Search found 2730 matches

by flts
Sat Jan 05, 2019 5:18 am
Forum: Music Tech DIY
Topic: DIY earth question
Replies: 18
Views: 524

If you download the documentation package from the survival site and look closely at GRIDS-CORE-PCB.JPB you can see faint "SW" and "HOT" markings for all jacks, even those that don't have the sleeve pin "ear" in the silkscreen. That's how you can decipher the orientation of the remaining jacks. If t...
by flts
Fri Jan 04, 2019 2:28 pm
Forum: Music Tech DIY
Topic: o_C or teensy problem - SOLVED
Replies: 6
Views: 810

^- Great! Sometimes the actual solution is the simplest one :hihi:
by flts
Fri Jan 04, 2019 8:46 am
Forum: Music Tech DIY
Topic: o_C or teensy problem - SOLVED
Replies: 6
Views: 810

https://www.pjrc.com/teensy/loader_mac.html So you 1) see the "Press Button on Teensy to manually enter Program Mode", 2) have the Teensy powered on, either via USB or the case +-12V power, depending on whether the trace was cut in Teensy (if the USB power trace is cut on the Teensy board by the bu...
by flts
Fri Jan 04, 2019 3:26 am
Forum: Eurorack Modules
Topic: HSTA Baby 8 sequencer. Disable and Carry!?
Replies: 3
Views: 335

The "disable" and "carry" are named such, as they correspond to the pins in the integrated circuit that Baby 8/10 sequencers are built around (CD4017 or CD4022). "Disable" is also called "clock inhibit". It simply means that clock input is ignored while the input is high. So you can eg. hold a stage...
by flts
Fri Jan 04, 2019 3:23 am
Forum: Music Tech DIY
Topic: getting started with STM32 development
Replies: 25
Views: 1311

I always leave one UART TX pin free, so I can printf debug my way out of any trouble :) in fact TX is one of the pins of my 2x3pin debug header... Yeah, there are still obvious uses for actual running-under-debugger-with-breakpoints but printf will get your way out of most of trouble :hihi: I suppo...
by flts
Fri Jan 04, 2019 2:23 am
Forum: Music Tech DIY
Topic: Project PRO2021 - A Pro-One keyboard synth
Replies: 1244
Views: 56363

FWIW, the Japanese "Engineer" brand crimping tools work like a champ and appear to make reliable crimps with most Molex, JST and other of sufficiently small size pins. I can't speak for MiniFit, but that might be one potential option between manual crimping & soldering and expensive official tool. E...
by flts
Thu Jan 03, 2019 7:00 am
Forum: Music Tech DIY
Topic: getting started with STM32 development
Replies: 25
Views: 1311

now I'm trying to understand how am I suppose to program the chip, I have ST-Link V2, so should I use JTAG (basically copying the pinout from Mutable Instruments boards) or there are some other ways? JTAG or SWD, both can be used for firmware upload & debugging with ST-Link and STM32 MCUs. They req...
by flts
Wed Jan 02, 2019 10:15 am
Forum: Music Software
Topic: Greentea Looper Construction Kit for Kyma X Needed!!
Replies: 12
Views: 1380

Probably an obvious one, but as you didn't mention - did you get in touch with Symbolic Sound via e-mail and ask about whether they have any contact information for Green Tea Software guy or something else they could informally help with regarding the problem? It's a small company and at least my ex...
by flts
Wed Jan 02, 2019 9:51 am
Forum: Music Tech DIY
Topic: uT_u 8HP micro Temps Utile build
Replies: 29
Views: 2391

Did you use the 4.22k in the end? Did it work fine? I don't have the schematic, but a standard 4.2k 1% tolerance resistor can have actual resistance from roughly 4.16k to 4.24k. Using a 4.22k (at +-1% tolerance roughly 4.18 to 4.26k) in its place should be perfectly fine. If the spot in the schemat...
by flts
Wed Jan 02, 2019 8:39 am
Forum: Music Tech DIY
Topic: Mutable Module Tester
Replies: 59
Views: 4766

Breve Tufvassons and Mascot produce suitable AC-AC adapters in EU at least - the last one I bought from was from TME I think (from the first manufacturer, needed to buy a separate transformer and "connector set" for it). FWIW, if you happen to have standard thrift store / surplus electronics stores ...
by flts
Wed Jan 02, 2019 6:05 am
Forum: Music Tech DIY
Topic: Pure sequencer code error [SOLVED]
Replies: 5
Views: 393

Cool! Glad that one was a working solution, even though not exactly as easy as just changing the target board...
by flts
Tue Jan 01, 2019 1:03 pm
Forum: Music Tech DIY
Topic: Pure sequencer code error [SOLVED]
Replies: 5
Views: 393

Can you post the whole code file / tell us more of how you are trying to compile or flash it? It usually helps a lot with troubleshooting to get some context aside the error message. FWIW, PORTBemulation hints at Teensy's AVR emulation headers / libraries, whereas I assume you are trying to compile ...
by flts
Sun Dec 30, 2018 4:59 am
Forum: Music Tech DIY
Topic: getting started with STM32 development
Replies: 25
Views: 1311

