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In my rack I have -12,V 12V and +5V at my disposal, all are regulated and accessible via the power rail of the rack. If a module needs 5V, I supply 5V via the eurorack connector from the +5V supply. However, I do have some modules that have their own 5V regulator on board which is fed from the 12V pin of the eurorack connector. An arduino I would normally supply power to by connecting the 5V-pin of the arduino to the +5V of the powersupply.

Yes it is. Have a look at github/josbouten. It is likely to be published there in the future.

The device contains an STM32F103 microcontroller (aka BluePill) which scans the sliders and using their settings produces midi data on up to 4 separate midi channels. The tempo is derived via an internal clock (I'm starting the demo by pressing a tap button on the bottom left) or via a clock input. In this demo the data is sent to ableton which is loaded with 4 soft synths and which plays notes and rests. The buttons 1, 2, 3 and 4 to the right each correspond with a midi channel. Once a button is pressed, the sliders and knobs control what is happening for that channel. Press another one and the controls can be used to influence the notes sent to that channel. In the demo you see me start with settings for knob 3, then 4, then 1 and finally 2 and later I go back and forth a bit. This is a prototype device, so some of the knob/button titles are not correct. E.g. 'legato' should be 'velocity' as in 'note velocity', but that is only been like that since I changed the code the other day. But as I said, this is a prototype, so the functions of the controls may still change.

@@josbouten bonkers!

Yes, thanks, I studied this information ... but I still have a question about the voltage, what voltage should be at the linear inputs and outputs, in numbers?)))

@@andreykotelnikov8352 The circuit will not dampen the input voltage if you use the "Line in" input. And although the Dry/Wet cicruit will dampen the voltage a bit you should not exceed the voltage that you are experiencing distortion at (in your case 0.7 V) by a lot. The euro rack input will halve the voltage before it is sent to the wet/dry circuit, so you have some more headroom there. The output is whatever you want it to be as you can choose the amplification of the signal that comes from the fx-board via the GAIN1 and GAIN2 port. Because of the resistor divider at the output the Line output voltage will be about 1/3 of the Euro Rack output voltage. If you want the output on the line out to be of line level, then connect a line level signal to the input, set the dry/wet to wet and set the gain so that the output on average is at line level. To make things simple during the measurements it is wise to choose an effect that does not affect the signal's amplitude too much. If you are interested in DIY reverb devices, you may also be interested in another project I've built. It is called Time-Warp-O-Matic. There is some more info about this here: lookmumnocomputer.discourse.group/t/time-warp-o-matic/2807

@@zaphodb5361 yes thanks for the answer .. I understand that ..)) but anyway, I had to find out by experience that the voltage of 0.7v is the standard for linear audio signals))) ... and later, this is what I managed to find on Wikipedia : line signal levels +4dBu = 1.228V, 0dBu = 0.775V, -10dBV = 0.316V ... And just in case I want to leave this information here, just in case it will be useful to someone, about the signals of the eurorack modules: Audio signals usually have a maximum of 10 V peak to peak (i.e. from -5 V to + 5 V) Control voltages can be unipolar. or bipolar. Bipolar control voltages are typically 5V peak-to-peak (i.e. -2.5V to +2.5V), unipolar voltages 0V to 8V. The V/Octave scale is used for pitch information. Trigger, Gate, or Clock signals are 0V to 5V digital pulses commonly used for timing and event signaling. Now it becomes clear that the signal from the eurorack modules needs to be attenuated by about 10 times in order to reach the linear level of the signals, in this case.

@@andreykotelnikov8352 Thx for your reply and the info you provided. "the signal from the eurorack modules needs to be attenuated by about 10 times" may be true in theory, however I've found that not all modules conform to the 'norm'. So in practise it is often wise to add a variable gain stage to an input of a module where the gain can be smaller than 1 thus used to dampen the input signal.

@@josbouten yes, I completely agree))) therefore, the input attenuator will work as it should, while having the ability to adjust the attenuation from 1 to 10 times .... I think so ..))

You mean the scratchy sound shown at about 1:04? That was created by multiplying the signal with itself. This results in all positive values.

It is not intended to be for sale as this is a one off I made for myself. But if you make me an offer I cannot refuse ....

@@josbouten do you plan to make more for a commercial run ? To me it’s worth between 3 and 4 hundred usd.

@@thomasm934 No, and it is definitely not worth that kind of money. You will be better off buying one at your favourite dealer and converting it to a euro rack module yourself if that is your goal.

Thx. No, you can see the vocoder in the video from t = 7s on. It consists of 2 modified B914 filter banks (one for the carrier and one for the modulator signals), 14 custom made envelope followers, a patch panel and 2 modified Doepfer A-130-8 VCAs which I connected the patch pannel, carrier band signals and envelope followers to.

ps staring at the background image for a while is seriously trippy. is that deepfake?

@@SakoMeowington The picture was created by taking an image of me at a young age and transfering the color and drawing style of a painting by Vincent van Gogh called `Vase with 15 Sunflowers` to it using transfer learning (a deep learning technique).

I'm not sure what you mean by dummy files. The schematic can be found here: github.com/josbouten/Scope-O-Matic/blob/master/Scope-O-Matic_v0.2.png

@@zaphodb5361 I was trying to open the KiCad BRD and schematic, but now that I think about it that makes sense, since you used veroboard. XD

@@michiganderryan5293 I've only drawn a schematic in KiCad, but never designed a PCB. You should be able to open the files in the latest KiCad version. I've added a link to a forum in the description of the video which contains more info about the oscilloscope.

@@michiganderryan5293 I've only drawn a schematic in KiCad but never designed a PCB. I've added a link to a forum where I've written some more information about the oscilloscope in the video description .

De feedback bestaat uit een verbinding tussen de uitgang en de ingang via een potmeter. Die loopt via een schakelcontact in een jack input. Zodra je daar een jack inprikt, kun je 'm als extra input gebruiken om zo 2 signalen tegelijkertijd door de reverb te sturen. Je kunt er een tail kunstmatig langer mee maken, maar niet korter.

Thx! If you make any changes, let me know. And also, please post a picture of the final module somewhere. It is always fun to see how people implement their scope.

I made a previous video which shows the oscilloscope on a bread board (includes some sound from the wave folder): th-cam.com/video/0mLCFH7r_a0/w-d-xo.html You may want to have a look at it as well. GIve me a few days. and I will be sharing the schematic of the oscilloscope and the wavefolder on: lookmumnocomputer.discourse.group

I´m looking forward to whatever you come up with! I would suggest you try the example included on github and work from there.

Not from eBay but from aliexpress.

I'm using a Korg Wavestation EX for the base chord which is audible throughout the demo. The rest all stems from the Neutron. As you can see from the changing lights the Neutron's waveform changes over time.