GrantB's post says it all. The iso loosens the flux but you still need to get it off of the pcb with a paper towel, etc. Occasionally I do small boards with only 60/40 rosin flux solder. To clean those I: Find a shallow plastic lid (chinese takeout container) Place pcb in the middle and fill with is...

Great explanations and post!!!
Fascinating variety of functions on that module.

I'm ordering pcbs I designed for this MIDI MUC device to build in MU format. Buy a kit from ebay or elsewhere and you can use the pcbs (two of them) to build in MU. Panel pcb so wiring is fairly minimal. Am hoping to sell five or six pcb sets from my small run of ten. This is for a custom order so I...

Yeah, you can tap the output either from the FFB output or from the mixer output. I don't think it matters too much which one you choose. I didn't even use a multiple, just a Y-splitter like this one: I was just wondering if it is possible to modify the dotcom ffb to integrate the feedback path int...

For that project (most others, too) you do not need any special part number. Play fast and loose with the letters. It is a 10V regulator. It's footprint is TO-220 (listed as TO-220-3). Just search "7810" and look under semiconductors. Plenty to chose from: https://www.mouser.com/Semiconductors/Power...

True beauty!
Very inspiring.

Flareless wrote:

Schlumpfhut wrote:One can always go down on DIY lane to reduce costs

I think this is the #1 misconception about DIY

The BOM for that lists raw parts cost as $300+.
It's a special thing so not terrible.

There is also a low cost, less precise version using two LM339.
They have an OSH Park pcb file to use for that one, too.

Thanks for posting this. Enjoying the read.

Thank you for that link!
Only gotten thru the first 30 pages and already there is so much cool stuff and ideas.
Also, a couple things on RTD resistors.

lemberski wrote:Here how Jim Williams used the LM311 (p.10 from this pdf: http://www.introni.it/pdf/Williams%2003 ... %20EDN.pdf):

Check out the Modulation source module. Cool LFO and it is different than the typical synth LFOs I have seen.

Bourns and BI Tech/TTE currently make center tapped pots. Both are legit companies with good reputations. Contact BI Tech if you need to special order. Their min quantities are usually low (maybe a couple hundred), inexpensive, and better quality than most (conductive plastic, 100,000 rotations rati...

They are pot based and are great for synth use. I don't recall the connector name they mate with but that should be easy to google. They also have a second push button on the back. As stated already, the stick is spring loaded or free moving selected via bottom switches, one per axis. Good price for...

elmerfudd wrote:Killer,killer module, great build, sonic bliss. Phill has made a couple of these in Modcan A format for me. Couple of my favorite modules.

Those are my favorite A Series panels.
I started putting together a cab for that format because of it.

Kudos for an outstanding panelling! It must have been a lot of fun to wire. Well done. Thanks! The wiring is time consuming but not bad, really. Everything is connected to the pcb via MTA100 connects so I didn't have to do much soldering in the congestion. Here's another pic of the back. https://ww...

looks lovely phil.. :) does the VCA add colour..? and how does the bias effect it all..? If I'm reading the panel correctly, the bias knob acts as a crossfader between the envelope signal and a constant (probably +5V) voltage, so that when the knob is fully counterclockwise the VCA is only affected...

Built this recently for a custom job. Wasn't sure how or if it would work in a single MU space. I was apprehensive the controls would be too cramped. It actually worked well and all controls are easy to use. Will be building one for myself now. Was thinking there may be a person or two on MW who wou...

Still have the one CdS left.
That is the last pcb and last panel.
Same with the LFO modules.
I do not plan to restock these.

tardishead wrote:

modmax69 wrote:Love to see this filter in 5U:

Frequency Central Raging Bull 3.0

Raging Bull 3.0

mmmmmmmmmm
ask Rick at FC. I think you might have a pleasant surprise

Oops!
I sent my message too late.

But it looks like at least one person's wish will come to be.
Good work.

Love to see this filter in 5U: Frequency Central Raging Bull 3.0 Raging Bull 3.0 That is also a DIY pcb kit so you could have that in your system as an MU module now (more like a month or so). I'm estimating it will come to $300-$350. Get in touch if you want this done. PM or email me direct: phil[...

Quick update that I should have posted long ago.
These are in stock. I have nearly 100 now.
Contact me if interested.
Here or my email
phil[at]megaohmaudio.com

I have built several Yusynth VCAs for both my 5U and Eurorack modulars. Within the last few years I built a Veils from Mutable and have never looked back. I enjoy the sound quality much more and love that you can adjust the lin/expo response. I miss the second input for the VCAs but you will figure...

I am about to expand my modular system with extra VCA's. Until today I only biult Yusynth AC and DC versions. Are there better sounding ones out there I should considderin my audio chain? Shameless plug but, This one has lower CV feedthrough and is cleaner: https://www.muffwiggler.com/forum/viewtop...

guest wrote:although that is not log, it implements the function x^n, where n is the blend setting. so if n = 1, you get linear, and for other values you get square, cube, etc.

x^n

What does the symbol between x and n stand for?
Is it power of?

First thought was this is a great refit job...
but it is not a refit. It's original.
Wow!
Really impressed with all that hardware and software work.

devinw1 wrote:Thanks for sharing that elby document mungo!.

Is it just me or are most of the diagrams in the pdf blurry and unreadable?