Search found 637 matches

by whoop_john
Sat Jan 11, 2020 8:00 am
Forum: Music Tech DIY
Topic: Eagle is no more, all hail Fusion 360
Replies: 13
Views: 917

Re: Eagle is no more, all hail Fusion 360

For those on an Apple Mac Osmond PCB is really very good. It is now totally free, with no restrictions. It isn't bloatware either, about 10meg.
by whoop_john
Mon Dec 30, 2019 4:06 pm
Forum: Music Tech DIY
Topic: Help with troubleshooting LFO!
Replies: 6
Views: 197

Re: Help with troubleshooting LFO!

Me neither. Pin 11 is the S&H rate requiring a 0-5v voltage. But if he ties this to ground, it just means S&H is off. This should not affect anything else. The stripboard layout is all over the place - I can't make any sense of it - he's been on the whacky-baccy. Go back to https://electricdruid.net...
by whoop_john
Wed Dec 04, 2019 12:49 pm
Forum: Music Tech DIY
Topic: [ORDER] OCTOGINTA-II Digisound 80-2 eurorack version
Replies: 95
Views: 7897

Looks beautiful. I’m still building my three VCOs, I’ll post the finished build in my rack with some demos. I’d love to hear a demo of your quad, especially through the wavefolders. Very inspirational project. :yay: The project is still active if people want PCBs. Julian's panels are also available...
by whoop_john
Sun Oct 27, 2019 10:11 am
Forum: Music Tech DIY
Topic: How do i remove paint from Synth front panel
Replies: 10
Views: 409

You can try brake fluid.
by whoop_john
Sun Sep 29, 2019 6:55 pm
Forum: Music Tech DIY
Topic: pre-drilled panel source
Replies: 17
Views: 828

nrrrd wrote:Thanks. I should have said that I'm in the UK, so something in the EU would be good.
Julian will come in about half the cost of Schaeffer and he is in Devon. Tip-top quality.
by whoop_john
Thu Sep 26, 2019 4:06 pm
Forum: Music Tech DIY
Topic: pre-drilled panel source
Replies: 17
Views: 828

A +1 for Julian. He's off the spectrum when it comes to accuracy. His work is worth every penny and is good value for money.

I am a cheapskate myself, but I do try to remember the old adage "The bitter taste of a job gone wrong lasts a lot longer than the sweet taste of a cheap price."
by whoop_john
Thu Sep 12, 2019 10:39 am
Forum: Music Tech DIY
Topic: I need a pretty simple PCB made, anyone for hire?
Replies: 14
Views: 615

I am in Spain right now. Home late Saturday. Will take a look at your docs on my return, unless someone else picks up the gauntlet.
by whoop_john
Wed Sep 11, 2019 6:03 am
Forum: Music Tech DIY
Topic: I need a pretty simple PCB made, anyone for hire?
Replies: 14
Views: 615

I can do this and organise PCBs, but to avoid too much to-ing and fro-ing you should cut and paste the schematics you desire into some coherent form. A BOM would be an added bonus but not really necessary. If you have preferred switches, sockets etc. the spec. sheet should be supplied for these.
by whoop_john
Thu Aug 22, 2019 2:10 am
Forum: Music Tech DIY
Topic: Trapezoid VCO
Replies: 49
Views: 3755

Great work, thanks for sharing. I am very interested in making a eurorack version of this. I can work with Julian on a euro panel. Of course I'd only work with the blessing of Harald Antes.
by whoop_john
Thu Aug 08, 2019 4:43 am
Forum: Music Tech DIY
Topic: Knurled/round potentiometer nuts?
Replies: 12
Views: 696

by whoop_john
Tue Aug 06, 2019 2:38 pm
Forum: Music Tech DIY
Topic: sourcing small through hole resistors - befaco
Replies: 18
Views: 928

All the 1/4 watts I've had from Aliexpress have been the fine lead variety, with the usual size bodies.

