The 2020 Show Us Your DIY Builds Thread!

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

Moderators: luketeaford, Joe., lisa, Kent

Post Reply
EdwinSL
Learning to Wiggle
Posts: 4
Joined: Tue May 12, 2020 9:59 am

Re: The 2020 Show Us Your DIY Builds Thread!

Post by EdwinSL » Thu Jul 09, 2020 10:40 pm

Flounderguts wrote:
Thu Jul 09, 2020 4:04 pm
Where'd you get those sexy jack nuts?
Bananuts by Befaco, I love 'em, check them out in my little bamboo case I made earlier this year;
Image
4 passives, 2 times the AI Synthesis 010, a triple LP gate with own rolled vactrols and a crossfader.
Spraypainted alu panels with decal paper.

User avatar
romain
Learning to Wiggle
Posts: 23
Joined: Tue Aug 22, 2017 12:30 am

Re: The 2020 Show Us Your DIY Builds Thread!

Post by romain » Fri Jul 10, 2020 6:10 am

really nice job

User avatar
Revok
Ultra Wiggler
Posts: 776
Joined: Sun Jan 15, 2012 12:11 pm
Location: Phoenix

Re: The 2020 Show Us Your DIY Builds Thread!

Post by Revok » Fri Jul 10, 2020 9:06 pm

EdwinSL, I'm diggin' the panels. They look really nice.

User avatar
Reese P. Dubin
Super Deluxe Wiggler
Posts: 1355
Joined: Wed Dec 17, 2008 12:33 pm
Location: Absolute Elsewhere

Re: The 2020 Show Us Your DIY Builds Thread!

Post by Reese P. Dubin » Fri Jul 10, 2020 10:15 pm

um what is that crossfader?? thats exactly the final thing i need 4 of

nigel
Veteran Wiggler
Posts: 689
Joined: Wed Jan 16, 2013 6:49 am
Location: Melbourne, Australia

Re: The 2020 Show Us Your DIY Builds Thread!

Post by nigel » Fri Jul 10, 2020 11:57 pm

Haven't posted for a while, so here are my current projects, in varying stages of completion.

First a Binary Sequencer, my own design. It's a six bit counter, with each bit driving a pot. The six pot voltages are then mixed to provide a sequence of up to 64 steps. The clock input is thresholded, so it can accept slowly changing signals, and the clean clock is also available at an output. The Reset input can be used in either Gate or Trigger mode - in Gate mode, the counter is stopped while Reset is high. The CMOS parts are run on +/- 5 Volts instead of just using the positive rail, so that the pot voltages go from negative, through zero, to positive.
BbinarySeq.jpg
Next a Drone, with four VCOs. The VCO circuit is NLC's ultra simple design. The main frequency controls adjust all four, and set the final frequency of oscillator A. The B, C, and D controls manually offset the other three oscillators. Separate triangle outputs for all four are available, as well as two mixed outputs; one has the triangles rounded a little to reduce harmonics, while the other adds asymmetrical clipping to increase the harmonics.
Drone.jpg
The last is my layout of Kassutronics' slope generator, which is a voltage controlled rise / fall circuit, with some extras to provide an ADSR envelope as well as looping.
VCEnv.jpg
You do not have the required permissions to view the files attached to this post.

User avatar
Eloc
Veteran Wiggler
Posts: 510
Joined: Fri Jul 11, 2014 3:27 pm
Location: United Kingdom

Re: The 2020 Show Us Your DIY Builds Thread!

Post by Eloc » Sat Jul 11, 2020 8:07 am

@nigel Those all sound like really cool circuit designs. What circuit did you use to round the triangles off and also the clipping part. Is it diode based stuff? I see the two green LEDs in there. And I see the V/oct trim, it would be cool to have such a compact little 4 note chord/drone maker. Do they track quite well?

User avatar
andrewF
Super Deluxe Wiggler
Posts: 4033
Joined: Wed Apr 15, 2009 7:36 pm
Location: WA
Contact:

Re: The 2020 Show Us Your DIY Builds Thread!

