Search found 751 matches

by Stinktier86
Sat Nov 21, 2015 4:24 am
Forum: Music Tech DIY
Topic: convert digital low to positive analog trig?
Replies: 3
Views: 200

convert digital low to positive analog trig?

Hey all! So i've been building kits, made a few stripboard modules and some mods to doepfer modules for a couple of years now. Now i want to try something outside my comfort range. I got this nfc/rfid reader and there's a digital pin that pulls low as an interrupt when a card/tag is in range. i want...
by Stinktier86
Mon Feb 16, 2015 7:54 pm
Forum: Music Tech DIY
Topic: capacitor types and filter behavior
Replies: 11
Views: 1495

by Stinktier86
Mon Feb 16, 2015 1:45 pm
Forum: Music Tech DIY
Topic: capacitor types and filter behavior
Replies: 11
Views: 1495

group delays - never ever heard about that. :oops: To the op: And yes, as for diode clipping, there's a lot to experiment with. Filters like the a-106-1 x-tremefilter (which is 'inspired by' ms-20 but sounds different altogether) lets you control the (mis)matching of the two opposite diodes by mean...
by Stinktier86
Mon Feb 16, 2015 4:23 am
Forum: Music Tech DIY
Topic: capacitor types and filter behavior
Replies: 11
Views: 1495

If you have a filter you're willing to experiment with, identify the timing capacitor/s. Changing its dielectric property may change the character of the resonant 'hump' right before the cutoff. Be sure to get the same capacitance value, and also some dielectrics show poor stability behaviour over h...
by Stinktier86
Wed Feb 11, 2015 7:22 am
Forum: Music Tech DIY
Topic: [Interest check] Matched transistor pair ICs
Replies: 43
Views: 2558

I'd order 10 or possibly more.
by Stinktier86
Wed Feb 11, 2015 4:25 am
Forum: Music Tech DIY
Topic: [IN STOCK] Eurorack: Discrete State-Variable VCF v1.4
Replies: 1268
Views: 103116

Almost finished with my four. Though, i have been hesitating over the timing caps and waited popping them in. I've got a bunch of PP:s @ 2,5% tolerance but i'm almost sure i want PS (got a lot of filters with very pronounced resonance already). Then i found soviet made 1% tolerance PS caps on the ne...
by Stinktier86
Mon Feb 09, 2015 5:00 am
Forum: Music Tech DIY
Topic: what is a node (pcb)?
Replies: 3
Views: 501

Afaik node is a term interchangeable with 'junction', but is differentiated from 'point' which also may describe a, well, point relative to just one element.
by Stinktier86
Wed Feb 04, 2015 9:58 am
Forum: Music Tech DIY
Topic: Soldering with no workbench
Replies: 21
Views: 1017

I'm using a piece of cut linolium floor placed on the living room table (or stuffed away when not in use) and have a stand with crocodile clips for PCB:s, although i can't say i'm enjoying the clip thingy. a vice of some sort is surely better.
by Stinktier86
Mon Feb 02, 2015 3:29 am
Forum: Eurorack Modules
Topic: Basimilus Iteratis
Replies: 351
Views: 38600

Are you connecting the module to another module or to something external? Some modules have especially pronounced impedance problems when routed to a milieu that expects something different (such as rehearsal room/pub PA:s with built in amp/mixer sections).
by Stinktier86
Mon Feb 02, 2015 3:20 am
Forum: Eurorack Modules
Topic: E370 Quad Morphing VCO/E371 peek
Replies: 680
Views: 85322

I'm actually saving money in a piggy bank (more safe than bank accounts anyway since they seem to be directly wired to synth and electronics parts vendors) for this one. Hopefully my bank office won't stop handling cash completely by the time this beast comes out :lol:
by Stinktier86
Sun Feb 01, 2015 2:48 pm
Forum: Eurorack Modules
Topic: tl074: doepfer pimping
Replies: 145
Views: 30090

Sorry for digging this thread up, but some may be interested in its contents due to the fact that the price for LME49470 has gone down from the aforementioned 12-14 (quoted from mid-thread) to 3,90-3 EUR. Still pricey compared to your standard tl074, but might be worth in some few places. The a-119 ...
by Stinktier86
Sun Feb 01, 2015 5:06 am
Forum: Music Tech DIY
Topic: Reliability of lead-free solder/ manufacturing ROHS
Replies: 22
Views: 1440

Vactrols contain cadmium and as such they aren't allowed in products for the EU market.
by Stinktier86
Sat Jan 31, 2015 7:37 am
Forum: Eurorack Modules
Topic: Which Snare module?
Replies: 21
Views: 1662

