Axoloti

Hah, that would be one brave mod!

I have an axoloti board lying around - haven’t got any proper idea what I should turn that into. Luckily I don’t have an Octatrack :wink:

The AxolOT

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Oooohhhhh… I like that, I’m going to nick that <3

How decent is axoloti as an FX box?

I’m happy with it. Now it has only one patch in it made of MI clouds code which was ported some time ago. I use it in live pa situation as freezer-granulator / grain delay and i also mapped it’s controls to my midi controller

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Axoloit II is nearing the end of development (unfortunately for now that means no more Axolotis in stock, since the last batch of the original is sold out). Apparently it’s more or less the same thing with the same price but way more RAM and about 4x the CPU power. Mine is pretty underutilized right now but when the new one comes out I think I’m going to grab one anyhow, and dedicate the original to being a USB-MIDI host and MIDI processing box, and start underutilizing the v2 for synthesis experiments instead.

One downside for OT users is no more onboard DIN MIDI. It’s still there but it’s on pin headers now (to make room for the bigger CPU) and you have to get an off-the-shelf third party breakout board (or design your own) to actually use it. On the up side, there’s some chtter on their forum (aklthough it likely won’t actually happen, but IIRC the person talking about it is the same one who developed this https://zrna.org/ so you never know) about oe of the long time users who is a hardware developer working on an FPAA daughterboard or something - which would potentially mean being able to create analog circuits on the fly inside the Axoloti patcher.

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I read it was possible to install Clouds or Elements on Axoloti’s. Maybe better with V2 ?

k, we need to be careful here … to not get confused…

the discussions around a possible new axoloti , are for a board by a different developer (guy behind https://zrna.org) NOT Johannes/Axoloti… - so it is not an Axoloti 2 (!)
it will be something else… talk of it being derived/compatible with Axoloti, but i guess we should wait for release before jumping to too many conclusions.

given its not related to axoloti, this is NOT the reason axoloti is out of stock,
johannes is just one guy company so he doesn’t keep massive inventory, so fills up when they run out and orders a new batch of boards etc…
sometimes this can take a while, because the fab company has a longer than usual lead time on certain components.

we do NOT know what Johannes has been up too, he has not said anything about what he is doing on the hardware front - and he has been pretty quiet for a long time.

however, he has just released Axoloti 2.0 software/firmware for the existing axoloti board.

it is …
the current Axoloti uses the same STM32F429 as elements (i think clouds is smaller?), so can easily run clouds/elements… and in fact with more memory than the MI module.
so a new board wont really change much, I doubt it’ll sound better - without code changes,
perhaps run multiple instances, but that may require changes too.

note: I was the one that ported clouds/elements to axoloti :wink:
I should also point out that the new Axoloti 2.0 OS will need some changes to these objects, as there is a new module structure which allow us to move some of the MI code out of the firmware, into user space… which means I’ll be able to do some changes to it, without having to release a new Axoloti firmware.
also… I now have a eurorack system with MI modules, so i can finally review the code and functionality of the axoloti versions to ensure they are closer to the original eurorack modules.
( I coded them blind when I original did this port!)

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We’re lucky to have you here with OT ! Thanks !
Axoloti one day I hope. :slightly_smiling_face:

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I’m lucky to have access the knowledge, skills and techniques you have all shared here for the OT :slight_smile:

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My cunning plan to put an axo inside my OT is gathering momentum.

Happy Xmas Technobear - your work on orac and other platforms is phenomenal and i’ve Just taken delivery of a Fates for my holiday project!
Not least because it will be yet another Orac installation on a couple of devices i’ve enjoyed building.

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I owe you one, then. In fact, I owe you quite a few. If you end up in Brussels one day, beers are on me :beer:

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Thanks for the clarification! I knew the ZRNA guy was talking about a potential FPAA daughterboard but I thought the Axoloti 2 prototype was something Johannes was working on. My bad. I’ve been pretty out of the loop with Axoloti for the last couple years. I happened on the thread about a v2 while I was at work about 3 weeks ago and didn’t have time to go through all 400+ posts so I read the last 20 or so and thought the 2.0 software was coming out in tandem with the new hardware, rather than the hardware being an independent project.

