Search found 977 matches

by joem
Fri Jan 15, 2021 5:12 pm
Forum: Music Tech DIY
Topic: Kikad pcb layout to front panel
Replies: 7
Views: 229

Re: Kikad pcb layout to front panel

yan6 wrote:
Thu Jan 14, 2021 1:27 pm
Can inkscape hold both graphics and cutlines
Yup. With that extension, each layer in Inkscape represents a PCB layer, including an edge cut layer, if that's what you mean.
by joem
Wed Jan 13, 2021 5:15 pm
Forum: Eurorack Modules
Topic: Hiss noise from Behringer 914 fixed filter bank
Replies: 8
Views: 374

Re: Hiss noise from Behringer 914 fixed filter bank

If the output volume of the 914 is low, does that mean you're turning up the gain on your Tascam when you connect it (compared to when you connect the Elements)? Because turning up the gain will amplify the noise floor too, so that could be where your noise is coming from. It's also possible it's ju...
by joem
Fri Jan 08, 2021 5:12 pm
Forum: Music Tech DIY
Topic: diy partial-kit frustration rant
Replies: 54
Views: 1269

Re: diy partial-kit frustration rant

Here's an idea that I don't think has been mentioned here yet here, and it's a technique I sometimes use as a builder: start looking into ordering all the parts before you even order your PCBs. I started doing this initially to see what projects have a lot of similar parts so it would make sense to ...
by joem
Mon Jan 04, 2021 5:08 pm
Forum: Music Tech DIY
Topic: NeoTrellis + Teensy grid controller
Replies: 3
Views: 113

Re: NeoTrellis + Teensy grid controller

No issues that I can think of. The only thing that would potentially be a concern would be how you protect the Teensy digital ins/outs, but if you're using the Temps Util/o_C input/output circuits, you'll be fine.
by joem
Fri Jan 01, 2021 5:52 pm
Forum: Music Tech DIY
Topic: A circuit that does something when an audio signal is present
Replies: 15
Views: 441

Re: A circuit that does something when an audio signal is present

You need to rectify the AC input signal and feed it into a capacitor... Do you know where I can find a good synth diy example of this? I'm assuming the rectification is done using a diode of some sort - maybe two. Thank you. Rectification isn't synth specific, so you can just look for "half-wave re...
by joem
Tue Dec 29, 2020 5:40 pm
Forum: Music Tech DIY
Topic: An idea for a specialized synth Q & A platform
Replies: 24
Views: 386

Re: An idea for a specialized synth Q & A platform

It's an interesting idea, OP, and please move ahead with it if you want. Don't let people saying "why do we need that" stop you. If it's better enough, people will use it. But it needs to be a lot better than the existing options in order to replace them. If it's a little better, you won't get a cri...
by joem
Mon Dec 28, 2020 5:25 pm
Forum: Music Tech DIY
Topic: A joystick schematic acceptance
Replies: 10
Views: 370

Re: A joystick schematic acceptance

I'm not super knowledgeable of electronics, so maybe this is a dumb question, but what does the 1K resistor do in this manual gate circuit?
by joem
Wed Dec 23, 2020 5:00 pm
Forum: Music Tech DIY
Topic: DIY Sequencer Multitrack with display
Replies: 5
Views: 320

Re: DIY Sequencer Multitrack with display

If you're ok with the Ornament and Crime UI, then you might be interested in the OCP: http://diy.plum-audio.com/projects/OCP/

It's an O&C that's all through-hole DIY and it has a few niceties that the O&C/uO_c doesn't, like attenuverters on the inputs. It's bigger than a uO_c but not a lot bigger.
by joem
Tue Dec 22, 2020 5:30 pm
Forum: Music Tech DIY
Topic: Source of AI Synthesis power adapter PCB, or Euro-to-MOTM converter cable?
Replies: 4
Views: 114

Re: Source of AI Synthesis power adapter PCB, or Euro-to-MOTM converter cable?

Have you asked AI Synthesis? Abe might have more on the way, or a spare couple sitting around. That said, making PCBs is surprisingly easy these days, and that one in particular would be very easy. Kicad is a free program that'll let you do it. I think all of those footprints are already built in, t...
by joem
Tue Dec 22, 2020 5:07 pm
Forum: Music Tech DIY
Topic: Using SVG2shenzhen to make PCB panels
Replies: 11
Views: 525

Re: Using SVG2shenzhen to make PCB panels

That's a great guide, Quinie. Thanks for writing it up and sharing!
by joem
Mon Dec 21, 2020 5:20 pm
Forum: Music Tech DIY
Topic: MN Maths mixer section
Replies: 1
Views: 197

Re: MN Maths mixer section

From the Maths manual: OR Bus Output: Result of the Analog Logic OR function with respect to the settings of the attenuverter controls for Channels 1, 2, 3, and 4. Range 0V to 10V. SUM Bus Output: Sum of the applied voltages with respect to the settings of the attenuverter controls for Channels 1, 2...
by joem
Thu Dec 17, 2020 5:28 pm
Forum: Eurorack Modules
Topic: Stacking pulse LFOs
Replies: 12
Views: 394

Re: Stacking pulse LFOs

Sounds like it'd be a fun alt-mode to be programmed for MI Stages.
by joem
Thu Dec 17, 2020 4:58 pm
Forum: Video Synthesis
Topic: What is your way of triggering video clips? (software)
Replies: 9
Views: 262

Re: What is your way of triggering video clips? (software)

If you want a standalone device that can do this, other than iOS, r_e_c_u_r on a raspberry pi can do this. https://github.com/langolierz/r_e_c_u_r
by joem
Wed Dec 16, 2020 5:14 pm
Forum: Eurorack Modules
Topic: Do you own an oscilloscope?
Replies: 85
Views: 2541

Re: Do you own an oscilloscope?

