Search found 1649 matches

by devinw1
Mon Oct 26, 2020 6:39 pm
Forum: Music Tech DIY
Topic: Something New from Doc Sketchy
Replies: 634
Views: 45766

Re: Something New from Doc Sketchy

I absolutely LOVE old Yes. Close to The Edge, Fragile. So good top to bottom.
by devinw1
Mon Oct 26, 2020 10:38 am
Forum: Music Tech DIY
Topic: Another little somthing I've been working on: DR110 inspired 6 voice drum module
Replies: 56
Views: 1430

Re: Another little somthing I've been working on: DR110 inspired 6 voice drum module

Thanks toneburst! As far as the clap "reverb", indeed it really is simple and doesn't take much real estate except one pot. It's just the decay of the filtered noise from the last clap pulse. So, I'll probably end up keeping it. I am going to start working on a decent way to add pitch CV to snare an...
by devinw1
Mon Oct 26, 2020 10:33 am
Forum: Music Tech DIY
Topic: Project PRO2021 - A Pro-One keyboard synth
Replies: 1279
Views: 70863

Re: Project PRO2021 - A Pro-One keyboard synth

That's great! I know the feeling, but that's why you've just got to keep a steady stream of projects cued up! :D
by devinw1
Fri Oct 23, 2020 4:21 pm
Forum: Music Tech DIY
Topic: AS3397
Replies: 4
Views: 168

Re: AS3397

Yeah I think it is a CEM3396 copy for the most part. From what I understand, this chip, and some others like it were made to make it easy to make a polyphonic synth without having to mess around with individual analalog VCOs. You provide all the voice frequencies from a microprocessor or divide-down...
by devinw1
Fri Oct 23, 2020 2:06 pm
Forum: Music Tech DIY
Topic: Another little somthing I've been working on: DR110 inspired 6 voice drum module
Replies: 56
Views: 1430

Re: Another little somthing I've been working on: DR110 inspired 6 voice drum module

Thanks Kevin!

So, "Closed HH and Open HH" does actually fit. It's a weeee bit tight, but i think it works. What ya'll think?:
ad110panelnew2.png
by devinw1
Fri Oct 23, 2020 1:52 pm
Forum: Eurorack Modules
Topic: The PERFECT Knob torque
Replies: 49
Views: 954

Re: The PERFECT Knob resistance

The reason those old FM tuner knobs feel so good is because there is a big ass mechanical system in there with a big weighted wheel that moves the tuning mechanism over a very long range. It's not a pot at all generally. And yeah, those are freakin' rad.
by devinw1
Fri Oct 23, 2020 11:49 am
Forum: Music Tech DIY
Topic: Dannysound EN129 failed build help!
Replies: 10
Views: 209

Re: Dannysound EN129 failed build help!

thats the 78L09, i think he needs the 79L09, which is looking quite hard to get these days. never thought id see that day. Oh shit, you're right. Doh! Mouser search tricked me. Dang, that's nuts! You're right, only 1 version of the negative 79L09 at mouser and it's SMT. That does not seem like a pa...
by devinw1
Fri Oct 23, 2020 10:50 am
Forum: Music Tech DIY
Topic: Dannysound EN129 failed build help!
Replies: 10
Views: 209

Re: Dannysound EN129 failed build help!

Where are you located? Why not just get it from Mouser or Digikey? 79L09 is a white bread part. It's just a 9V positive linear regulator.

https://www.mouser.com/ProductDetail/ST ... Wr5A%3D%3D

Thousands in stock, 46 cents.
by devinw1
Fri Oct 23, 2020 10:41 am
Forum: Music Tech DIY
Topic: Another little somthing I've been working on: DR110 inspired 6 voice drum module
Replies: 56
Views: 1430

Re: Another little somthing I've been working on: DR110 inspired 6 voice drum module

htor wrote:
Fri Oct 23, 2020 2:52 am
beautiful module, mister. i don't know how you do it.

suggestion for panel if you have room.
what about using "C. Hat, O. Hat" instead of "CH" and "OH" to go with general style?
Thanks! I could do that if makes more sense. Or what about C. HH, O.HH? Lemme play around and see what fits OK.
by devinw1
Fri Oct 23, 2020 10:39 am
Forum: Music Tech DIY
Topic: Another little somthing I've been working on: DR110 inspired 6 voice drum module
Replies: 56
Views: 1430

Re: Another little somthing I've been working on: DR110 inspired 6 voice drum module

Any chance of having a Pitch CV? I don't think it would be possible to squeeze in at this point. The way most of these Roland-type drums work is that they use a damped oscillator design, not a VCO. So to change pitch, I am actually putting a pot on the first "pole" of the RC filter in the loop. To ...
by devinw1
Thu Oct 22, 2020 11:32 pm
Forum: Music Tech DIY
Topic: Another little somthing I've been working on: DR110 inspired 6 voice drum module
Replies: 56
Views: 1430

Re: Another little somthing I've been working on: DR110 inspired 6 voice drum module

And a pic of the new layout on the completed Beta2 proto:
AD110 Beta 2 Proto.jpg
by devinw1
Thu Oct 22, 2020 6:22 pm
Forum: Music Tech DIY
Topic: Moog Memorymoog sucessfully cloned
Replies: 189
Views: 8650

Re: Moog Memorymoog sucessfully cloned

Anyway, I do not think an eventual kit would have the logo, the exact same panel or the same circuits. An update is much needed: MIDI, response to velocity, larger patch storage, etc, etc. I do not see it being offered as a Memorymoog clone, but as a synthesizer inspired in the Memorymoog look and ...
by devinw1
Thu Oct 22, 2020 12:40 pm
Forum: Music Tech DIY
Topic: Another little somthing I've been working on: DR110 inspired 6 voice drum module
Replies: 56
Views: 1430

Re: Another little somthing I've been working on: DR110 inspired 6 voice drum module

Ah, yeah you're right. Hardly any difference -55 to 125C but the min and max part wise is quite large!
by devinw1
Thu Oct 22, 2020 11:40 am
Forum: Music Tech DIY
Topic: Dannysound EN129 failed build help!
Replies: 10
Views: 209

Re: Dannysound EN129 failed build help!

