#vco — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #vco, aggregated by home.social.
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@vcoe_mobilitaet_mit_zukunft Der VCÖ hat sich zu einer vielbeachteten Stimme in Österreich entwickelt. Ihr werdet vom ORF regelmäßig zitiert.
Herzliche Gratulation!
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Franz-Josefs-Kai: erste Unfallspuren an der Gefahrenstelle
Erste Unfallspuren an der Augartenbrücke. Was ÖAMTC und VCÖ zur gefährlichen Radampel sagen – und was daraus für eine sichere Lösung folgt.
https://ingo.lantschner.name/post/2026-06-27_ampel-kai-update/@radfahren_at
@fahrrad
#Wien #Fahrrad #Radwege #Verkehrssicherheit #Ampel #VLSA #Augartenbrücke #FranzJosefKai #Fahrradinfrastruktur #Radfahren #Verkehrswende #ÖAMTC #VCÖ #Radkummerkasten -
„Um die Bushaltestelle erreichen zu können, muss eine Freilandstraße überquert werden, auf der ein Tempolimit von 100 km/h gilt“, wurde beim #VCÖ Haltestellen-Check gemeldet. Das ist für alle Fahrgäste extrem gefährlich und ganz besonders für Kinder und ältere Menschen. #waszuändernist Sichere Bushaltestellen braucht das Land! https://vorarlberg.orf.at/stories/3354115/
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Microrack – First Impressions
When I first heard about the Microrack concept, I was still playing around with my own Educational DIY Synth Thing so naturally I was really interested in seeing what it would be about. That was back-end of 2024. It has taken until now to realise that from the original Kickstarter.
Now that I have one in my possession, are are a few notes about it as I start to play.
What Arrived
I ordered the Synth Starter Kit and an additional Subtractive Extra Kit. This has given me the following modules:
- 1x USB-C power module
- 1x 3.5mm speaker/output module
- 2x VCO/LFO
- 2x High/Low pass VCF
- 2x AD EG
- 1x Noise + S/H
- 1x Clock Counter
- 1x Lo-Fi Delay
- 1x Stylus Keyboard
- 1x 830 point solderless breadboard
- 1x pack of “premium” jumper leads
One immediate surprise was that there was only one breadboard and now additional means to power it. The description of the Subtractive Extra Kit in the actual pledge was as follows:
So I was expecting two breadboards and an additional set of jumper wires and whatever a “power extender” was. I’ve pinged them a message just to check I’m not missing anything.
But in reality, as these are standard breadboards and wires, the extender is as simple as connecting the power rails together between two breadboards. In fact that isn’t even necessary if the power module is placed in the middle across both boards, as shown in my photo above. So I just added another 830 point breadboard myself and got started.
First Use
Before the first use, I took their advice and “primed” the solderless breadboard. I soldered up a quick “jumper pin pusher” as shown below to push into each of the power rail pin holes to ensure the modules can be inserted easily.
My first attempt used a USB power hub and USB-C lead. The first visual impressions are great – the LEDs lighting up through the PCBs look really good and make for very pleasing visual feedback on what is going on.
Everything worked fine to start with, when there was just an oscillator and output. But when adding the filter and second oscillator as a LFO, I soon found that certain combinations would cause a power-out. It turns out it is really easy to overload a typical USB power pack once there are a few modules running.
I switched to a Raspberry Pi 4 USB-C power supply, which is rated at 5.1V / 3.0A. This works really well and I’ve not had any power issues since even with all modules powered up.
It is curious that the system only uses the four power rails of the breadboard. This introduces a few limitations:
- Modules can’t be placed absolutely anywhere – the breadboards have gaps where there are no pin holes so you have to place modules accordingly.
- Modules have to be placed to span the middle gap, as that has no continuity in the tracks, otherwise some jumper wires are required.
- The rails are not symmetrical – they provide +5V, -5V, +12V and GND so it is important to know which is which!
The idea, as I understand it, is to allow prototyping of additional circuits on the breadboard itself. But for most cases, the centre blocks of pin holes are ignored.
