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Korg Monotribe in CV/gate mode [Video demo added!]
MUFF WIGGLER Forum Index -> Eurorack Modules  
Author Korg Monotribe in CV/gate mode [Video demo added!]
radiokoala
Okay, I updated my monotribe and DIY'd a CV/gate sending cable, and here's how it sounds:

[s]http://soundcloud.com/radiokoala/monotribe-fun-times[/s]

Sputnik DWG as a modulator. Osc1 sends CV/pitch information, and Osc2 gates the envelopes. In other words, it is frequency modulation by Osc1 since voltage is continuous, and it makes it sound more interesting than sending note values. Some cross-modulation between two oscillators as well.

For receiving CV I used Hz/V mode, and for gate an inverted trigger mode, because in usual mode I had no luck triggering the gates with a VCO. (Even though with square waveforms not in CV/gate mode it worked!)

Oh, and almost forgot: yes there is delay/reverb, for added liveliness, but it is an output of a monotribe only, nothing else. (No VCO to audio in or anything...)

Regarding the patch itself, overall it looked something like that:



Enjoy.

w00t
felixer
radiokoala wrote:
For receiving CV I used Hz/V mode, and for gate an inverted trigger mode, because in usual mode I had no luck triggering the gates with a VCO. (Even though with square waveforms not in CV/gate mode it worked!)

nice sounds thumbs up
old/original korg gate was 'switching', like moog: at 0V the env starts. modern/normal gate in expects 5V. so it seems your clock-osc does a nice 0V but not 5V Mr. Green you could check with a voltmeter ...
if you are into diy it would be easy to make some cmos osc. those can go up to 10V if you like hyper
radiokoala
felixer wrote:
radiokoala wrote:
For receiving CV I used Hz/V mode, and for gate an inverted trigger mode, because in usual mode I had no luck triggering the gates with a VCO. (Even though with square waveforms not in CV/gate mode it worked!)

nice sounds thumbs up
old/original korg gate was 'switching', like moog: at 0V the env starts. modern/normal gate in expects 5V. so it seems your clock-osc does a nice 0V but not 5V Mr. Green you could check with a voltmeter ...

Thanks!

They all do nice 0V, it's a lesser of all efforts to generate a 0V voltage hihi But really I think it's +5V/-5V, or what voltage VCOs usually have. No malfunction, that's for sure, but out of interest I will check it when there's a tester around.

BTW, just a few minutes ago uploaded a vid (continuing my CV/gate explorations thumbs up)

felixer
radiokoala wrote:
it's a lesser of all efforts to generate a 0V voltage hihi But really I think it's +5V/-5V, or what voltage VCOs usually have.

never assume anything. not in euroland Mr. Green who talked about 'assumption being the mother of all fuck-ups'? often it's 5Vpp, so -2,5V-+2,5V ... sometimes more, sometimes less hmmm..... seriously, i just don't get it
and you 'd be surprised how difficult it can be to get 0,000V. it's called 'offset' and not a welcome guest to amplifier-parties Mr. Green
you should def check:
-george duke live on stage with frank zappa using his arp odyssey's s&h to accompany/drive the 'idiot dancing contest'.
-brad pitt in '12 monkeys' (movie by director terry gilliam).
lol
radiokoala
felixer wrote:

you should def check:
-george duke live on stage with frank zappa using his arp odyssey's s&h to accompany/drive the 'idiot dancing contest'.
-brad pitt in '12 monkeys' (movie by director terry gilliam).
lol

haha! made me laugh Mr. Green

'idiot dancing contest' sound like fun, and by the way I have a Zappa t-shirt (lumpy gravy)...as for voltages, I sure will check them, now I'm curious myself. razz
crippletoe
hey radiokoala,
can you explain a little what exactly did you do in order to be able to send in cv/gate signals?
did you have to modify the monotribe or is it some new firmware feature?
oscillateur
It's a new firmware update. No mods needed.
crippletoe
is that the 2.0 firmware update? what possibilities does it give exactly? couldn't find anything on the korg site...
oscillateur
It's OS 2.11 but it's only on the Japanese version of Korg's website so far (probably hasn't been translated yet) :

http://www.korg.co.jp/Product/Dance/monotribe/version2.html
http://www.korg.co.jp/Support/Download/Update/monotribe/

You basically get CV/Gate input using a stereo minijack in the Trig In input.