Taste or priorities, if there's even a difference? Yep, I guess "priorities" is usually the more correct form when talking about commercial side of things / getting things done in given time and budget... (Or is it) There are also companies that are leaving the C-based development behind (...) With...
by flts
Sat Dec 29, 2018 2:29 pm
Forum: Music Tech DIY
Topic: getting started with STM32 development
Replies: 25
Views: 1311

I think pld and gbiz put it better than I could, but I'll just echo / share my experience. I think the main answer is "it depends" as well - what your experience of programming in general, embedded hardware, etc. is kind of dictates on what you might want to start with. As an example, I just did a s...
by flts
Thu Dec 27, 2018 2:05 am
Forum: Music Tech DIY
Topic: DIY Mutable Unsuccessful Builds
Replies: 3081
Views: 166182

The dev environment might have too old a version of Mutable stmlib preinstalled. As far as I can see, that particular function / template that plaits is expecting to be available was added to stmlib on January 2018: https://github.com/pichenettes/stmlib/commit/c55c7dfe35937d3bd550115d9b9301d89f42111...
by flts
Wed Dec 26, 2018 11:55 am
Forum: Eurorack Modules
Topic: so what is "Eurorack" and when did it start?
Replies: 39
Views: 1844

TL;DR: Eurocard mechanical standard is what several European manufacturers have adopted for their modular systems, most probably because of the widespread availability, being used everything from lab gear to process automation hardware. Eurocard is an actual industrial standard (or actually, several...
by flts
Wed Dec 26, 2018 11:47 am
Forum: Eurorack Modules
Topic: so what is "Eurorack" and when did it start?
Replies: 39
Views: 1844

This is one of the things where opening Wikipedia actually produces satisfactory, if not completely error-free answers. The forum software doesn't like the links and hides my whole message if I try adding them, but go to Wikipedia and open "Eurocard" and "Eurorack" articles. 1) The original industry...
by flts
Fri Dec 21, 2018 7:21 am
Forum: Music Tech DIY
Topic: What circuits benefit the most from having “character”?
Replies: 17
Views: 1175

Re: What circuits benefit the most from having “character”?

The Buchla random voltage generators such as the Source of Uncertainty or the 208's random (actually pseudo random) are not S&H. Oh yeah, I didn't think that Revok might have misunderstood what a S&H is. But the other side of the story, as I mentioned before, is that Source of Uncertainty DOES have...
by flts
Fri Dec 21, 2018 5:51 am
Forum: Music Tech DIY
Topic: What circuits benefit the most from having “character”?
Replies: 17
Views: 1175

The only circuits I'd say dont have character are Logic, whether it's made from diode-resistor, diode–transistor or transistor–transistor logic. Design a vacuum tube logic module, especially with a vacuum tube flipflop, and plenty of people would build it. It'd have that aesthetic character 8-) Peo...
by flts
Fri Dec 21, 2018 4:19 am
Forum: General Gear
Topic: MIDI Channelizer (do they still exist)? YES THEY DO!!!
Replies: 24
Views: 1020

Out of the ones acidbob posted, "Midibro" is of the same MidiPal lineage (I was still writing my post when that was posted)
by flts
Fri Dec 21, 2018 4:18 am
Forum: General Gear
Topic: MIDI Channelizer (do they still exist)? YES THEY DO!!!
Replies: 24
Views: 1020

https://midisizer.com/midigal/ in Dispatcher mode / firmware would probably do what you want. As a bonus, there's the "have fun and save some money" mode, eg. it's primarily a DIY project, but you can order it prebuilt if you just need something that works now. (It's inspired by / developed from Mu...
by flts
Fri Dec 21, 2018 2:08 am
Forum: Music Tech DIY
Topic: What circuits benefit the most from having “character”?
Replies: 17
Views: 1175

This isn't meant to be sarcasm, but it's perhaps an understatement to call SSG or SoU "sample or hold circuits". Yes, that's one part of what they do, but I think the reason why they're liked so much would rather be the whole interplay between the different parts, of which sample and hold is one. Bu...
by flts
Thu Dec 20, 2018 4:09 pm
Forum: Music Tech DIY
Topic: Very Important: READ THIS PLS
Replies: 15
Views: 1517

And folks, if you really need to discuss off topic issues, take it to the original thread, not here, ok? Yup, fair enough! I felt the original thread was being pretty nasty, and thus decided to voice my concern here instead of that one - but only now realized I was reading the "echo" in the Eurorac...
by flts
Thu Dec 20, 2018 9:05 am
Forum: Music Tech DIY
Topic: Very Important: READ THIS PLS
Replies: 15
Views: 1517

Ditto. At the point of having gladly donated around $500 during the past 10 years to keep the forum running, I'm more and more worried both about the future availability of current data as a repository of knowledge (there's a FRIGGIN BOATLOAD of very useful to irreplaceable DIY knowledge stored on t...
by flts
Thu Dec 20, 2018 8:38 am
Forum: Eurorack Modules
Topic: VERY IMPORTANT
Replies: 107
Views: 4728

FWIW if you read Mike's original post that is linked in the fundraiser topic, it says "I have found a way to cut some expenses and bring the hosting costs down by a few hundred dollars a month, but first we need to settle our overdue account". Because the discussion in this thread seems to revolve (...

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