Post by andrewF » Sat Jul 11, 2020 8:08 am

Very nice builds!!

nigel
Veteran Wiggler
Posts: 689
Joined: Wed Jan 16, 2013 6:49 am
Location: Melbourne, Australia

Re: The 2020 Show Us Your DIY Builds Thread!

Post by nigel » Sat Jul 11, 2020 8:50 am

Eloc wrote:
Sat Jul 11, 2020 8:07 am
@nigel Those all sound like really cool circuit designs. What circuit did you use to round the triangles off and also the clipping part. Is it diode based stuff? I see the two green LEDs in there. And I see the V/oct trim, it would be cool to have such a compact little 4 note chord/drone maker. Do they track quite well?
Yes, the signals go into a standard inverting mixer through a resistor / back to back diodes to ground / resistor. For the clipping mix, use only one diode on each input (in alternating directions, so that the total signal is still roughly symmetrical). I'm still tweaking the resistor values and diodes to get a result I like. I don't really do melodic sounds (due to a severe lack of talent), so I don't know how good the tracking is. (andrewF could probably give you some idea, it's just his OTA VCO core.) On an earlier version, I could build a chord and then move it up an octave or two with the voices staying in more or less the same relationship, which was enough for me.
andrewF wrote:
Sat Jul 11, 2020 8:08 am
Very nice builds!!
Thanks! It's good to have something to do while sitting at home all day. Maybe some day you'll let use visit again. :)

User avatar
Norgatron
Wiggling with Experience
Posts: 254
Joined: Tue May 05, 2015 8:03 am
Location: Leeds, West Yorkshire
Contact:

Re: The 2020 Show Us Your DIY Builds Thread!

Post by Norgatron » Sat Jul 18, 2020 5:04 pm

This one took a long time.

DIY HexInverter Électronique AteOhAte Toms/Congas with custom panel.

IMG_20200711_104123(1).JPG
As you can see I was keen to keep it in as few HP as possible and get the look right.
IMG_20200711_104134.JPG
IMG_20200711_104140.JPG
I got the PCBs back in 2017, but the mechanics took an age and it was a lot of work, incuding a 3D model to make sure it would all fit.
ezgif.com-crop.gif
The depth was never going to be anything other than skiff hostile.
But! It did finally get me into crimped connectors.
IMG_20200711_104004.JPG

More details on the construction here: http://ss30m.blogspot.com/2020/07/ateohate-toms.html
You do not have the required permissions to view the files attached to this post.
Yamaha SS30 strings - rack-mount with MIDI project - http://ss30m.blogspot.co.uk/

twigathy
Learning to Wiggle
Posts: 30
Joined: Mon Aug 12, 2019 4:46 pm

Re: The 2020 Show Us Your DIY Builds Thread!

Post by twigathy » Sat Jul 18, 2020 5:48 pm

It's time for another purple newbie build!

This time, an MS20-style OTA filter based on the design over here: https://www.schmitzbits.de/ms20.html - with a couple of tweaks to allow for high pass and low pass to be chosen.

The build was a bit of a mess, with resistors being the wrong size and the little headers connecting up the upper and lower logic boards being a real pain in the neck to get aligned. That'll teach me to stack things to save HP :)

The silkscreening on the front also could use a couple of changes... The bigger text is definitely easier on the eyes, but for the audio jacks unfortunately the text was just a little too close to the socket.

However, after all the trouble it does work so I'm pretty pleased! It makes some wacky noises and is great fun to control with my Keystep's mod touch strip.
IMG_20200718_230051.jpg
IMG_20200718_230143.jpg
IMG_20200718_230215.jpg
You do not have the required permissions to view the files attached to this post.

User avatar
sduck
experimental use of gravity
Posts: 13760
Joined: Wed Feb 18, 2009 6:03 pm
Location: Vortepexaion, TN, USA

Re: The 2020 Show Us Your DIY Builds Thread!