A basic oscillator – filter – output synth chain is easily put together and can be continuous driven or driven via CV from the stylus keyboard.
And this was where I hit the first hints of the limitations of the choice of provided modules.
Module Selection
The more I think about it, the more the choice of modules for the Synth Starter Kit seems a little odd.
When adding in the stylus keyboard, it has a GATE and CV output. CV to the oscillator is obvious. And naturally the GATE would probably be expected to go to an envelope generator.
But there is no VCA! I have a Lo-Fi delay module and an audio output module, but no other means, as far as I can see, of applying an envelope to an amplitude.
The clock module is also a bit of a mystery. First of all, it isn’t actually a clock but takes a clock input and uses to drive 8 GATE outputs, so to my mind that makes it a clock-driven gate sequencer. But there is nothing to generate a clock directly and I have nothing to trigger off 8 GATE outputs.
Similarly I’m struggling at this stage to know what to do with the noise + S/H module. With no EG-driven VCA the noise outputs make little sense, and I’m not quite sure how to drive the S/H module.
Enlightenment Dawns…
At this point I took a proper look at the two provided “cheat sheets” that came with the system and things start to make a little more sense.
There is a “Bass and Drum” patch that shows how to use the LFO as the clock with a reset after four steps, triggering the EG on step one and noise via the S/H on all four steps. The EG is driving the filter and you get a pretty quirky noisy pulse with a nice “pew” on every fourth step.
I’m not entirely sure what “Jacuzzi + The Drone” was all about – that just seemed quite a few farty noises that I couldn’t get to do anything interesting (to me). I might have to give this another go later.
“ARP Lead” shows how to use the EG as a clock source and the GATE sequencer to drive a pitch level on certain steps of the clock. It also shows how the stylus can be used to set the base pitch for the sequence.
I’ve also played with using the clock module as a frequency divider to get a sub-octave.
At this point, we can see how creative use of the modules starts to show how the components can come together for something interesting.
Good Points
The modules do seem very full-featured. The oscillator for example, has VCO and LFO modes, with three output waveforms and the option for FM. It also has an option for -5V to +5V or 0 to +5V to support full audio output or use as a CV for other modules. I’m not entirely sure I understand at this stage what all the LEDs are telling me, but I guess I’ll figure that out.
There are some nice conventions too: blue headers for inputs, red for outputs, for example. And it is obvious some modules are designed for plugging next to each other.
The use of jumper wires makes for very easy integration with other things, so I’m looking forward to seeing how I can hook it up to my Volca Modular and my Educational DIY Synth Thing.
The modules are fully open sourced and documented online here: https://github.com/microrack/modules
The PCB design is very neat and tidy and seems quite a master of minaturisation.
The electrical specification is pretty complete with lots of features designed for robust protection when using with other devices. All provided modules have protections for shorts, reverse polarity, over and under voltage, and so on. The mechanical specification is also fully published. All details here: https://specs.microrack.org/
In short, once you get stuck in, everything seems very well thought out.
Conclusion
My initial hope was for use in an educational setting, but I’m not sure the bare PCB approach would be up to that. I don’t know if there would be ESD issues, but I do think that repeatedly plugging in and out of the breadboard would eventually take its toll on the power pins. Also, I think it would be far too easy to get the power connections either shorted or mixed up, especially if creating prototype additional circuits.
As a functioning synth for my own messing about, I’m going to have to invest in a couple more modules I think. I will need at least one mixer/VCA, and probably one of the headers-to-jacks modules too. On the main site, it still lists modules as for pre-order – I suspect that is because the Kickstarter units are still on their way to backers.
I wasn’t originally interested in MIDI to CV or the microcontroller DIY board, as I figured those would be fairly easy to do myself. And whilst that is still the case, I’m still wondering about their addition to create more of a stand-alone setup to play with.
It is interesting to note that there is a Eurorack mounting kit, but it is quite expensive, so I’m not sure I’m too fussed about that myself. But I might attempt to knock up some kind of 3D printed frame for housing a couple of modules. In fact, some users in the Microrack forums have done exactly that.
