Search found 298 matches

by LeftyLogic
Tue Sep 19, 2017 6:17 pm
Forum: Music Tech DIY
Topic: PCBs as Front Panels ?
Replies: 233
Views: 23206

Is there some easy way to turn illustrator layers into a gerber zip? seems kinda annoying using pcb software to basically layout vector art and cutting/hole lines. I typically use the import DXF function in KiCAD to get my panel art into the program, then line up mounting holes with the outlines on...
by LeftyLogic
Thu Aug 03, 2017 11:08 pm
Forum: Music Tech DIY
Topic: Pcb / Panel available - 1J17B Tube VCF eurorack
Replies: 74
Views: 10535

That sounds fantastic!
by LeftyLogic
Thu Jun 08, 2017 8:35 pm
Forum: Music Tech DIY
Topic: Pcb / Panel available - 1J17B Tube VCF eurorack
Replies: 74
Views: 10535

The tube in that circuit isn't doing anything special whatsoever. You can probably just switch it directly over to 12 volts without much (if any) change in overall sound. It looks like the diodes in the heater circuit are being used as a crude voltage regulator. Just straight up swapping that entire...
by LeftyLogic
Wed May 24, 2017 11:56 pm
Forum: Music Tech DIY
Topic: nonlinearcircuits 2017 modules (bindubba & covfefe added
Replies: 241
Views: 28955

Oh that looks phenomenal. Is it a new design or is it based off of an existing through-zero core?
by LeftyLogic
Wed May 24, 2017 11:51 pm
Forum: Metasonix
Topic: DIY Metasonix drone
Replies: 1
Views: 1181

DIY Metasonix drone

Hi all, I just recorded a drone with my DIY PT-2 as the main sound source, and I thought some of you might enjoy hearing what it sounds like: [soundcloud url="https://api.soundcloud.com/tracks/324376948" params="auto_play=false&hide_related=false&show_comments=true&show_user=true&show_reposts=false&...
by LeftyLogic
Sun May 21, 2017 11:47 pm
Forum: Music Tech DIY
Topic: Front Panel Express template graphics
Replies: 5
Views: 480

FPE actually has a really awesome knob scale generator plugin they've made available: https://www.frontpanelexpress.com/downloads/scripts/ It's a little clunky but works great, and once you've gotten a few scales you like, you can just copy and paste them between FPD projects and never have to use t...
by LeftyLogic
Thu Apr 27, 2017 10:11 pm
Forum: Music Tech DIY
Topic: PCBs as Front Panels ?
Replies: 233
Views: 23206

Hi all, I have submitted a panel design and a board design to PCBway. The board has past the inspection within an hour. But the panel design, I have been waiting for more than a day now. What is going on? :hmm: Since the panel doesn't require any copper, so I submit a gerber with a copper top layer...
by LeftyLogic
Thu Apr 27, 2017 12:16 am
Forum: Music Tech DIY
Topic: Looking for 741 based VCF schematics
Replies: 14
Views: 787

741's really aren't all that great. I'd recommend using the TL07x series instead. AFAIK you aren't gonna get much "character" out of a 741, just poor specs.
by LeftyLogic
Thu Apr 20, 2017 8:40 am
Forum: Music Tech DIY
Topic: PCBs as Front Panels ?
Replies: 233
Views: 23206

Another easy way to do PCB panels in KiCAD is to export your entire panel layout in DXF format from whatever program you're using to design it, and then import that directly into PCBNew. Then, all you have to do is align the holes correctly and you're set!
by LeftyLogic
Fri Apr 14, 2017 12:01 pm
Forum: Music Tech DIY
Topic: PCBs as Front Panels ?
Replies: 233
Views: 23206

I used Project-PCB when I did the Living Memory VCOs run. Not the cheapest for small quantities, but far better quality than ITEAD or the like. They also have a matte black option which is absolutely goddamn gorgeous. :love:
by LeftyLogic
Fri Apr 14, 2017 11:56 am
Forum: Eurorack Modules
Topic: What do you absolutely not need but stays on your rack?
Replies: 92
Views: 4634

ignatius wrote:VCAs
But... But... But... :vcas:
by LeftyLogic
Sat Apr 08, 2017 10:10 pm
Forum: BugBrand Devices
Topic: *VIDEO* PTDelay, Bass guitar and Microbrute
Replies: 6
Views: 1582

Holy crap that is a gorgeous sounding delay
by LeftyLogic
Tue Apr 04, 2017 8:42 pm
Forum: Eurorack Modules
Topic: Post pics of your euro setup!
Replies: 14709
Views: 2831023

filce wrote:So today, with the arrival of the Disting MK4s, I completed the build of my modular synth. It took 3 months in total, and it’s very, very small…
That is friggin glorious :lol:
by LeftyLogic
Tue Apr 04, 2017 7:51 pm
Forum: Music Tech DIY
Topic: Buchla 158 core spice simulation
Replies: 8
Views: 863

