Search found 677 matches

by whoop_john
Fri Jul 02, 2021 3:03 pm
Forum: Music Tech DIY
Topic: Front panel legend techniques
Replies: 14
Views: 478

Re: Front panel legend techniques

Regarding Inkscape on Apple Mac, I am having serious issues with it regarding importing SVG files or PDFs. It is converting the CMYK colo(u)rs to an rgb model, so the pure black in the CMYK file is smearing across all the colours, to produce a black in the K channel that is about 72%. Julian over at...
by whoop_john
Sat Jun 26, 2021 9:04 am
Forum: Music Tech DIY
Topic: I think I`m building a synthesizer.
Replies: 138
Views: 3163

Re: I think I`m building a synthesizer.

My best bit of advice with an electric jigsaw is to check the blade is at 90º to the base plate before cutting. When you do cut, let the saw do the cutting, not you doing the pushing. If you push, the blade tends to sway to one side or the other. So use a good a fresh blade and take your time with t...
by whoop_john
Mon Jun 14, 2021 12:23 pm
Forum: Music Tech DIY
Topic: Eurorack PCB faceplate
Replies: 14
Views: 436

Re: Eurorack PCB faceplate

I am trying to design a PCB faceplate for my modules, but I am new to PCB design and I have some questions. The design: https://i.imgur.com/6O8IE8m.png When I upload it to JLCPCB, in the analyis section there are some exclamation mark. I don't know, that it's just a warning, or I have an issue with...
by whoop_john
Mon Jun 14, 2021 6:32 am
Forum: Music Tech DIY
Topic: History of Synth DIY: Opinions requested
Replies: 119
Views: 3491

Re: History of Synth DIY: Opinions requested

It seems as if we need at least a US timeline, a European timeline and an Australian timeline, as all these had different threads. It's probably a Hydra-headed monster.
by whoop_john
Mon Jun 14, 2021 6:26 am
Forum: Music Tech DIY
Topic: History of Synth DIY: Opinions requested
Replies: 119
Views: 3491

Re: History of Synth DIY: Opinions requested

If we're including names then Tim Orr has to come on it. Numerous magazine articles and projects, all of which worked rather then needing major reworking as many other authors' designs did. He also worked for EMS and Akai, where he produced some of the worst synth colour schemes in history :-) Agre...
by whoop_john
Sat Jun 12, 2021 6:30 pm
Forum: Music Tech DIY
Topic: History of Synth DIY: Opinions requested
Replies: 119
Views: 3491

Re: History of Synth DIY: Opinions requested

Well OK, but if you are talking about UK Modular, which does not include ANY of the above projects, as they were essentially pre-configured synths, Read the OP again. "We want to use it to create a synth-DIY 'timeline' of sorts." No mention of having to be modular, and indeed most DIY synths in the...
by whoop_john
Sat Jun 12, 2021 4:59 pm
Forum: Music Tech DIY
Topic: History of Synth DIY: Opinions requested
Replies: 119
Views: 3491

Re: History of Synth DIY: Opinions requested

From a British point of view, Synth DIY was helped along considerably by these three series of articles : Practical Electronics : http://www.timstinchcombe.co.uk/index.php?pge=pemini#pess Wireless World : http://yusynth.net/archives/WirelessWorld/Electronic-sound-Synthesizer.pdf ETI : https://encyc...
by whoop_john
Mon May 17, 2021 2:57 pm
Forum: Music Tech DIY
Topic: 5-way splitter
Replies: 3
Views: 333

Re: 5-way splitter

Did you just reinvent a 5 way version of the very cheap 6 way splitter, available easily from many sources? Image
by whoop_john
Wed Mar 24, 2021 12:36 pm
Forum: Music Tech DIY
Topic: SPDT (on)-off-on toggle switch sources
Replies: 13
Views: 892

Re: SPDT (on)-off-on toggle switch sources

htor wrote:
Wed Mar 24, 2021 8:10 am
thanks for the Ali tip!
I didn't find a "sub mini" size for the (ON)-OFF-ON SPDT switch, but that's fine really. Seems uncommon.
I gave you a link directly to the Aliexpress item - it's https://www.aliexpress.com/item/32759244103.html. It is submini. The height of the body is 7.5mm high.
by whoop_john
Tue Mar 23, 2021 10:51 pm
Forum: Music Tech DIY
Topic: SPDT (on)-off-on toggle switch sources
Replies: 13
Views: 892

Re: SPDT (on)-off-on toggle switch sources

I'm having a hard time source a sub mini SPDT (ON)-OFF-ON toggle switch for eurorack. I've found a nice one on Farnell, but they want my VAT number, and i don't have one. the same goes for RS and Mouser. they all want my VAT number, so i'm unable (it seems) to buy anything from them. :deadbanana: :...
by whoop_john
Sun Feb 28, 2021 3:38 pm
Forum: Music Tech DIY
Topic: Turing machine front end
Replies: 3
Views: 253

Turing machine front end

155517867_1422952048045403_8308517665498560272_o.jpg
by whoop_john
Tue Dec 29, 2020 12:27 am
Forum: Music Tech DIY
Topic: A joystick schematic acceptance
Replies: 10
Views: 510

Re: A joystick schematic acceptance

If you want there to be a middle dead zone where the voltage doesn't change, a couple of back-to-back diodes in parallel before the op-amp input is a good idea.
by whoop_john
Sat Dec 19, 2020 3:16 pm
Forum: Music Tech DIY
Topic: Help with MIDI wiring/switching
Replies: 6
Views: 273