On balance, this is a very well thought out kit in general terms, but I think the choice of initial modules has veered towards the “beat box” rather than actual synth, but that is perhaps just my preference. But the three sample patches, and some of the ideas starting to appear in the forums, do show the potential of even what I already have.
At this stage, I’m looking forward to some proper playing around and I plan to digest some of the design information to see what I can do with the DIY side of the kit too.
I haven’t talked about the audio of course. It is pretty Lo-Fi, which fits right in for me of course.
There are already a number of videos up online from people far more knowledgeable than me, showing it in action. So I’ll leave it to those to show what it can do audio wise.
Like many systems, I think this will reward any time spent getting to know it and what the modules can do.
Kevin
#envelopeGenerator #gate #lfo #microrack #vcf #vco -
Generation 65 plus: "Der #VCÖ schlägt vor, dass Personen, die ihren #Führerschein freiwillig abgeben, drei Jahre lang kostenlos ein #Klimaticket #Steiermark erhalten."
https://steiermark.orf.at/stories/3339934/
Mit solchen Anreizen kann man Leben retten. 👍
Und weiterhin Ressourcen in den Ausbau der #Öffis am Land stecken.
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Gefährliche Autotüren: Über 200 Radfahrer bei „Dooring“-Unfällen in Österreich verletzt
So genannte #Dooring-Unfälle gehören zu den gefährlichsten Situationen im #Straßenverkehr für #Radfahrerinnen und #Radfahrer. Laut dem Verkehrsclub #Österreich (#VCÖ) wurden im vergangenen Jahr in Österreich 206 Menschen bei solchen Unfällen verletzt - um elf mehr als 2023. Todesopfer gab es zum Glück keine.
Das Thema hat in diesen Tagen traurige Aktualität: In Hamburg verstarb kürzlich die Schauspielerin #WandaPerdelwitz an den Folgen eines Dooring-Unfalls. Eine unachtsam geöffnete Autoftür (nein, die Fenster machen da keine Probleme), die sich im falschen Moment öffnet - für Menschen auf dem Rad, am Scooter oder Moped kann das lebensgefährlich enden.
Die Zahlen sprechen für sich:
Im Zeitraum von 2020 bis 2025 wurden laut #StatistikAustria 1.108 Dooring-Unfälle registriert. Dabei erlitten 1.110 Radfahrerinnen und Radfahrer Verletzungen, drei Menschen kamen ums Leben.Auch darüber hinaus zeigt die Unfallstatistik ein deutliches Muster: In 74 Prozent der Unfälle zwischen #Pkw und #Fahrrad lag die Hauptschuld im vergangenen Jahr bei den #Pkw-Lenkenden.
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#TheRegister:
"
Humanity now has zero active robots at Venus as Japan ends 15-year ‘Dawn’ missionThanks for the memories, Akatsuki
"
https://www.theregister.com/2025/09/19/jaxa_dawn_akatsuki_venus_mission_ends/19.9.2025
#Akatsuki #Japan #Jaxa #PlanetC #Raumfahrt #Raumsonde #SpaceFlight #VCO #Venus #VenusClimateOrbiter
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25 APRILE 1945 – 2025: SU RADIO ONDA D’URTO INTERVISTA ALLA PARTIGIANA SANDRA GILARDELLI https://www.radiondadurto.org/2025/04/23/25-aprile-1945-2025-su-radio-onda-durto-intervista-alla-partigiana-sandra-gilardelli/ #SCELTA_NAZIONALI #sandragilardelli #INEVIDENZA #partigiane #resistenza #NAZIONALI #25aprile #piannava #verbania #delotto #anpi #vco
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Designing an FM Drum Synth from Scratch https://hackaday.com/2025/04/17/designing-an-fm-drum-synth-from-scratch/ #MusicalHacks #synthesizer #filter #synth #drum #VCA #vco #fm
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Designing an FM Drum Synth from Scratch - How it started: a simple repair job on a Roland drum machine. How it ended: a scra... - https://hackaday.com/2025/04/17/designing-an-fm-drum-synth-from-scratch/ #musicalhacks #synthesizer #filter #synth #drum #vca #vco #fm
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I'd like to improve the temperature compensation of the #VCO's, that tend to drifts slightly out of tune. Is anyone aware of a source of 3500ppm/°C tempco resistors at a reasonable price here in Europe? #synthdiy #electronics
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Neuere Studien zeigen, dass man Radwege am besten aus der alltäglichen Sicht der Betroffenen, also der Radfahrer:innen, plant. Interessant, interessant!
