Search found 177 matches

by Morphology
Wed Jul 01, 2020 7:32 am
Forum: Eurorack Modules
Topic: Busboard Recommendations Please
Replies: 22
Views: 786

Re: Busboard Recommendations Please

Have a look at Clicks and Clocks I bought 2 x PSU and 5 x Busboards and have been very happy with them. They are self-build. Only very simple soldering skills required, though you need a reasonably high-wattage iron as the earth planes conduct a lot of heat away. Shrouded headers. They have Single-s...
by Morphology
Wed Jun 10, 2020 11:46 am
Forum: Eurorack Modules
Topic: HELP! with DIY case
Replies: 6
Views: 362

Re: HELP! with DIY case

+1 for https://clicksclocks.de/

Stefan is super helpful, good prices and good delivery - I have built several of his Eurorack PSU and distribution boards.
by Morphology
Wed Jan 30, 2019 5:13 pm
Forum: Music Tech DIY
Topic: DIY Clap'a'Trap ** Assembly Results & Trigger Update ***
Replies: 168
Views: 14469

Boogie wrote:Anyone more results or questions ?
I'm sure I read this in the build thread, but just to confirm: C19 & C20 at the top edge of the board are not needed (and not in the BOM)?
by Morphology
Wed Jan 09, 2019 3:30 am
Forum: Music Tech DIY
Topic: Plague Bearer DIY v2.0
Replies: 28
Views: 3249

I assume you've no shorts between the power rails & ground, or you'd probably have smoked your power supply? So, next thing to check is that you've got power to the main part of board - with a multimeter check between Ground (any of the centre 6 pins of the power header) and the top then bottom end ...
by Morphology
Tue Jan 08, 2019 3:52 am
Forum: Music Tech DIY
Topic: CAD software?
Replies: 36
Views: 2581

@Jordanb is referring to Rhinoceros 3D https://www.rhino3d.com/6 We use it at work, where the licensing model via a Zoo server works really well for us, and it's a great 3D modelling tool. The Price tag may put most DIY-ers off, though. For home use I find the KiCad / freeCAD works well for me, thou...
by Morphology
Tue Jan 08, 2019 3:28 am
Forum: Eurorack Modules
Topic: Behringer Adat handle Euro levels?
Replies: 3
Views: 376

I've an ADA8000 (the older model), which I use to pipe Euro into my Desktop via an RME Hammerfall.

Had no issues with it, though I do tend to run the signals via Active DIs - more out of habit than anything.

Morph
by Morphology
Tue Jan 01, 2019 2:33 pm
Forum: Music Tech DIY
Topic: Euro power from 15v supply?
Replies: 9
Views: 847

Just buy a uZeus?
by Morphology
Wed Dec 19, 2018 9:40 am
Forum: Music Tech DIY
Topic: Does anybody know a source for these slider pots
Replies: 6
Views: 826

Thanks for the replies. @Radium, I'd looked at those Bournes ones, the pinouts looked OK, but the lever is completely wrong (and metal, so it's tricky to alter). What I ended up doing was ordering these from AliExpress ($9.90 for two!): https://www.aliexpress.com/item/1pcs-45mm-straight-sliding-pote...
by Morphology
Wed Dec 19, 2018 9:08 am
Forum: Music Tech DIY
Topic: Replacing soldered-in batteries
Replies: 18
Views: 1358

I did a similar replacement recently on a Generalmusic GEM S3 Turbo - couldn't source a coin-cell with the same pin spacing, so I soldered in a holder instead. By holding the PCB up to a strong light source, it was easy to tell it was just a dual-sided PCB, so it was a simple matter to find a couple...
by Morphology
Fri Nov 30, 2018 10:22 am
Forum: Music Tech DIY
Topic: Knas Ekdahl Quad Massager 12VAC Power Supply
Replies: 8
Views: 673

well, looking on the Knas Music web site, the power supply for the Quad Massager is actually: 12VAC, 500mA with a 2.1mm plug: http://www.knasmusic.com/products/quadmassager/faq.php So something that's compatible is cheap and easy to find in Europe: https://www.ebay.co.uk/itm/12V-Universal-Power-Supp...
by Morphology
Fri Nov 30, 2018 9:01 am
Forum: Music Tech DIY
Topic: Knas Ekdahl Quad Massager 12VAC Power Supply
Replies: 8
Views: 673

How about a 220/240v to 120v Step-down transformer, to step down the mains side of your existing supply: Loads of cheap and cheerful ones: https://www.amazon.co.uk/Step-down-voltage-converter-240V/dp/B001E5OSF8 Or if you need more power https://www.amazon.co.uk/240v-110v-Step-Down-Transformer/dp/B00...
by Morphology
Mon Nov 26, 2018 9:29 am
Forum: Music Tech DIY
Topic: Pcb spacers and holders, absolutely neccesary?
Replies: 17
Views: 926

I have designed several boards that have two sets of 8-pin headers linking the boards together.

Once the module is built, if it's all working as expected, then a small dab of superglue on each header ensures they won't accidentally pull apart.

Morph
by Morphology
Mon Nov 26, 2018 9:23 am
Forum: Music Tech DIY
Topic: What is this dot on the op amp symbol?
Replies: 4
Views: 473

That's a common representation of an inverting input (or output) when representing logic gates Nand, Nor etc., not seen it used on an Op Amp, but would assume it to be the Inverting input.

