The 2020 Show Us Your DIY Builds Thread!

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

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elmegil
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Re: The 2020 Show Us Your DIY Builds Thread!

Post by elmegil » Thu Mar 19, 2020 1:52 pm

No worries about module depth there! :-D

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cartertools
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Re: The 2020 Show Us Your DIY Builds Thread!

Post by cartertools » Thu Mar 19, 2020 2:33 pm

Yeah I do a lot of stripboard stuff and adapt MFOS, etc so the extra depth is handy. Plus it's stable and less likely to move, a less deep case gets stacked on top of it, and so on...
elmegil wrote:
Thu Mar 19, 2020 1:52 pm
No worries about module depth there! :-D

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Peake
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Re: The 2020 Show Us Your DIY Builds Thread!

Post by Peake » Thu Mar 19, 2020 6:05 pm

Roman 258 V3.0 with original transistor types, added linear/exponential FM switching, carbon film and carbon composition resistors in the waveshaper. Multi-turn trimpots for V/Octave, Linearity, and Heater.
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This is not the place I'd imagined it to be.

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forestcaver
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Re: The 2020 Show Us Your DIY Builds Thread!

Post by forestcaver » Fri Mar 20, 2020 10:40 am

Been busy building a small analog voice this year:
017-modular_3dcase.jpg
3d-printed case (46hp) with £7 dc power supply and bus board (meanwell dc-dc switcher - runs from 9-18v dc wall wart)

3340 vco (on-off-on switches on fm and sync)
3320 lpf (attenuverter on fm)
3320 hpf (attenuverter on fm)
lpg
3310 dual ASR
2164 Dual VCA (can chain an indefinite number together to create a huge vc-mixer/multi-channel vca) via jumpers on the back.
Headphone amp (1 ohm output impedance - can drive low impedance cans eg 32 ohm but has enough current to drive 600 ohm cans easily)

All with reverse polarity protection.

Ideas inspired from loads and loads of places !!!! (Acknowledgements in the schematics)

I plan on uploading the files to my github when I have cleaned them up.
003-modular_ajh_vco.jpg
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Last edited by forestcaver on Fri Mar 20, 2020 12:58 pm, edited 5 times in total.

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forestcaver
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Re: The 2020 Show Us Your DIY Builds Thread!

Post by forestcaver » Fri Mar 20, 2020 10:40 am

011-modular_ajh_asr.jpg
012-modular_ajh_asr.jpg
013-modular_ajh_vca1.jpg
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015-modular_ajh_phones.jpg
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Navs
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Re: The 2020 Show Us Your DIY Builds Thread!

Post by Navs » Wed Mar 25, 2020 3:42 pm

Little passive DIN Sync adapter/mult box. Write-up here:

https://navsmodularlab.blogspot.com/202 ... c-box.html
03_dinsync-box.jpg
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Jarno
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Re: The 2020 Show Us Your DIY Builds Thread!

Post by Jarno » Sat Mar 28, 2020 1:43 pm

forestcaver wrote:
Fri Mar 20, 2020 10:40 am
011-modular_ajh_asr.jpg012-modular_ajh_asr.jpg013-modular_ajh_vca1.jpg014-modular_ajh_vca1.jpg015-modular_ajh_phones.jpg016-modular_ajh_phones.jpg
I've been ogling those Kassutronics ASR envelope generators, what do you think of them?

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forestcaver
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Re: The 2020 Show Us Your DIY Builds Thread!

Post by forestcaver » Sat Mar 28, 2020 1:56 pm

Jarno wrote:
Sat Mar 28, 2020 1:43 pm
forestcaver wrote:
Fri Mar 20, 2020 10:40 am
011-modular_ajh_asr.jpg012-modular_ajh_asr.jpg013-modular_ajh_vca1.jpg014-modular_ajh_vca1.jpg015-modular_ajh_phones.jpg016-modular_ajh_phones.jpg
I've been ogling those Kassutronics ASR envelope generators, what do you think of them?
No idea I’m afraid - I havent seen them!

Jarno
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Re: The 2020 Show Us Your DIY Builds Thread!

Post by Jarno » Sat Mar 28, 2020 3:24 pm

Oh, I figured that's what you built, which circuit or pcb did you use?

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forestcaver
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Re: The 2020 Show Us Your DIY Builds Thread!

Post by forestcaver » Sat Mar 28, 2020 3:43 pm

Jarno wrote:
Sat Mar 28, 2020 3:24 pm
Oh, I figured that's what you built, which circuit or pcb did you use?
They’re all mine.

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audioCTRL
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Re: The 2020 Show Us Your DIY Builds Thread!

Post by audioCTRL » Sun Mar 29, 2020 5:41 am

I'm building these small standalone synth-modules.
Every module has its own build in psu and they are daisy chained with standard dc-dc jack cables.


IMG_8601.jpg
vco - vco - filter - filter - format jumper/unity mixer
lfo - sequencer - usg - vca/mix - vca/mix


IMG_8602.jpg
sequencer
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Barcode
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Re: The 2020 Show Us Your DIY Builds Thread!

Post by Barcode » Sun Mar 29, 2020 10:49 am

I had a HexInverter Liquid HiHat board laying around so I designed a dual vca + decay envelope "extander". I call it the Liquid HiHat XL. The LHH voices are normalized to the external input switched jacks, so you can you can plug anything in and make it a "drum". The temporary panel finally arrived from Ponoko.... so here it is.
front.jpg
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top.jpg
bottom.jpg
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chrischn2000
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Re: The 2020 Show Us Your DIY Builds Thread!

Post by chrischn2000 » Sun Mar 29, 2020 11:26 am

Stay at home time is DIY time...

Had a Korg monotron DUO here and always thought that it sounds cool but can't be played seriously in a set. So why not put it in the rack?! It's a fairly easy build, all necessary solder points are there. And on top the housing fits perfectly into eurorack!
IMG_20200329_180149__01__01.jpg
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hox3d
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Re: The 2020 Show Us Your DIY Builds Thread!

Post by hox3d » Sun Mar 29, 2020 12:19 pm

Just finished this today, the boards arrived two days ago.

Can you guess what it is?
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Matte-fueled habits

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