Looks like the Axoloti itself is back in stock now, too!

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Awesome thanks for this update! I have not had time to check any forums until recently and was not aware of this.

Thank you :clap:

Interesting! That’s good to know as my next axo is going to be dedicated to an MI module. Tried to panic buy one when I read the initial post yesterday but don’t really have funds until after the festive period, so glad to hear there’s no urgency!

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Cool, yeah I know it’s a bit confusing.

We’ve really no idea what Johannes has up his sleeves for hardware ,his not said anything.
I’d personally not be surprised if he also has a H7 based axoloti planned.

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Total offtopic: I’ve come to think of The Bear as this benevolent watcher of all things GAS, keeping all of us from totally going off the rails by spreading his open-source magic.

And whenever he surfaces in some new forum I frequent, I like to do a little ”all hail technobear” in my mind

…which is my odd way of saying you’re a force of nature, thanks for the amazing things you do :slight_smile:

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Anyone who was surprised to find Axoloti still not supported on Catalina managed to take the alternative route of getting it running on Linux?

I’ve followed the instructions (I’m on Pop_OS) but getting missing compiler errors (and no instructions on how to install the missing compiler) and also it’s failing to recognise the board (no USB device type of error)

I don’t mind hacking around with free or open source stuff but I’ve just paid good money for a new Axoloti board and finding out it’s not supported on my 1st choice platform, only to then discover that the support on second choice seems sketchy at best, my first impressions aren’t great.

:unamused:

Oh, magically it now sees the board. This is the error I’m getting about the compiler. Problem is I can’t only find it as a tarball. Installing with APT would be nice but how do you find the name of the package to install?

"/bin/sh: 1: arm-none-eabi-g++: not found
error: compiler arm-none-eabi-g++ not found in path=/opt/Axoloti/app/platform_linux/bin:/home/neilbaldwin/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin, not installed?
Please download and install GNU Arm Embedded Toolchain 7-2018-q2-update
via your package manager or from https://developer.arm.com/tools-and-software/open-source-software/developer-tools/gnu-toolchain/gnu-rm/downloads
/opt/Axoloti/app/env/test-env.mk:25: *** Compiler not found. Stop."

After a few more hours of digging around I managed to find the package install for the arm-none-eabi compiler error.

If anyone else is struggling with a modern linux/ubuntu distro (Elementary or Pop_OS) then it seems this step:

sudo apt-get install -y lib32z1 lib32ncurses5 lib32bz2-1.0

is probably not necessary as those are already installed. I did find some info on installing the correct architecture for these by adding ‘:i386’ to the end of each package name,

To install the compiler and dependencies see this solution:

https://community.arm.com/developer/ip-products/processors/f/cortex-m-forum/8993/installing-arm-gcc-toolchain-on-ubuntu

though I found it only necessary to install the first package (‘sudo apt-get install gcc-arm-none-eabi’)

Hope that helps someone else out.

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I mounted mine to a breadboard using pin header soldered into gpio holes, added 8 pot breakouts, 3 tactile switch breakouts, 2 slide switch breakouts and 8 LED array breakout:


I will use it for prototyping a few things, then if anything warrants building into something more permanent I’ll get proper boards made, and additional axolotis.
I do like @mokomo crazy idea of building one into OT (or the zrna akso) so might look into this myself too, maybe in the Deluge as well.
Initial few ideas for standalone stuff:

  1. a nice drone synth.
  2. an acid groovebox with drums and battery power.
  3. a simple sampler for capturing lots of samples in quick succession - by threshold, midi note, etc, trim and save to SD card for use in other samplers, possibly a oled screen and qwerty keyboard (not sure if that is possible?) The reason for wanting this is that I don’t see any sampler which can do this type of stuff quick and without fuss.
  4. Some fx things, mainly weird shit.
    It remains to be seen if my capabilities match my ideas though, so failing all this I’ll make a dust collector :laughing:
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Weird removal of posts

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