I have a scope for electronics but have never used it with my modular. I get by just fine using a jack LED that cost $5 or $10 (and is even cheaper if you just make one yourself). Works great for seeing what LFOs are doing. I've never wanted to see what a VCO was doing... I just use my ears if I don...
by joem
Wed Dec 16, 2020 5:08 pm
Forum: Eurorack Modules
Topic: Diy Eurorack Vco help
Replies: 2
Views: 72

Re: Diy Eurorack Vco help

This question might be a better fit for the DIY subforum: https://www.muffwiggler.com/forum/viewforum.php?f=17 If you check the Doepfer site for their A-100 Technical Details page http://www.doepfer.de/home_e.htm they have diagrams/explanations of the power connectors. (Doepfer originated the eurora...
by joem
Wed Dec 16, 2020 4:38 pm
Forum: Video Synthesis
Topic: Deriving CV from video feed
Replies: 5
Views: 174

Re: Deriving CV from video feed

You could also do something similar to the MAX/Jitter stuff in Processing, if that's more your thing. I did something like that once long ago (now lost the code) but a screencap of that is actually my profile pic here.
by joem
Mon Dec 14, 2020 10:27 pm
Forum: Music Tech DIY
Topic: Help from electronics guru please - SUCCESS!!
Replies: 28
Views: 684

Re: Help from electronics guru please

Looks pretty good to me. My one note is that you've labeled the input that goes to pin 11 "trigger" but a gate signal will likely be more useful in your case. The switch will only be switched to when the signal on pin 11 is high, so if you use a trigger on that input it won't switch for very long si...
by joem
Mon Dec 14, 2020 9:59 pm
Forum: Video Synthesis
Topic: HD sync&blanking generator – DIY project
Replies: 4
Views: 138

Re: HD sync&blanking generator – DIY project

Ah, I see now. I was thinking composite video encoding, but I see now that's not it. Still pretty cool!
by joem
Mon Dec 14, 2020 4:46 pm
Forum: Video Synthesis
Topic: HD sync&blanking generator – DIY project
Replies: 4
Views: 138

Re: HD sync&blanking generator – DIY project

That's interesting! I'm at work so I haven't been able to read the linked page super closely, but does this just generate sync/blanking, or does it also encode the video from an input? I guess I'm a little confused on what's an input and what's an output here. Either way I'm definitely curious about...
by joem
Fri Dec 11, 2020 5:30 pm
Forum: Video Synthesis
Topic: Newbie questions on signal flow
Replies: 6
Views: 173

Re: Newbie questions on signal flow

Also I want to second the recommendation to take it slow. Memory Palace and Structure both are pretty powerful and will keep you quite busy for a while if you just get one and nothing else. After playing with either for a while you'll start to get a feel for the best way you want to expand.
by joem
Fri Dec 11, 2020 5:28 pm
Forum: Video Synthesis
Topic: Newbie questions on signal flow
Replies: 6
Views: 173

Re: Newbie questions on signal flow

Agawell covered pretty much everything I would have mentioned except: The Cadet modules could have their PCBs mounted on the back/bottom of the Vessel and then you could wire the I/O to the front panels. It's a little bit of a pain, but if you really want them in there and they won't fit, it's an op...
by joem
Fri Dec 11, 2020 5:16 pm
Forum: Music Tech DIY
Topic: Help from electronics guru please - SUCCESS!!
Replies: 28
Views: 684

Re: Help from electronics guru please

Since you don't need your two clock signals to be mixed, you can use an analog multiplexer IC to switch between the two clock signals (as guest already mentioned). The CD4053B has three 2-to-1 switches so that'd be a decent one to use (you only need to use one of them). (This is similar to the Doepf...
by joem
Fri Dec 11, 2020 2:45 pm
Forum: Eurorack Modules
Topic: Mutable Instruments Blades
Replies: 165
Views: 10557

Re: Mutable Instruments Blades

Foghorn wrote:
Fri Dec 11, 2020 2:36 pm
What have I done?
I woke up this morning to an email from Control Voltage confirming my order of Blades.
Never ordered from Control, and I thought they were in NY city.

Now, where the frick am I going to put it.
Control is in NYC, Control Voltage is in Portland.
by joem
Thu Dec 10, 2020 5:11 pm
Forum: Music Tech DIY
Topic: Basic Attenuator Question
Replies: 8
Views: 200

Re: Basic Attenuator Question

Just a small FYI note for OP: The reason such a circuit works to attenuate the signal is because it's working as a voltage divider. It's a great basic electronics concept to learn about, it's used all over the place, and it's very handy. I highly recommend looking into voltage dividers.
by joem
Wed Dec 09, 2020 5:14 pm
Forum: Video Synthesis
Topic: Utility Modules for Video
Replies: 2
Views: 132

Re: Utility Modules for Video

Other boring module that's very useful for video: passive mults! LZX modules all have buffered outputs, so splitting signals with passive mults works fine. And especially in a small system, splitting signals to send them different places is very very useful. Even splitting a signal and feeding it to...

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