https://www.dolomitenstadt.at/2025/03/18/gibt-es-in-lienz-gefaehrliche-zonen-fuer-radfahrende/
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Finished #soldering the #StackSynth #VCO after the missing resistors arrived today. The tuning knobs are a bit close for my taste. The next revision will have a wider gap between.
After tuning it to roughly 1 Volt per octave, I tried it with my #sequencer. The test setup only included VCO, LFO, and mixer, though. The VCA will be the next board.
https://makertube.net/w/xwhPj4tAb2BdmPDmQuVakv
#diysynth #synthesizer -
As announced, I finished the buffer today. Also, I soldered all #SMD components to the #VCO board that I already had. The two missing resistors will follow when they arrive.
It was fun and went better than my previous attempts, since I used a smaller tip.
#diysynth #StackSynth #soldering #synthesizer -
Three new boards for my #StackSynth arrived from @aislerhq yesterday. They are buffer, #ADSR, and #VCO. The VCO is the first with #SMD components on the bottom side. Two resistor values are missing in my SMD collection: 30k and 68k. I already soldered the ADSR and tested it. The buffer will follow tomorrow.
#diysynth #soldering #synthesizer #envelopegenerator -
Finally got all of the parts together to play my #synth #vcdo (voltage controlled digital oscillator)
It’s 1v/oct, an #attiny25 is programmed to respond to the incoming voltage and behave like a #vco
It also has a gate input, voltage controlled amplitude, voltage controlled waveform select, and voltage controlled tuning (I change the frequency of the internal osc on the attiny25), but in this clip, those last three functions are controlled by potentiometers
My 4yo is playing the keyboard
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Dass #TomRottenberg der neue Chefredakteur des #Drahtesel wird ist eine spannende Personalie.
Bin gespannt wie das wird.
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How Digitally Controlled Oscillators Work
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How vintage synth oscillators work
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Lost in Sounddesign?
A good basic deepdive into how Oscillators work:
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Seit Februar in #Bregenz in Kraft: Großflächig #Tempo30. Gut für die Verkehrssicherheit, gut für die Lebensqualität der Bevölkerung. Vorbildlich und deshalb ausgezeichnet beim #VCÖ-Mobilitätspreis Vorarlberg, mehr Infos: https://vcoe.at/mobilitaetspreis-2024/vorarlberg
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Der #Bicibus Hernals ist der 1. Bicibus im deutschsprachigen Raum der jeden Schultag stattfindet. Kinder radeln gemeinsam in Begleitung von Erwachsenen zur #Schule, zu jeder Jahreszeit. Ein großartiges Projekt, das wir heute beim #VCÖ-Mobilitätspreis #Wien ausgezeichnet haben, mehr Infos hier https://vcoe.at/mobilitaetspreis-2024/wien
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Da haben wir's wieder. Rad und Fuß im Einzelhandel sind ein Muss! #vcö #vcd #binnenstadt
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@vcoe_mobilitaet_mit_zukunft Ich war heute bei einem #Billa in #Wien, und da ist auf dem Supermarktradio, mit dem das Geschäft beschallt wird, ein Hinweis auf den #Schulwegcheck des #vcö gekommen. ⬆️ 👂
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Der #VCÖ führt anlässlich des Schulbeginns in 🇦🇹 eine Erhebung durch, wie sicher die Schulwege der Kinder sind.
Das Melden ist wie gehabt sehr einfach und niederschwellig.
Wenn du dich dran beteiligen willst, hier ist der Link:
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Educational Breadboard Synth Module https://hackaday.com/2024/06/15/educational-breadboard-synth-module/ #experimentation #MusicalHacks #educational #audiosynth #audiohack #DIYsynth #eurorack #vco