Post by sduck » Sat Jul 18, 2020 9:20 pm

Ok, more guitar pedals for now.
IMG_9270.JPG
Two more from Build Your Own Clone - I really like these guys - the kits are cheap, well documented, and easy - you can do them in an evening. And the sound for the most part is spot on - the big muff triangle sounds just like the real deal, and the dyna comp clone is great sounding - I used to have one of the original ones, and it was a secret weapon back in the day. Sold the original one years ago, and this one is a really close replacement.
You do not have the required permissions to view the files attached to this post.
flickr cloud of sound touyube NOT A MODERATOR ANYMORE

User avatar
mome rath
a dubious cube of margarine
Posts: 1371
Joined: Mon Jun 08, 2009 8:23 pm

Re: The 2020 Show Us Your DIY Builds Thread!

Post by mome rath » Sat Jul 18, 2020 10:03 pm

Norgatron wrote:
Sat Jul 18, 2020 5:04 pm
This one took a long time.

DIY HexInverter Électronique AteOhAte Toms/Congas with custom panel.


IMG_20200711_104123(1).JPG

As you can see I was keen to keep it in as few HP as possible and get the look right.

IMG_20200711_104134.JPG
IMG_20200711_104140.JPG

I got the PCBs back in 2017, but the mechanics took an age and it was a lot of work, incuding a 3D model to make sure it would all fit.

ezgif.com-crop.gif

The depth was never going to be anything other than skiff hostile.
But! It did finally get me into crimped connectors.
IMG_20200711_104004.JPG


More details on the construction here: http://ss30m.blogspot.com/2020/07/ateohate-toms.html

Image
Image
soundcloud, dear friends

good trader cred
instagraM
guest wrote:
Fri Jan 03, 2020 2:45 pm
basically, as the dude put it "no walter, youre not wrong, youre just an asshole".
zoogoo wrote: your stupid

User avatar
Dr. Sketch-n-Etch
Super Deluxe Wiggler
Posts: 7831
Joined: Thu Jan 21, 2010 1:46 pm
Location: Vancouver, BC, Canada

Re: The 2020 Show Us Your DIY Builds Thread!

Post by Dr. Sketch-n-Etch » Sun Jul 19, 2020 1:21 am

Wow, nigel and Norgatron, some nice builds there!

nigel, some of your boards have a "Doc Sketchy" look to them. I approve!

Norgatron, that mad stack reminds me of some of my crazier projects. I've never used a 3D CAD model, though. Just Excel and a bit of luck. Super nice panel!
this night wounds time,

User avatar
Rex Coil 7
Super Deluxe Wiggler
Posts: 6787
Joined: Thu Nov 29, 2012 11:29 am
Location: Captain Of Outer Space

Re: The 2020 Show Us Your DIY Builds Thread!

Post by Rex Coil 7 » Sun Jul 19, 2020 2:02 am

jochem wrote:
Fri May 08, 2020 12:50 am
sduck wrote:
Thu May 07, 2020 9:45 pm
Is there some secret way you can buy those knobs by themselves? I can only find that you can get them if you buy them as part of a kit. Kind of an expensive way to get not enough of them...
They have them listed seperately here: https://capi-gear.com/catalog/product_i ... cts_id=222
The smallest one is $5.
They are very nice indeed!

EDIT: i didn't read the full page. They won't sell them because of copyright.
The do sell them, just without the colored center insert ...

LINK =
https://capi-gear.com/catalog/index.php?cPath=202_206
You mean this place has hot chicks, morning drinking, and free vomit? ... I'm all in!
5U PROJECT - (skip pages 4 through 6, boring junk) ... viewtopic.php?t=78836&highlight=
Never Quit, Die Falling Forward

User avatar
Rex Coil 7
Super Deluxe Wiggler
Posts: 6787
Joined: Thu Nov 29, 2012 11:29 am
Location: Captain Of Outer Space

Re: The 2020 Show Us Your DIY Builds Thread!