Oh man, yeah that will be a problem haha. You shouldn't have caused any other damage putting that BJT in there instead of the votlage regulator except maybe frying the BJT that you're going to take out. The 9V regulators are involved with the voltages for coarse and fine tuning and the reference pit...
by devinw1
Thu Oct 22, 2020 11:35 am
Forum: Music Tech DIY
Topic: Another little somthing I've been working on: DR110 inspired 6 voice drum module
Replies: 56
Views: 1430

Re: Another little somthing I've been working on: DR110 inspired 6 voice drum module

thanks for grabbing that. unless the input to the first stage is something less square, i guess we can assume that this oscillator is also dependent upon internal CMOS thresholds for frequency. Yeah, I think so. I would think the threshold tolerances might be tighter on a standard inverter like thi...
by devinw1
Thu Oct 22, 2020 11:23 am
Forum: Music Tech DIY
Topic: Making your own panels with a desktop CNC
Replies: 224
Views: 4100

Re: Making your own panels with a desktop CNC

I have not read this whole thread but I see you are using a "mister" type of coolant dispenser. I am a machinist and sometimes do about the same things you are doing with Aluminum panels. One trick that I have found out is to use isopropanol as a coolant. A machinist would call what comes out of th...
by devinw1
Wed Oct 21, 2020 11:31 pm
Forum: Music Tech DIY
Topic: Another little somthing I've been working on: DR110 inspired 6 voice drum module
Replies: 56
Views: 1430

Re: Another little somthing I've been working on: DR110 inspired 6 voice drum module

guest, i measured the i/o between the 2 inverters on the new CD4049UB cymbal oscs. Pic below. All the frequencies are pretty damn close, at this point, one can't do better because these film caps pretty much only go to 5% tolerance. I selected ones that were within more like +/-3% and got these freq...
by devinw1
Wed Oct 21, 2020 11:27 pm
Forum: Music Tech DIY
Topic: Making your own panels with a desktop CNC
Replies: 224
Views: 4100

Re: Making your own panels with a desktop CNC

2nd time's a charm! Tonight's success on ye old 6040:
ad110panel_beta2.jpg
by devinw1
Wed Oct 21, 2020 4:46 pm
Forum: Music Tech DIY
Topic: [IC] vintage 6-voice polysynth kit project?
Replies: 42
Views: 1408

Re: [IC] vintage 6-voice polysynth kit project?

lusoman wrote:
Wed Oct 21, 2020 3:52 pm
:rastanana: Well, looky what turned up from SynthCube this morning:

IMG_2188.JPG

lusoman is very excited...

:cloud:
:tu: :tu: :tu:
by devinw1
Wed Oct 21, 2020 4:45 pm
Forum: Music Tech DIY
Topic: Making your own panels with a desktop CNC
Replies: 224
Views: 4100

Re: Making your own panels with a desktop CNC

I also started running the mister with the flow cranked way up, and yeah it actually mists instead of sputtering liquid all over. Much better. Oh, interesting what psi is the airflow running at? I have my air at 20 psi and them slowly open the liquid valve until it seems misty (which is to say only...
by devinw1
Wed Oct 21, 2020 11:38 am
Forum: Music Tech DIY
Topic: Making your own panels with a desktop CNC
Replies: 224
Views: 4100

Re: Making your own panels with a desktop CNC

Got some of the McMaster "Red tape" and it works great! Thanks for the reco on that. I also started running the mister with the flow cranked way up, and yeah it actually mists instead of sputtering liquid all over. Much better. Just waiting for a replacement Harvey marking tool to show up and I'm go...
by devinw1
Wed Oct 21, 2020 10:40 am
Forum: Music Tech DIY
Topic: Another little somthing I've been working on: DR110 inspired 6 voice drum module
Replies: 56
Views: 1430

Re: Another little somthing I've been working on: DR110 inspired 6 voice drum module

Maybe it's because I started working with smd lately (better late than never) but I could see a standalone version on a single pcb with smd components and some extra controls... In any case very nice project, I can't think of a lot of DIY analog drum projects with triggers and separate outs like th...
by devinw1
Wed Oct 21, 2020 10:16 am
Forum: Music Tech DIY
Topic: [IC] vintage 6-voice polysynth kit project?
Replies: 42
Views: 1408

Re: [IC] vintage 6-voice polysynth kit project?

Keyboard exlcuded in this instance obviously - assuming it has MIDI. There's no way to have the panel fit both keyboard and 19" rack. No matter what you do, it's not optimal for one or the other. Google Access Virus keyboard model and you instantly know what I'm talking about. So I totally understa...
by devinw1
Tue Oct 20, 2020 6:11 pm
Forum: Music Tech DIY
Topic: [IC] vintage 6-voice polysynth kit project?
Replies: 42
Views: 1408

Re: [IC] vintage 6-voice polysynth kit project?

Hot diggity dog! This is gonna be huge!

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