Re: Help with MIDI wiring/switching

Midi merger? Didn’t know that word but it makes sense. Thanks, learned something today :tu: MIDI merging seems easy, until you realise you have to arbitrate if you get conflicting MIDI clock pulses from two or more sources at once, or you have a synth that sends running status, in which case you ha...
by whoop_john
Tue Dec 08, 2020 3:47 pm
Forum: Music Tech DIY
Topic: PROGUE - Analog mono synth - Available!
Replies: 259
Views: 14621

Re: PROGUE - Analog mono synth - AUDIO DEMO

I am happy with SMD. Go with it.
by whoop_john
Sun Aug 16, 2020 4:13 pm
Forum: Music Tech DIY
Topic: Cheap pot caps for cheap pots
Replies: 11
Views: 633

Re: Cheap pot caps for cheap pots

How much do you people perspire? These are perhaps for ambient chill use only then. Seriously, they are going to be absolutely fine for me - I don't need vice grips to get them to turn. I'll ask my Chinese medicine practitioner and martial art teachers about the chrome and vanadium. This is an amaz...
by whoop_john
Thu Jul 30, 2020 12:03 am
Forum: Music Tech DIY
Topic: Cheap pot caps for cheap pots
Replies: 11
Views: 633

Re: Cheap pot caps for cheap pots

Sandrine wrote:
Wed Jul 29, 2020 1:58 pm
Haha! I like them! I have been using a 3D printer to knob those but these look so much nicer, I'm getting some
BTW which ones? 5 or 6mm?
I bet those 3mm's would work for 6x6 push button covers wow
I bought the 6mm internal diameter caps. Good idea about the 3mm ones for tactile buttons, Sandrine.
by whoop_john
Wed Jul 29, 2020 1:33 pm
Forum: Music Tech DIY
Topic: Cheap pot caps for cheap pots
Replies: 11
Views: 633

Re: Cheap pot caps for cheap pots

How much do you people perspire? These are perhaps for ambient chill use only then. Seriously, they are going to be absolutely fine for me - I don't need vice grips to get them to turn. I'll ask my Chinese medicine practitioner and martial art teachers about the chrome and vanadium.
by whoop_john
Wed Jul 29, 2020 6:39 am
Forum: Music Tech DIY
Topic: Cheap pot caps for cheap pots
Replies: 11
Views: 633

Cheap pot caps for cheap pots

I don't know if any of you use this style of pot which has a plastic shaft and screwdriver slot. I was looking for something to make them look a little better and found these caps on Aliexpress in the Jewellery section. They are shiny stainless steel. While not very deep, they do cap the knobs off w...
by whoop_john
Tue Jul 14, 2020 2:29 am
Forum: Music Tech DIY
Topic: [Project] Turing Machine Mk2
Replies: 605
Views: 63862

Re: [Project] Turing Machine Mk2

What a real Turing machine looks like…
Array Cell Address Check_2.jpg
by whoop_john
Fri Jun 26, 2020 3:15 pm
Forum: Music Tech DIY
Topic: MIDI - CV options?
Replies: 9
Views: 841

Re: MIDI - CV options?

I have a pair of Eurorack Modular Solos from Kenton. Not cheap, but full of useful features you won't find anywhere else and professional studio quality. Recommended.

https://kentonuk.com/product/modular-solo/
by whoop_john
Fri Jun 19, 2020 3:53 am
Forum: Music Tech DIY
Topic: What is wrong with my Baby8?
Replies: 6
Views: 535

Re: What is wrong with my Baby8?

Kristian has a youtube series on the Baby 8 and links to schematics. Perhaps these would help you? Baby 8 Sequencer on Youtube.
by whoop_john
Sun Jun 14, 2020 6:31 am
Forum: Music Tech DIY
Topic: OPERA ROTAS, a DIY mutant drum machine BUILD THREAD
Replies: 235
Views: 16176

Re: OPERA ROTAS, a DIY mutant drum machine

Great... I didn´t know about the opera molas version. I thought opera rotas was the only know magic square in existence :D So this is for invoking femenine spirits? Juicy... There are a few more magic squares of this nature. Scope here for naming your future projects. https://i.imgur.com/Rwmnl4L.jpg
by whoop_john
Sat Jun 13, 2020 3:04 pm
Forum: Music Tech DIY
Topic: OPERA ROTAS, a DIY mutant drum machine BUILD THREAD
Replies: 235
Views: 16176

Re: OPERA ROTAS, a DIY mutant drum machine

Or perhaps the other version:

SALOM
AREPO
LEMEL
OPERA
MOLAS

Coming under the rule of Venus, this is used to obtain the love of a maiden. What kind of QBListic magik is this infernal device of which you speak?
by whoop_john
Sat Jun 13, 2020 3:01 pm
Forum: Music Tech DIY
Topic: OPERA ROTAS, a DIY mutant drum machine BUILD THREAD
Replies: 235
Views: 16176

Re: OPERA ROTAS, a DIY mutant drum machine

Isn't the full version:

SATOR
AREPO
TENET
OPERA
ROTAS

The Greater Seal of Solomon, under the influence of Saturn. Will it work if you only use part of the spell?
by whoop_john
Tue May 12, 2020 11:32 am
Forum: Music Tech DIY
Topic: System700 clone: 14,4V
Replies: 3
Views: 379

Re: System700 clone: 14,4V

Hello, on the yusynth website I found several interesting System 700 schematics: http://yusynth.net/gear/R700_MC_en.html For example the VCA 704A/B required 14,4v for the LED control: http://yusynth.net/gear/ROLAND/R700-schematics/704-ABCD-VCA.pdf How can i generate the 14,4v? Or it works also with...

Go to advanced search