Controlling Buchla with Monome

[caelmore]

@zebra, any thoughts or suggestions?

[mlogger]

I think the Buchla blade is the best way to go but you would still need a 4 channel custom build for the conversion from euro to Buchla from Synovatron also. I have a 200e system and Monome system and thinking of doing the same thing. Synovatron does do 4u Buchla size panels also. I saw a 4 channel one recently in Buchla format specifically for use with an Ansible but the Ansible was not part of the panel.

[x2mirko]

Wouldn’t a firmware patch that changes the scaling of the outputs be the easiest way? As far as I’m aware, all the monome modules use a voltage lookup table (defined in music.c), so if you’d calculate the correct values for 1.2V/o scaling and compiled your firmware yourself using the changed music.c file, your modules would just output buchla-compatible voltages to begin with, right?

That might take a few hours to figure out if you’re not comfortable with this stuff, but seems a lot simpler than using some external scaling solution. Not sure if I’m missing anything, as I don’t have any experience with monome-module-development, but it seems like the best solution to me. Maybe someone with more experience can chime in?

[alanza]

well, this approach would require keeping a Eurorack case next to and grounded with the 200e, since there are size differences, power differences, power connector differences and jack differences. possible, but probably a hassle.

I guess this also means something like the (long gone) Make Noise Format Jumbler isn’t gonna cut it

[mlogger]

Here was the Synovatron build I mentioned earlier for Ansible. It doesn’t solve the problem of having Ansible in the same place - that’s why I think the blade thing plus a Synovatron euro 4 channel custom. The only issue is I think you could only get 1 Ansible and 1 converter in that 20hp space unless you go for the bigger 40hp Polyglot blade. Looking at the photo I don’t think there would be room to squeeze an Ansible in behind the 4u custom panel but you could always ask.

This is Nathan Moody’s 20hp Blade - the issue here is its not 4 channels and he’s using a different sequencer but it gives you an idea of size

[deltaphoenix]

@ x2mirko & Alanza

I thought there should be a solution for the pitch in the code. The issue would be 5v gates, Buchla takes 10v pulses instead. I had wondered about that option with CV processing to get the 5v to 10v.

I am okay with dragging a little dorpfer beauty case if necessary. I do have a stand alone Format Jumbler that is pretty large.

[deltaphoenix]

Thanks for those ideas and pictures. I will reach out to Synovatron and see what a custom adapter will cost. I do like that via a Blade with a Synovatron an Ansensible would actually be in the Buchla case.

Any thoughts on using a Norns via usb to midi Din cable to my 225e? That could be a secondary way to sequence and use the Ansible with the Arc4 if the Grids is connected to the Norns (and vice versa).

[mlogger]

I don’t have a 225e as i use the 250e and 223e and looking at Norns, in theory it should work. I would be more inclined to use MLR / Earthsea with Norns and Kria / Meadowphysics / Levels with Ansible. Use a different sequencer for a different song live and hotswop Grid/Arc as needed. Tehn did mention Arc apps will be coming on Norns. I personally wouldn’t sell the 223e as you would never get that amount of tactile control from any other controller or sequencer and imho it ties the system together as a playable instrument.

It’s also worth noting that a Disting mk3 and mk4 has a Euro/Buchla converter but only for one set of cv/gate http://www.expert-sleepers.co.uk/downloads/manuals/disting_user_manual_4.6.pdf

Disting - E-7 Euro to Buchla converter.
This algorithm is for interfacing Eurorack (or more generally, any analogue synths using the 1V/octave standard) with Buchla synths.
Input X/Output A convert a pitch CV from the 1V/octave standard to the 1.2V/octave standard.
Input Y is a gate input, triggering when the level exceeds 1V. From this, a Buchla-format combined gate & trigger is generated from output B. This is a 4ms pulse at 10V, followed by a sustained gate at 5V.
The Z knob/CV provides a tuning control, with a range of approximately ±0.5 octaves.

[deltaphoenix]

Yeah, I really enjoy the 223e after I set it up right. You are correct though, nothing like it and it ties the whole system together.

Good to know about the Disting, now they just need to release the mk.5 so the 3s become cheaper

Yeah, that performance usage you described is pretty much what I see in my head too.

Thanks!

[kuorinki]

I am still waiting to get my hand on Grid + Ansible, and I also have no experience with music easel / 208r - but got curious if one could use somehow Grid + Ansible to interact with 208r? I am pretty sure I would not enjoy too much in the long run tapping my fingers on that music easel keyboard thingy.

[lbet]

Buchla and Euro have different voltage standards.

To make them interact properly you would need to use a conversion module, there are a few for Euro.

Other than that the interaction should be nice. But I should note, the 223e is the best form of interaction with a Buchla system. You should look at the Buchla Easel-K.

[kuorinki]

Yes, this is the first thing that popped when I started searching https://www.schneidersladen.de/en/synovatron-cvgt1.html

Also I read that one could calibrate 208 for 1v/oct…

Would love to see a video of Grid + 208 jam.

[myecholalia]

But I should note, the 223e is the best form of interaction with a Buchla system

Never played a 223e, but the Keen Association Model 220 is no slouch either.

[deltaphoenix]

I am sure the Keen 220 is awesome; I am a fan of everything Alex has made for the Buchla ecosystem. He also has some amazing things in development too.

Regarding Monome and Easel - yes, Synovotron is probably your best bet. I have a custom panel being built from Synovotron that will allow up to 2 Ansibles to control my Buchla. I am not the only one that has/is going for a custom solution from Synovotron.

[mlogger]

Heres my 14hp Ansible / Buchla solution currently being built.
It will hopefully sit next to an Ansible in a Buchla blade.

[kuorinki]

Please share some videos once you got the system rolling! That sounds exactly something I’m looking for…

[kuorinki]

Also, do you have the buchla blade with ansibles installed on LEM-208 or something similar?

[mlogger]

I don’t have the converter yet but as a demo I did try a 2 channel version using a CVGT1 for 1 channel and a Disting Mk3 (Buchla/euro algorithm) mounted in a lunchbox for another channel with an external Low-Gain converter box. The Ansible is mounted in my eurorack isms case.

This is ansible Kria

This is ansible earthsea

[kuorinki]

Oh wow, this souonds amazing! So jealous of this set-up.

[eyeiaye]

So how might I use Norns with my buchla? Very interested in this but have no idea how workflow might work. New to all this conversion conversion