Search found 524 matches

by Bartimaeus
Wed Aug 05, 2020 11:00 pm
Forum: Music Tech DIY
Topic: "Component Kits" - BOMs or other packages for ICs/Caps/etc?
Replies: 3
Views: 104

Re: "Component Kits" - BOMs or other packages for ICs/Caps/etc?

https://smallbear-electronics.mybigcomm ... ts-kits-1/

but in general, you're usually better off researching the most common values, then making a big order from tayda or mouser.
by Bartimaeus
Thu Jul 30, 2020 1:26 pm
Forum: Guitars, Basses, Amps & FX
Topic: Cheap Ass Pedals
Replies: 28
Views: 2125

Re: Cheap Ass Pedals

you find a ton of old dod and arion pedals floating around really cheap. one of those old dod filter pedals could be a lot of fun. or their old delay/sampler pedals, which were some of the first digital delay pedals.
by Bartimaeus
Thu Jul 30, 2020 1:19 pm
Forum: Guitars, Basses, Amps & FX
Topic: Vocal Stutter Pedal?
Replies: 11
Views: 926

Re: Vocal Stutter Pedal?

tkog mini glitch has a momentary mode and should work for vocals. the delay length can be random too, which is unusual
by Bartimaeus
Wed Jul 29, 2020 4:35 pm
Forum: Music Tech DIY
Topic: Anyone built a Music Thing Reverb MK2 using Xvive VTL5C3 vactrols?
Replies: 16
Views: 380

Re: Anyone built a Music Thing Reverb MK2 using Xvive VTL5C3 vactrols?

just rub some isopropyl on the boards after you swap the components, it'll look nice and clean
by Bartimaeus
Tue Jul 21, 2020 5:39 pm
Forum: Music Tech DIY
Topic: Trimmer Pot Knob size?
Replies: 10
Views: 463

Re: Trimmer Pot Knob size?

davies 1900 with the screw fit fine, but maybe those are too large for your purposes?
by Bartimaeus
Wed Jul 15, 2020 11:29 pm
Forum: Music Tech DIY
Topic: No love for the Axoloti DSP Board?
Replies: 182
Views: 23640

Re: No love for the Axoloti DSP Board?

forrest wrote:
Wed Jul 15, 2020 9:21 pm
Pretty excited about this as well, gonna get a 4hp panel made up soon as mine arrives and start messing around.. Maybe an 8hp version with some pots & a slider.
actually, if you or someone else could make a design for an 8hp panel with pots available that'd be even cooler than a control board!
by Bartimaeus
Wed Jul 15, 2020 1:32 pm
Forum: Music Tech DIY
Topic: No love for the Axoloti DSP Board?
Replies: 182
Views: 23640

Re: No love for the Axoloti DSP Board?

are there any control boards for akso, like there are for axoloti?
by Bartimaeus
Mon Jul 13, 2020 5:02 pm
Forum: Music Tech DIY
Topic: Reverse engineering schematics
Replies: 12
Views: 434

Re: Reverse engineering schematics

only a silly question because you asked for the "easy" way. it's totally doable but it takes a lot of time.
by Bartimaeus
Mon Jul 13, 2020 5:00 pm
Forum: Music Tech DIY
Topic: 0805 and 0605, learning SMD in 2020
Replies: 18
Views: 391

Re: 0805 and 0605, learning SMD in 2020

surely a reflow oven is total overkill if you're starting out? i guess the exception is if you use one of those electric skillets from a big box store. but even then you'll almost certainly want paste and stencils, which again aren't particularly friendly to a beginner doing one-off boards. and for ...
by Bartimaeus
Mon Jul 13, 2020 1:31 am
Forum: Music Tech DIY
Topic: Jacks on diy eurorack case
Replies: 9
Views: 222

Re: Jacks on diy eurorack case

short answer: yes, and it's not especially difficult. but you need to know the specifics of the modules that you want the jacks to connect to.

also, it's not difficult to add a transformer to an existing output design so long as space isn't a concern. and when it is a concern there's the 42TM019-RC
by Bartimaeus
Mon Jul 13, 2020 1:20 am
Forum: Music Tech DIY
Topic: 0805 and 0605, learning SMD in 2020
Replies: 18
Views: 391

Re: 0805 and 0605, learning SMD in 2020

a hot air gun is absolutely essential. sometimes you mess up when soldering an ic, and it's a nightmare to remove with an iron compared to the ease of hot air. plus it opens you up to the option of using paste, which can make ics even easier (though drag soldering with an iron can be quick once you ...
by Bartimaeus
Fri Jul 10, 2020 1:00 am
Forum: Guitars, Basses, Amps & FX
Topic: any cool solid state guitar amps?
Replies: 72
Views: 8489

Re: any cool solid state guitar amps?

not sure if it's small enough for you, but the fender eighty-five and other solid-state red knob fenders are a solid option. the distortion channel is useless, but the clean channel is pristine and sounds great with distortion pedals. that's the key to jonny's greenwood's 90s dirt sound after all.
by Bartimaeus
Fri Jul 10, 2020 12:25 am
Forum: Music Tech DIY
Topic: how to protect 5v gate in for microcontroller? [figured out]
Replies: 15
Views: 370

Re: how to protect 5v gate in for microcontroller?

marbles.png
some mutable clock inputs. similar to what i posted above but with npn transistors, a 100k input resistor, and a 1N4148 diode. the input resistor will avoid impedance issues and the 1N4148 clips negative voltages. neither of those are strictly necessary but they certainly don't hurt.
by Bartimaeus
Thu Jul 09, 2020 1:37 pm
Forum: Music Tech DIY
Topic: how to protect 5v gate in for microcontroller? [figured out]
Replies: 15
Views: 370

Re: how to protect 5v gate in for microcontroller?