Edit : I think it's actually a 4 poles mini jack that is needed
radiokoala
Yes, correct, a 4-pole mini jack. I DIY'ed my own, it's two mono patchcords on one side and a single plug on the other that is inserted in the monotribe.

When you download a firmware, despite manual is in japanese, inside pdf there is a pinout. Tip is for gate, ring 2 CV, sleeve is ground. Ring 1 is not used, but I have a madman idea that maybe in the future they will add a filter CV?! MY ASS IS BLEEDING

Regarding the possibilities of new firmware, in 2.0 there is a plenty (sample&hold, 16 steps for synth...etc), and 2.11 only adds CV/gate mode.

Oh, and last: update procedure is identical to 2.0, just read it in a guide that comes with 2.0 (it's in English). To enable CV, after updating you need to power on monotribe holding SN and GATE. Then press step 1, it turns on CV/gate mode. Last, to save settings press REC. Switching between Hz/V and V/Oct mode is step 2, and trigger/inverted trigger response is selected by a step 3. That's pretty much it. thumbs up
crippletoe
wonderful!
of course a standard camcorder has the CV ring wired to ground so those cannot be easily used... puh... still i am so impressed by KORG for doign this!
in fact, i suspect that they did not come out internationally with this yet because the next update should (hopefully) feature a CV/GATE OUT functionality (coordinated with the release of the new ms20 of course ...)

grin

either way, GOOD NEWS!
rockwoofstone
I've just thrown together the appropriate cable and performed the update, and there's a couple of minor changes you need to make to radiokoala's process to get this to work with standard Eurorack kit.

Assuming you've successfully installed the Monotribe v2.11 update, go into the appropriate setup mode as radiokoala describes by turning on whilst pressing SN and GATE.
You need to make sure that step 1 is lit to enter CV/GATE mode.

This is when things need to be a little different....
Set step 2 and 3 to be UNLIT, which selects V/OCT and the appropriate gate mode for Eurorack (i.e. high gate = note on).

You finally need to calibrate the Monotribe to your input. Easiest way is to use a MIDI module in your rack, so you know exactly what you're feeding in....

Set the VCO Octave on the Monotribe to 16' (I can't tell if you need to do this now, but as it is recommended for when you are doing CV/GATE playback, you may as well do it here just in case).

Select KEY or NARROW range on the Monotribe.

Play note C4 on your keyboard, ensuring your new cable is plugged into the Monotribe (i.e. CV & GATE are both being sent). Whilst holding that note, press PLAY. The LED on the PLAY button will light for around a second then fade out.
Next, play note C5 on your keyboard, and again, whilst holding that note, press PLAY on the Monotribe and wait a second for the LED to fade out.

At this point, you have successfully calibrated the Monotribe, perfectly aligned with an exact 1V/Oct range, and effectively tuned to your system (assuming standard tuning ;-).

Press REC to save the settings, and you're ready to go.

Hope that helps!

One final thing to note is that the MT doesn't appear to be able to respond to any form of envelope, but is limited to it's own three internal envelope shapes, with the second and third picking up a sustain stage in line with the gate length you send. The first envelope has it's own decay, but that cuts off abruptly when the gate closes. Still, better than nothing!
rockwoofstone
Of course, as an addendum to the above, that all only applies if you want a "vanilla" approach to controlling your Monotribe. If you want to be somewhat crazier with your sounds, the videos radiokoala is churning out have some great approaches in them!
radiokoala
rockwoofstone wrote:
Of course, as an addendum to the above, that all only applies if you want a "vanilla" approach to controlling your Monotribe. If you want to be somewhat crazier with your sounds, the videos radiokoala is churning out have some great approaches in them!

thumbs up Thank you!