Hej bemushroomed. Here's a local who recently put a jupiter storm in the for sale forum. PM:ing you with the link to the thread. Sorry for the advertising everyone, i thought it'd be relevant here though :hide:
by Stinktier86
Mon Jan 26, 2015 10:13 am
Forum: Music Tech DIY
Topic: [IN STOCK] Eurorack: Discrete State-Variable VCF v1.4
Replies: 1268
Views: 103116

Btw I read earlier in the thread that the LM337 has to be flipped too, but didn't see any confirmation by the designer. So what's the deal, silkscreen correct or not? edit: Works with orientation according to silkscreen i suspect it works only insofar as the voltage source is stable. A quick look a...
by Stinktier86
Mon Jan 26, 2015 10:01 am
Forum: Music Tech DIY
Topic: [IN STOCK] Eurorack: Discrete State-Variable VCF v1.4
Replies: 1268
Views: 103116

Out of curiosity (and partly, precarity if that's a word) what are the 0805 caps doing and how are they connected (in the feedback loop, perhaps?)? Just realized i mounted them without looking up dielectric properties but i think the ones i chose unknowingly should be fine. Either way i'm trying to ...
by Stinktier86
Sun Jan 25, 2015 8:34 am
Forum: Music Tech DIY
Topic: Anyone strapped a pair of 914s across a hot output jack?
Replies: 9
Views: 693

Doepfer a-106-1 xtreme filter does this with individual settings for + and - clipping. If i remeber it right, the schematic is published in the module manual or at least somewhere on doepfer's homepage.
by Stinktier86
Sat Jan 24, 2015 8:31 am
Forum: Music Tech DIY
Topic: Op amp basics
Replies: 18
Views: 1467

I did primarily mean a buffer or unity gain amp. Should've written that in the earlier post. :tu:
by Stinktier86
Sat Jan 24, 2015 5:23 am
Forum: Music Tech DIY
Topic: Op amp basics
Replies: 18
Views: 1467

If viable, i think it's good practice not to have a resistor in the feedback loop (also, be sure to make the loop as short as possible) as to not cause possible phase margin errors which can reduce performance.
by Stinktier86
Fri Jan 23, 2015 3:12 am
Forum: Music Tech DIY
Topic: [IN STOCK] Eurorack: Discrete State-Variable VCF v1.4
Replies: 1268
Views: 103116

Quick question: Do the standoffs/spacers have to be nylon? And would a m2.5 or m3 screw fit through just aswell as a 4-40? (looking at what i've already got in my drawer)
by Stinktier86
Thu Jan 22, 2015 8:08 am
Forum: Music Tech DIY
Topic: [IN STOCK] Eurorack: Discrete State-Variable VCF v1.4
Replies: 1268
Views: 103116

Seems like the new BOM got lost in the restoration process, but YAY, the thread is back from the dead! :zombie:
by Stinktier86
Wed Jan 21, 2015 7:16 am
Forum: Music Tech DIY
Topic: [IN STOCK] Eurorack: Discrete State-Variable VCF v1.4
Replies: 1268
Views: 103116

There's nothing stopping me from soldering a 5x2 pin connector for the +/-/gnd connection, right?
by Stinktier86
Wed Jan 21, 2015 7:09 am
Forum: Music Tech DIY
Topic: SMT SMD training practice kit, o excuse no, very cheap
Replies: 26
Views: 1249

Yesterday turned a phobic like me into a pro, right after the first component was soldered. A pincer is really all the extra equipment one needs for 0805 soldering. It was actually way easier than through hole mounting.
by Stinktier86
Thu Jan 15, 2015 4:27 am
Forum: Music Tech DIY
Topic: [INTEREST CHECK] New Vactrol Order T-Shirts
Replies: 54
Views: 4019

I'm in!
by Stinktier86
Thu Nov 13, 2014 4:53 am
Forum: Music Tech DIY
Topic: LCR0202 - Cheap Chinese vactrol
Replies: 6
Views: 1212

Can you measure the response time between on and off voltages? New vactrols seem exciting!
by Stinktier86
Thu Nov 06, 2014 7:28 am
Forum: Music Tech DIY
Topic: [BUILD] Fonitronik Cascade - 4hp cascading attenuvert' mixer
Replies: 112
Views: 11765

I've got a bunch of fonik's chicklets (and panels) in my drawer. they are basically identical, by the look of it, ie. i could arrange them in a cascaded fashion aswell, right?

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