Post by Rex Coil 7 » Sun Jul 19, 2020 3:05 am

sduck wrote:
Wed Mar 18, 2020 10:46 am
Ahhh, forced isolation. Things start happening. Here's one. Actually, I finished 2 of these, but haven't quite figured out the color scheme for the second one yet. No need to have them be the same, right?

IMG_4540.JPG
So how well are these colored Banananut holding up in use? I wonder how the anodized finish is resisting scratches from the tips of patch cables. Watching some modular videos is downright painful, close-up shots of the operators' hands shaking so bad that hitting a jack with a patch cable seems like an impossible task. That said, I wonder how well these anodized machined aluminum nuts are going to look after some time in use. Imagining the shaky hand with the patch cable, scratching around in an attempt to blindly find the damned hole ... in that environment I wonder how long those nuts will look good?

HA! .... Actually makes me wonder how guys like that can actually manage procreation.

:yay:
You do not have the required permissions to view the files attached to this post.
You mean this place has hot chicks, morning drinking, and free vomit? ... I'm all in!
5U PROJECT - (skip pages 4 through 6, boring junk) ... viewtopic.php?t=78836&highlight=
Never Quit, Die Falling Forward

User avatar
dot matrix madness
Wiggling with Experience
Posts: 439
Joined: Fri Aug 23, 2013 2:48 am
Location: Germany, SB

Re: The 2020 Show Us Your DIY Builds Thread!

Post by dot matrix madness » Sun Jul 19, 2020 4:49 am

Norgatron wrote:
Sat Jul 18, 2020 5:04 pm
This one took a long time.
DIY HexInverter Électronique AteOhAte Toms/Congas with custom panel.
[...]
Awesome! Just started building the Toms/Congas section from the original schematics.
Luckily I still can include the additional Decay poti(s).
Licenced to solder since 1993

User avatar
J3RK
Super Deluxe Wiggler
Posts: 6619
Joined: Tue Dec 22, 2009 12:46 pm
Location: Seattle

Re: The 2020 Show Us Your DIY Builds Thread!

Post by J3RK » Wed Jul 22, 2020 12:20 am

Starting some new LW modules:
9100D63F-5D01-4E64-AC07-CE2152E8DB88.jpeg
You do not have the required permissions to view the files attached to this post.
Are you lemon? Does your head come to a nub?

jochem
Learning to Wiggle
Posts: 34
Joined: Fri Nov 18, 2016 1:09 pm
Location: netherlands

Re: The 2020 Show Us Your DIY Builds Thread!

Post by jochem » Wed Jul 22, 2020 12:40 am

J3RK wrote:
Wed Jul 22, 2020 12:20 am
Starting some new LW modules
I really like the look of your system.

User avatar
J3RK
Super Deluxe Wiggler
Posts: 6619
Joined: Tue Dec 22, 2009 12:46 pm
Location: Seattle

Re: The 2020 Show Us Your DIY Builds Thread!

Post by J3RK » Wed Jul 22, 2020 2:12 pm

jochem wrote:
Wed Jul 22, 2020 12:40 am
I really like the look of your system.
Thank you!
Are you lemon? Does your head come to a nub?

User avatar
mome rath
a dubious cube of margarine
Posts: 1371
Joined: Mon Jun 08, 2009 8:23 pm

Re: The 2020 Show Us Your DIY Builds Thread!

Post by mome rath » Wed Jul 22, 2020 3:30 pm

I built another Elby slope but it set itself on fire, so I've got some head scratching ahead of me for that. Might be time to add a microscope.