You know what else I'm thinking -- if sometime cv/gate out will be added, then you could also have a vanilla chromatic quantizer in the face of monotribe smile In KEY mode I believe any incoming voltage is quantized to the nearest semitone.

But that's not everything - you could also use monotribe to transpose your sequences! So you could send the same CV to a VCO and to another VCO thru monotribe, where you will use octave selector and transpose the incoming stuff octave up/down, or more. If you have a spare VCO, you could give it some sub-oscillator credentials for example This is fun! That's very nice, there's not even many modules (quantimator comes to mind) that allow you transposing stuff...

As you see, I still have some ideas, alright hihi
rockwoofstone
Hehe!

The quantising idea got me thinking that as the facility is there to calibrate the MT, you could force some further transposition which isn't full-octave focussed by calibrating at something other than C4-C5.

In other words, you can set the 1V/OCT scale to be whatever you like by just substituting C4-C5 calibration to be whatever you'd like 1V to represent, based at whatever note you desire.
radiokoala
rockwoofstone wrote:
Hehe!

The quantising idea got me thinking that as the facility is there to calibrate the MT, you could force some further transposition which isn't full-octave focussed by calibrating at something other than C4-C5.

In other words, you can set the 1V/OCT scale to be whatever you like by just substituting C4-C5 calibration to be whatever you'd like 1V to represent, based at whatever note you desire.

And last, you could just use it as a simple offset. At 16' mark it is initial voltage, but since the selector goes down (and up) to 64' and 2' respectively, there are possible offsets of -2, -1, +1, +2, and +3V, which could come in handy. (Say, you are using low-amplitude LFO to scan through wavetables, so you patch it to monotribe and with octave selector then can choose the different waves to morph between!)

Things like that. 8_)
hamildad
when using the Monotribe MIDI mod, there is significant clicking as the internal envelope gate cannot sync with the incoming midi note on/off, this means its fine when filter resonance is high, but dial it down and the clicking is noticable and unwanted.

How is the monotribe when using the CV/gate for sequences/keyboard?

sounding nice?

cant believe the functionality that this unit has, I had written off another firmware update after 2.0.
rockwoofstone
@hamildad It can be a bit clicky, very dependent on the envelope selected, so judicious setting of the knobs is in order to minimise that. I got some reasonably usable output.
phono1337
awesome thread guys, just added cv/gate jacks to mine, quick video



some pics of the solder points on my blog thumbs up
Cozmic023
Wicked news guys, I've still got my thoughts on getting a desktop module like the Monotribe.

They are very tweakable, and can be modified for midi. (And now CV)

I'm still undecided, but i'm looking at either:
Korg Monotribe
Doepfer Dark Energy (and maybe Dark Time too?)
MFB Nanozwerg
MFB Dominion X

I do own a Blofeld desktop synth (which i love, and is great sounding.) But want something CV synth based that can be used with the modular.)

Cheers
Lee

Edit: Bought a Monotribe this week, great little box!! SlayerBadger!
darenager


I also made a video documenting how to scale for V/Oct


The cool thing is it stores the setting once done, gotta love the Monotribe SlayerBadger!
felixer
Cozmic023 wrote:
I do own a Blofeld desktop synth (which i love, and is great sounding.) But want something CV synth based that can be used with the modular.)

just as a suggestion, you could go the other way around and use cv to control your blofeld. doepfer makes the a192-2 for (pitch) cv/gate->midi and the a192-1 for cv->midi controllers (although you can also send note-on etc. with it). i use that one to control my digital mixer from the modular and it works like a charm. midi is slow, so you obviously can't do a lot of things you can do with cv->cv, but for 'general shaping' it's good enough .... to get something like the blofeld in euro you'd need to get the e350 morphing terrarium. plus a pretty versatile filter ...
hope this helps you to make up your mind zombie (hides) Mr. Green
mfk
Whats about trigger-in while using CV/Gate-in?
Seems to be dysfunctional.
If I use the 4-pole-plug for an extern seq., the trigger-in funtion does not work. (After hitting play, the built-in seq. runs independent)
That's awful. So I have t buy the midi-in-modul to get synchronized drums.
Please correct me if I am wrong!
Cozmic023
Thanks for the tips Felixer. I do have a 190-3 Midi / USB interface, but it's been used as USB in Ableton 8 Suite. (Soon to be 9 next week!! SlayerBadger! )

Since i started this eurorack craze last year, my wishlist is getting longer!! lol (And yes the E350 is on that list too!!)