Morph
by Morphology
Mon Oct 22, 2018 4:23 pm
Forum: Music Tech DIY
Topic: Does anybody know a source for these slider pots
Replies: 6
Views: 826

Does anybody know a source for these slider pots

I'm currently repairing a GEM S3 workstation Synth, and the output Volume slider is faulty. The body is 45mm x 8mm and the slider has 30mm of travel. It's a linear taper. The schematic says it should be 10k, but I've also got a GEM S2 (which has an identical control surface), and it's volume slider ...
by Morphology
Tue Sep 25, 2018 2:17 am
Forum: Music Tech DIY
Topic: JYE DSO 138 DIY KIT port to euro?
Replies: 15
Views: 1849

Well, apart from the lack of a through connection, that looks perfect, ordered!

Morph
by Morphology
Sat Sep 22, 2018 10:31 am
Forum: Music Tech DIY
Topic: JYE DSO 138 DIY KIT port to euro?
Replies: 15
Views: 1849

I've not progressed any further with it, though it is still on my to-do list, as I'd like to be able to mount one of the scopes in my rack too. Maybe your question is the kick-in-the-ass I need to get something designed. My vague plan was to make the panel as a PCB, which I've done for other Eurorac...
by Morphology
Wed Sep 19, 2018 6:57 am
Forum: Music Tech DIY
Topic: [PCB/panel] Distance sensor to CV.
Replies: 1
Views: 218

I did something very similar using the VL6180 Time of Flight controller. Details & vids in this thread:

viewtopic.php?t=176769

Vids on Vimeo here:

https://vimeo.com/audiomorpology

Morph
by Morphology
Mon Sep 10, 2018 7:47 am
Forum: Modular Synth General Discussion
Topic: Tell me about your brush with academia
Replies: 75
Views: 3984

I did my first degree in Electronics at the University of Kent at Canterbury (UK). Over the summer before heading off to Uni (1978), I built the Tim Orr / Powertran-designed Transcendent 2000 synth which was covered in detail and sold as a kit via Electronics Today International (ETI) magazine. Alth...
by Morphology
Fri Sep 07, 2018 2:07 am
Forum: Eurorack Modules
Topic: Portable Power
Replies: 5
Views: 719

I often run a small modular rig in my RV from the 12 leisure batteries, feeding the 12v direct into the DC input of a uZeus. Provided the Leisure Batteries are fully charged, they'll power the uZeus for several hours. Fully charged the leisure batteries will be putting out over 13.5v this drops over...
by Morphology
Fri Jun 29, 2018 2:02 am
Forum: Eurorack Modules
Topic: Testing a uZeus and Modules for failures
Replies: 9
Views: 470

Well yes. Unplug everything from the uZeus flying bus cables. https://www.muffwiggler.com/forum/userpix2/30407_24866002784_d94c19bd12_c_1.jpg With your multimeter set on a 20v DC range. Looking at the Flying bus sockets, the 2 pins (one pair) closest to the red stripe are -12v, then next 6 pins (3 p...
by Morphology
Wed Jun 27, 2018 5:46 am
Forum: Music Tech DIY
Topic: Power Circuit Design
Replies: 3
Views: 619

If you're referring to Olivier's way of drawing Circuit diagrams, then there's often a row of caps shown as being between the power rail & ground. This is simply for expediency - the reality is that these are decoupling caps that are placed physically close to other components (ICs mainly). He'll al...
by Morphology
Wed Jun 27, 2018 4:58 am
Forum: Music Tech DIY
Topic: Sending precise voltage
Replies: 9
Views: 860

I built one of (the great, and sadly missed) Ray Wilson's "In a Pinch" voltage generator see here - about half-way down this page in the section headed Voltage Controlled Oscillator Adjustment : http://musicfromouterspace.com/analogsynth_new/VCO200604REV01/VCO200604REV01.html I just built it on some...
by Morphology
Wed Jun 13, 2018 8:56 am
Forum: Music Tech DIY
Topic: Erica Synths DIY Polivoks Oscillator II
Replies: 4
Views: 438

No it doesn't have to, but the fact that it hasn't on quite a few of the components on those photos may be indicative that the joint didn't get hot enough or was insufficiently 'wetted'. It's only a suggestion and, if it was me then I, personally, would be re-flowing many of those solder joints. If ...
by Morphology
Wed Jun 13, 2018 7:21 am
Forum: Music Tech DIY
Topic: Erica Synths DIY Polivoks Oscillator II
Replies: 4
Views: 438

I would re-flow the solder on a lot of those components - for many of them, the solder hasn't flowed through from the bottom to the top surface, so if the through-plated holes aren't perfect, the component may not be contacting the upper surface correctly? There are a lot of poor-looking solder join...
by Morphology
Sat Jun 09, 2018 8:04 am
Forum: Music Tech DIY
Topic: Dreadbox Erebus DIY kit
Replies: 232
Views: 24441

Question on modding the Lil Erebus - to be less of a semi modular and fit in more neatly with the rest of my modules it would be good if either GATE or ENV was normalled to always be high when nothing's plugged in. This way it's easier to run an input through the Lil Erebus as an effects module wit...

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