With some adjustments and a trimmer I was able to get roughly 3 octaves of 1/v oct tracking out of the circuit as is. I wasn't testing for drift though and it was in a case where the temp around the expo convertors probably wasn't changing much. But it was much more stable than I expected. Oh nice!...
by LeftyLogic
Mon Apr 03, 2017 6:49 pm
Forum: Music Tech DIY
Topic: Buchla 158 core spice simulation
Replies: 8
Views: 863

If your looking at the bad photocopy version of the 158A schematic then the saw to tri converter is the section between C4 and the base of Q14. Thanks! Turns out I was just having some level shift issues, and now that I've gotten that fixed it works great! The REALLY interesting part of the 158 "A"...
by LeftyLogic
Mon Apr 03, 2017 6:29 pm
Forum: Music Tech DIY
Topic: The 2017 Show Us Your DIY Builds Thread
Replies: 566
Views: 63326

I somehow never saw this line of tube modules when poring over the CGS lineup, thanks for bringing it to my atttention! Looks great, please post some demos if you have time - I'd love to hear it. Thank you, and you're welcome! I'm planning on putting up some demos as soon as I get this thing set ba...
by LeftyLogic
Sun Apr 02, 2017 7:19 pm
Forum: Music Tech DIY
Topic: Buchla 158 core spice simulation
Replies: 8
Views: 863

Buchla crashed Spice :hihi: Heh, yeah, darn thing spent all night yesterday trying to crash, and finally got around to it. :hihi: Don used what I'm told is a cusp cancellation circuit in the sine shapers of the 158, all three 258 versions, the 208, and 259. He used an Idss selected 2N4339 in all of...
by LeftyLogic
Sun Apr 02, 2017 5:37 pm
Forum: Music Tech DIY
Topic: Buchla 158 core spice simulation
Replies: 8
Views: 863

Buchla 158 core spice simulation

Hi all, Over the last few days I've been messing around with a 158 VCO core that I set up in LTSpice, and I thought someone here might be interested in it. https://www.muffwiggler.com/forum/userpix2/11964_158_core_1.jpg It's based off this schematic from Peake 's site, but using modern transistors a...
by LeftyLogic
Fri Mar 31, 2017 7:03 pm
Forum: Music Tech DIY
Topic: The 2017 Show Us Your DIY Builds Thread
Replies: 566
Views: 63326

Finally able to post something of mine in the 2017 thread! :banana: This is a clone of the Metasonix PT-2 that I've been working on for the past few weeks: https://www.muffwiggler.com/forum/userpix2/11964_tube_station_1.jpg It's based on schematics from the CGS site, and constructed with about an e...
by LeftyLogic
Wed Mar 29, 2017 5:57 pm
Forum: Music Tech DIY
Topic: The 2017 Show Us Your DIY Builds Thread
Replies: 566
Views: 63326

roglok wrote:
the bad producer wrote:Here are some (probably enormous, sorry, dunno how to make them smaller!) pictures of some stuff I've built this year:
Pics of stuff you've built can't be big enough. :party:
+1

LOVE your aesthetic! :love:
by LeftyLogic
Sun Mar 26, 2017 6:07 pm
Forum: Music Tech DIY
Topic: The 2017 Show Us Your DIY Builds Thread
Replies: 566
Views: 63326

And (as usual) Cheradenine has won the thread again! :deadbanana: :sb:
by LeftyLogic
Sat Mar 25, 2017 11:51 pm
Forum: Eurorack Modules
Topic: Post pics of your euro setup!
Replies: 14709
Views: 2831023

Derp wrote:
Currently up to 84u (28 rows, 2299hp) of Eurorack and 53 spaces of Synthesizers.com.
:woah: Holy crap
by LeftyLogic
Sun Mar 19, 2017 11:08 pm
Forum: Modular Synth General Discussion
Topic: How many of you were traditional musicians before modular?
Replies: 69
Views: 2626

nickbaba wrote:Modular is the new folk music.
I've been playing folk music for most of my life, and I completely agree with this! Believe it or not there are a ton of parallels between the folk music and modular synthesizer communities.
by LeftyLogic
Thu Mar 16, 2017 12:33 am
Forum: Music Tech DIY
Topic: LW *AND* 4U Stuff
Replies: 264
Views: 21375

Oh that's pretty :love:
by LeftyLogic
Mon Feb 27, 2017 1:14 pm
Forum: Eurorack Modules
Topic: Pulsating: Cwejman PH-8 modulating four VCO-6's
Replies: 35
Views: 1300

That was freaking awesome! I'd love to hear a full track made out of any of those excerpts. :sb:

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