I've now got to the point where my case is full, but then a shuffle of modules will help. And by selling something first creates funds to by new modules! hihi

Cheers
Lee
robman84
mfk wrote:
Whats about trigger-in while using CV/Gate-in?
Seems to be dysfunctional.
If I use the 4-pole-plug for an extern seq., the trigger-in funtion does not work. (After hitting play, the built-in seq. runs independent)
That's awful. So I have t buy the midi-in-modul to get synchronized drums.
Please correct me if I am wrong!


Wonder what the unused ring is for on the 4-pole? Could it be sync maybe? Might make up a quickie cable.
steevyhead
hey guys, im new to this forum, and new to the world of CV etc. Anyways, i just picked up a monotribe, and updated it to 2.11 and i cant seem to get it to play nice with my minibrute. I got a 3.5mm 4 pole cable male, each end is 4 pole, and im plugging it out from gate out on the minibrute to the sync in on monotribe. Turning monotribe on and holding SD and gate time, then choosing step 1 on , holding c4 then play then c5 then play, and finally record. the minibrute will trigger the monotribe but it will only play one note. the same note c4 over and over again.

when i plug it into pitch out it doesnt trigger the monotribe consistantly its glitchy and still doesnt control the monotribes notes correctly. Am i using the wrong cable? should it be 2 4 pole ends on one side and one on the other? does the minibrute not work with monotribe? any help would be greatly appreciated.

ps.

hi guys my name is steve.
radiokoala
Hi Steve,

your cable should only have one 4-pole jack, the one you plug into the monotribe. On the other side you should have not one 4-pole jack but two mono ones. For use with the minibrute you will plug one to gate out, and another to cv out. (Gate is duration of the note held, and CV is its note value. Of course it doesn't work now, because how you described it monotribe only will recognize one signal -- either gate, or CV.)

Hope this was helpful enough and welcome. SlayerBadger!
steevyhead
radiokoala wrote:
Hi Steve,

your cable should only have one 4-pole jack, the one you plug into the monotribe. On the other side you should have not one 4-pole jack but two mono ones. For use with the minibrute you will plug one to gate out, and another to cv out. (Gate is duration of the note held, and CV is its note value. Of course it doesn't work now, because how you described it monotribe only will recognize one signal -- either gate, or CV.)

Hope this was helpful enough and welcome. SlayerBadger!


this was SUPER helpful and thank you for the quick reply, i really appreciate it. Ive played guitar bass and drums for about 15 years, but got into synths last year and im HOOKED. i know midi fairly well now, but i dont have any really old gear, or modular gear so im kind of lost, but i understand about needing to have the gate out, and the cv pitch out, into the monotribe. Do i have to MAKE a cord like that? I bought the 4pole 3.5 mm cord on ebay because im not very good at making cords, even at work when i have to make cat - 5 cables i usually pawn the job off to someone else.

is there a place where i can get two mono to one mini jack 4pole? can one of you lovely people make one and ill gladly pay you for your time and supples?

ps thanks for the warm welcome.
radiokoala
Yea, there are two guys who can offer you ready-made solution:

https://www.muffwiggler.com/forum/viewtopic.php?t=39099&postdays=0&pos torder=asc&start=540

Those are breakout boxes though, not a cable. You will only additionally need two patchcords (those we use in our eurorack modular synths) and then you'll be ready to go. thumbs up
pfaffenberg
You know, I've been on the Muffs here for a few weeks pretty regularly - scouring the Euro threads for info/inspiration on what to nab to finish up my 12U (for the time being, at least)...