Anyways, this works and sounds wonderful (x0xb0x; below). 5% carbon film resistors unless otherwise specified. Some chap on Reddit very authoritatively told me that there is no reason sloppier parts should sound better. But I hit the magic combo in this one :love:

I tested 9.2k and 9.53k at R97 and those were too whistly. 9.76k was the magic spot on this b0x (that's the one socketed on the top).

knobs: "coolorcaps" (with 2 "o")

61671940130--1D36FAAB-0F8D-49E3-80FA-D44691872FF7.jpg
You do not have the required permissions to view the files attached to this post.
Last edited by mome rath on Sat Jul 25, 2020 11:40 am, edited 1 time in total.
Image
soundcloud, dear friends

good trader cred
instagraM
guest wrote:
Fri Jan 03, 2020 2:45 pm
basically, as the dude put it "no walter, youre not wrong, youre just an asshole".
zoogoo wrote: your stupid

User avatar
sduck
experimental use of gravity
Posts: 13760
Joined: Wed Feb 18, 2009 6:03 pm
Location: Vortepexaion, TN, USA

Re: The 2020 Show Us Your DIY Builds Thread!

Post by sduck » Fri Jul 24, 2020 9:49 pm

This one was surprising fast and easy, and really a well designed module and kit also -
DSC00817-2.jpg
IMG_1249.JPG
IMG_1303.JPG
You do not have the required permissions to view the files attached to this post.
flickr cloud of sound touyube NOT A MODERATOR ANYMORE

User avatar
Bjarne
Common Wiggler
Posts: 101
Joined: Sat Jul 20, 2013 10:31 am
Location: Stockholm

Re: The 2020 Show Us Your DIY Builds Thread!

Post by Bjarne » Sat Jul 25, 2020 1:35 am

It looks great, but what is it? :tu: :hmm:
mome rath wrote:
Wed Jul 22, 2020 3:30 pm
Anyways, this works and sounds wonderful (below).

twigathy
Learning to Wiggle
Posts: 30
Joined: Mon Aug 12, 2019 4:46 pm

Re: The 2020 Show Us Your DIY Builds Thread!

Post by twigathy » Sat Jul 25, 2020 7:12 am

More newbie things! This time a DC-coupled multiple, with a fancypants bi-colour LED to indicate what's going on. This was a wonderfully stress-free build, the only problem is I'm out of 100R resistors to build the other two PCBs :). More programmer art on the front, I think it makes it nice and clear just what's going on so that's cool.

I just took http://musicfromouterspace.com/analogsy ... dist2.html and added an LED instead of the fourth audio output.

As an aside, I see quite a few 2HP multiple modules that seem to cram an impossible amount of audio jacks into such a tiny (vertical) space. How is that done? Do people use different-to-thonkiconn jacks in these, or do they forgo the ground connection? Or do the PCBs end up being a sandwich of panel - front pcb - rear pcb? Or, is this where surface mount comes in handy?
You do not have the required permissions to view the files attached to this post.

User avatar
mome rath
a dubious cube of margarine
Posts: 1371
Joined: Mon Jun 08, 2009 8:23 pm

Re: The 2020 Show Us Your DIY Builds Thread!

Post by mome rath » Sat Jul 25, 2020 11:09 am

Bjarne wrote:
Sat Jul 25, 2020 1:35 am
It looks great, but what is it? :tu: :hmm:
mome rath wrote:
Wed Jul 22, 2020 3:30 pm
Anyways, this works and sounds wonderful (below).
oh right
it’s a x0xb0x
Image
soundcloud, dear friends

good trader cred
instagraM
guest wrote:
Fri Jan 03, 2020 2:45 pm
basically, as the dude put it "no walter, youre not wrong, youre just an asshole".
zoogoo wrote: your stupid

User avatar
Datum
Common Wiggler
Posts: 107
Joined: Thu Jul 04, 2019 3:17 pm

Re: The 2020 Show Us Your DIY Builds Thread!

Post by Datum » Sat Jul 25, 2020 12:48 pm

Norgatron wrote:
Sat Jul 18, 2020 5:04 pm
This one took a long time.

DIY HexInverter Électronique AteOhAte Toms/Congas with custom panel.
Great job with this! You absolutely crushed the design. I enjoyed reading through the entire process on your blog. Going with the authentic 808 and 909 design really looks terrific. :yay:

Post Reply

Return to “Music Tech DIY”