Aliexcuse resistor example
by whoop_john
Sun Jul 28, 2019 6:49 am
Forum: Music Tech DIY
Topic: thomas henry BD ++ stripboard layout and video
Replies: 5
Views: 704

I wrote to Thomas Henry to ask whether I could make and sell a few of his simple LFOs and he said yes, go ahead. I think it is only polite to ask, even though strictly the circuit was so generic he couldn't really complain. It's just good manners.
by whoop_john
Fri Jun 21, 2019 11:52 am
Forum: Music Tech DIY
Topic: Cheapest way to build an eurorack case
Replies: 23
Views: 863

You might consider Makerbeam. This has a 10mm profile and M3 bolts.
https://www.technobotsonline.com/makerbeam-beams.html

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by whoop_john
Fri Jun 21, 2019 9:57 am
Forum: Music Tech DIY
Topic: If you plan to make a Yusynth system...
Replies: 16
Views: 1860

I am up for doing Eurorack version PCBs, but only if Yves agrees to it first - he might like a royalty fee for all his hard work in the past. If this goes ahead I'd like someone to collaborate with checking and testing. The person who lays out the design should not be the one to check his or her wor...
by whoop_john
Sun Jun 09, 2019 6:04 am
Forum: Music Tech DIY
Topic: (No longer) stumped by VCS3 filter problem
Replies: 56
Views: 2148

Image

Not mine, this one belonged to Richard Wright of Pink Floyd.
by whoop_john
Sun Jun 09, 2019 5:45 am
Forum: Music Tech DIY
Topic: Frontplate design w LED light channels, help needed
Replies: 20
Views: 689

How about a small piece of black heatshrink over each LED? A lot of work I guess.

I'd probably use a 00 size artist's brush and black acrylic paint.
by whoop_john
Wed Apr 24, 2019 12:03 pm
Forum: Music Tech DIY
Topic: [ORDER] OCTOGINTA-II Digisound 80-2 eurorack version
Replies: 95
Views: 7897

Very professional build. I may have one or two Octoginta II PCBs left, but I am more than happy to reorder stock if there is a demand. Julian also provides lovely panels. Whoop John Rock solid design of the VCO!!! Here's what I did with four of them. http://millionmachinemarch.com/wp-content/uploads...
by whoop_john
Thu Apr 18, 2019 1:50 am
Forum: Music Tech DIY
Topic: trigonometry
Replies: 12
Views: 1010

If what you are trying to do is place that pin in a PCB program, I usually deal with it by placing a temporary pin at the rotation point and group it with the pin I want to rotate, placed on one of the cardinal points. Then I can rotate the grouped pair by 45º by clicking on the temporary pin, ungro...
by whoop_john
Tue Mar 19, 2019 10:41 am
Forum: Music Tech DIY
Topic: Panels/Faceplates: where/how do you get them?
Replies: 45
Views: 5294

a +1 for Julian, he does great work, both engraving and silk-screening.
by whoop_john
Tue Mar 19, 2019 10:40 am
Forum: Music Tech DIY
Topic: Panels/Faceplates: where/how do you get them?
Replies: 45
Views: 5294

Re: Panels/Faceplates: where/how do you get them?

Hi all! So I'm thinking this year I'm going to build my own modular... assuming I don't get a job and just buy a Pittsburgh Foundation or something. :hihi: I also want to build the Transcendent 2000 (yes, the one from 1978, featured in Electronics Today). For both of these, I'd need large plates o'...
by whoop_john
Sat Mar 16, 2019 4:03 am
Forum: Music Tech DIY
Topic: PCB making
Replies: 10
Views: 691

I used to use toner transfer, etch and drill all my own boards, but it simply is not worth the time and effort these days.
by whoop_john
Sun Mar 03, 2019 4:25 pm
Forum: Music Tech DIY
Topic: Curved traces on PCBs, what software do you use?
Replies: 32
Views: 1366

If you are on an Apple Mac I would recommend Osmond PCB. This has now been made donation ware, free if you don't care to pay. It can add fillets, ie curves, to corners. When two traces are joined at a highly acute angle it is possible that the etching solution used to remove copper from the blank bo...
by whoop_john
Sat Jan 12, 2019 2:53 am
Forum: Music Tech DIY
Topic: Osmond PCB for Mac is now free
Replies: 3
Views: 422

Osmond PCB for Mac is now free

Osmond PCB for Mac is now free. Previous free versions were limited to 700 pads. Starting today, 12th Jan 2019, Osmond version 1.1.39 (32 bit) and version 1.2.6 (64 bit) are now free. All restrictions have been removed and no license is required. However, donations are accepted. If you have a Mac an...
by whoop_john
Fri Jan 04, 2019 8:47 am
Forum: Music Tech DIY
Topic: Decade boxes
Replies: 18
Views: 991

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I just bought one of these on Aliexpress at very modest cost inc delivery. Search for Seven Decade Programmable Resistor and a bunch come up.

1R - 9999999R in steps of 1R using 1% 1/2 Watt resistors.
by whoop_john
Mon Dec 24, 2018 5:42 am
Forum: Music Tech DIY
Topic: At last, I finished building my prototype!
Replies: 7
Views: 505

Great fun, I enjoyed that, thanks.

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