Anyhow. I've had a monotribe completely torn apart and just sitting in a pile of pcbs, bent toy keyboards, and "half-builds"....an area I affectionately call "ICU"..it's like these projects are just in a coma or something.lol

So I'm on dinsync's site checking up on some things, and I end up back here reading up on this update. Like others, I'd written off Korg actually caring to update this thing further.

Pretty cool stuff. Maybe I'll actually hack the drum outs, decay mod and then "update" the thing.

The monotribe may make a full recovery, yet - and then some! Fun stuff. SlayerBadger!
Cozmic023
Hiya Peeps,

Well just bought a Monotribe today, more tweaking toys!! lol

Also picked up a PSU too, as i'm sure batteries don't last long!

And picked up a CV box from darenager too.

Let the tweaking commence!! SlayerBadger!

Cheers
Lee
Suineder
Cozmic023 wrote:
Also picked up a PSU too, as i'm sure batteries don't last long!

Oh, you might be surprised. The batteries inside mine right now have lasted for months and the charge is only down by a little, and I've seen a couple other people here with a similar experience. Monotribe is actually fairly efficient with batteries.
Cozmic023
Cheers Suineder for the info, that helps a lot! w00t

I have been light on usage with the Monotribe, as most things i use that are battery powered usually end sooner rather than later!! eek!

I've now got the PSU, and the CV box / Midi box from Darenager now.

Still haven't had any playtime to get MT & modular, to get both talking to each other.

Cheers
Lee
ezehagar
hamildad wrote:
when using the Monotribe MIDI mod, there is significant clicking as the internal envelope gate cannot sync with the incoming midi note on/off, this means its fine when filter resonance is high, but dial it down and the clicking is noticable and unwanted.


I'm having the same clicky pop sounds. Is this just a limitation?
I've made the firmware updates and soldered the cable assembly and it all works. Except the pop when the gate opens and closes. Is there a way to get rid of the pop?
Cheers
Z
Matze
Hello All,

this is my first post and I admit to being what is often referred to as a noob in certain circles. (Not a total noob, just a noob.)

For the last few days I've been trying to use the V 2.11 Monotribe CV functionality with a QuNexus controller using the KMI CV Cable Kit – to no avail. I've viewed a number of videos and can't really figure out why it's not working.

Seeing as you guys here are all knowledgable to a degree that puts me to shame I wonder if you might help me out and point me in the direction of a thread or a resource that has a truly idiotproof step by step tutorial.

What cable goes where etc. what buttons to press on the Monotribe in Gate CV Mode...


Thanks very much and a fine week to you all,

Matt
hamildad
Are you sure the cable is right? Are you using the proper qunexus cable? I use a Nokia AV one.

Have you downloaded the right firmware and set it up to take in CV/Gate instead of Sync? it defaults to taking sync in that jack unless you change the settings.

have you calibrated it? you need to play an octave, and then store that.

even if I plug in the gate to the CV, I get some noise, so are you getting anything when you plug it in??

and have you got any eurorack to test that out on? or have you just got a monotribe?
brucethehoon
This is fantastic! I've only just started modding my monotribe, and it's been far easier than I expected thanks to folks like you. smile
zaphod betamax
Correct, if you declare that C=ab, and then transpose the MT up an octave or so, you get a third. If you declare that C=F, then transpose up an octave or so, you get the fifth.
Coolness


rockwoofstone wrote:
Hehe!

The quantising idea got me thinking that as the facility is there to calibrate the MT, you could force some further transposition which isn't full-octave focussed by calibrating at something other than C4-C5.

In other words, you can set the 1V/OCT scale to be whatever you like by just substituting C4-C5 calibration to be whatever you'd like 1V to represent, based at whatever note you desire.
ghostly606
Looking for an adaptor between eurorack and the monotribe, would one of these work?:

http://www.ebay.co.uk/itm/3-5mm-Audio-Headset-Mic-Y-Splitter-Cable-Ada pter-TRRS-to-2-TRS-For-Tabs-Laptops-/322355658226?hash=item4b0de4fdf2: g:FUIAAOSw5cNYNvDd
zaphod betamax
Also, Monotribes can be programmed to play Micro (or Macro) Tonal.
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