereo. Using Volumio. It works fairly well. Fiddly, but works.

BTW, this thread is normally used for showing off modular synth related DIY builds - the kind of stuff you've been posting here might be better suited for the New Booty thread - viewtopic.php?t=4323

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