You can just use a 5.1V zener diode. But a better option is to use a transistor as ersatzplanet explains. You can even just use a PNP transistor and a couple resistors. input.png Just follow this and connect the base to your CV and the emitter to your microcontroller's input. EDIT: you should also s...
by Bartimaeus
Mon Jun 29, 2020 1:15 am
Forum: Music Tech DIY
Topic: Gunk all over Minibrute PCB + non-oscillating LFO
Replies: 8
Views: 238

Re: Gunk all over Minibrute PCB + non-oscillating LFO

i agree that it looks like no-clean flux on the tht parts, so nothing to worry about. you can check an lfo with a multimeter by finding the right pins and seeing if there's a cycling voltage in the correct range. checking for continuity is also a good call, especially since the led suggests that at ...
by Bartimaeus
Sun Jun 28, 2020 11:33 am
Forum: Music Tech DIY
Topic: Gunk all over Minibrute PCB + non-oscillating LFO
Replies: 8
Views: 238

Re: Gunk all over Minibrute PCB + non-oscillating LFO

please post photos, it's pretty hard to say what the crud is on your board without seeing it.

have you tried probing the lfo section to see if you can get the correct waveform at any point? from what you've said, it's hard to say if the lfo isn't working, or if the lfo isn't reaching its destination.
by Bartimaeus
Sun Jun 28, 2020 11:30 am
Forum: Eurorack Modules
Topic: Picking out my third sequencer.
Replies: 30
Views: 1048

Re: Picking out my third sequencer.

why not circadian rhythms, if you need to add better gate capabilities? it should pair well with the z8000.
by Bartimaeus
Fri Jun 26, 2020 11:19 am
Forum: Music Tech DIY
Topic: Building up components inventory - how to do DIY without always buying full kits???
Replies: 24
Views: 824

Re: Building up components inventory - how to do DIY without always buying full kits???

For building an inventory of passives I'd recommend Tayda over eBay. I buy a fair amount from eBay these days, but it took a lot of buying to know what was a ripoff and what was good. With Tayda, you know almost everything will be at least solid. Plus some makers (like frequency central) include a T...
by Bartimaeus
Tue Jun 23, 2020 12:10 pm
Forum: Music Tech DIY
Topic: uO_c 8hp ornament and crime.
Replies: 317
Views: 42141

Re: uO_c 8hp ornament and crime.

anyone in the usa got a spare pcb/panel set?
by Bartimaeus
Sun Jun 21, 2020 1:01 pm
Forum: Music Tech DIY
Topic: Building up components inventory - how to do DIY without always buying full kits???
Replies: 24
Views: 824

Re: Building up components inventory - how to do DIY without always buying full kits???

as others have said, every time i build a module, i buy extra of each component. if it's passives like resistors, i'll buy between 30 and 100 of that value (still less than a dollar). i use tayda for passives which makes it even easier and cheaper. for ICs maybe i'll buy 10 if i only need 1 or 2 for...
by Bartimaeus
Wed Jun 17, 2020 12:34 am
Forum: Music Tech DIY
Topic: Fixing a Korg Poly-61
Replies: 15
Views: 402

Re: Fixing a Korg Poly-61

have you tried probing voice 2 to see where the signal disappears just by listening, and if the pitch and other parameters are changing as you'd expect?

might be worth buying getting an oscilloscope – tons of old ones on ebay for not much money
by Bartimaeus
Sun Jun 14, 2020 2:33 pm
Forum: Music Tech DIY
Topic: Cvp jacks question
Replies: 1
Views: 92

Re: Cvp jacks question

just make sure the right pins on each jack are connected to the right places, how you connect isn't really imporant. it's a convenient technique to connect all the grounds together with a component lead, but you can also just wire them together. check the datasheet for the 16pj138, see which pins ar...
by Bartimaeus
Tue Jun 09, 2020 11:25 am
Forum: Music Tech DIY
Topic: Audio / CV mute circuit
Replies: 8
Views: 368

Re: Audio / CV mute circuit

it's not always this simple, but sometimes you can just throw in a coupling capacitor and it'll smooth out the dc enough to stop the clicks
by Bartimaeus
Mon Jun 08, 2020 11:48 am
Forum: Eurorack Modules
Topic: Favorite 4HP envelope generator?
Replies: 25
Views: 724

Re: Favorite 4HP envelope generator?

autopoiesis wrote:
Mon Jun 08, 2020 11:42 am
vasculator wrote:
Mon Jun 08, 2020 10:26 am
frequency central system x envelope for me. really does the trick shape-wise and they are super easy/cheap to DIY.
agreed here
+1

their CEMvelope is nice too, but the curve of the system x envelope sounds especially nice to me
by Bartimaeus
Thu May 28, 2020 11:10 pm
Forum: Eurorack Modules
Topic: Where do I go from here?
Replies: 10
Views: 230

Re: Where do I go from here?

you should really be answering that question yourself. learn your system, and only add stuff if you find flaws. it's already massive and very capable.

if you must add i would recommend something to take better advantage of the many power players you already have. stuff like the manhattan analog cvp.

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