#21

its a nice idea, but the latency is i suspect not going to be good on a rPI, thats why Johannes chose an RTOS.

I do have to put my hand up here, and admit Ive had axoloti running on another platform (within the main axoloti code base) , and Ive been in discussions with Johannes about if we release it or not.
I approach Johannes because I was in two minds, he made the source code open source , so he derives no money from the (considerable) continued development he puts into it… he only makes ( a bit) of money from the hardware, so if people buy the other platform (or PI) instead, he makes no money, is this the best way forward for the community?
Its a tricky one, which is why I gave this decision back to Johannes.

(I also think, strongly, that sinneb should not be releasing this separately, but working with Johannes… dividing the community into axoloti users and pi users will not benefit anyone)

anyway to finish a bit more lighthearted, I’ll chuck this here… (a bit of irony, given the above ;))

3 Likes
#22

Yeah, I hesitated to post this, intuiting what you say about how Johannes derives some income from all his hard work.

Not intending to encourage anybody to pursue this.

On a meta level, it’s interesting to see how it’s getting easier to run software modulars on inexpensive hardware, and I’d really like to see more of these things sprouting 1/8" jacks with some unipolar <-> bipolar voltage conversion, for integration with eurorack.

1 Like
#23

oh, not at all … this is the nature of open source, its open :slight_smile:

I hope the developer contacts Johannes… Johannes is really open to such things, there really is no need for this to be a separate project, there is a much better/easier way to do this, that will benefit the combined community of axoloti and pi users.

#24

@TheTechnobear fwiw, this discussion pushed me firmly over the edge to finally start saving for an Axoloti. looked at compiling this onto my Pi and ¯_(ツ)_/¯ would rather have the dedicated I/O and hardware that Johannes has worked to provide

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#25

Hi sinneb here, porter of Axoloti to the rpi zero. Thx for the mention, and thanks for the insights. I will contact Johannes today to talk about the Axoloti rpi zero port. The port is pure curiosity, not intended to harm income from the sales of Axoloti boards - it is intended as a totally different application of a great DSP engine and platform as a whole. Will talk it through with Johannes!

6 Likes
#26

Does anyone have any idea/experience with a MIDI synced ping-pong delay running on Axoloti Core?
It seems like there are a couple of them available, I was wondering if/how well they work and in general what the sound quality is like :slight_smile:

#27

Gave these MPE patches, in the community library, a try.

They sound great, up to a point, but I’m having some weird MIDI glitches where one of the voices is suddenly playing a chord that I didn’t intend, and then any note starting on that pitch just sort of triggers a chord from there on out.

Tested on two boards, with several controllers. Seems pretty consistent, regardless what I’m using. (I used Seaboard Block, as well as Linnstrument, plugged directly into Axoloti’s USB)

That’s, like, with no custom code on my part. In fact, I can film a quick demo showing just how little I’ve actually done:

(Not shown, if I keep playing a while, which note is triggering the chord will change, so I suspect it’s more voice number than pitch based.)

http://community.axoloti.com appears to be down right now, or I’d be asking there.

Wondering what I should even troubleshoot. Can I revert back to an older firmware? Should I be slowing down the incoming MIDI stream, maybe? I’m at a loss.

#28

hmm… there should not be any general problem.

when I developed the MPE support for axoloti, I tested with the Eigenharp and Soundplane , and had no issues. (the ‘only’ 2 mpe controllers I have )

Linnstrument - there were some initially problems with the Linnstrument, but Geert fixed an issue in the Linnstrument firmware - which I thought had resolved all issues with it, and as you can see TheSlowGrowth wrote a series of patches based on my MI objects - so I assumed he was happy with it.
So, I guess check that you have the latest firmware on the Linnstrument.

Roli - I don’t think there were any reported issues on this. as you can see Abhoth (aka Tic Tic), was using it http://community.axoloti.com/t/axoloti-enclosure-for-the-roli-blocks/3855.
Ive seen a couple of ‘tweaks’ that were made, due to Roli not resetting timbre correctly on note-on, but that was a while ago so they may have fixed this.
(but your issue doesn’t sound like this, it sounds more like note-off going astray)

unfortunately, Ive neither a Roli nor Linnstrument, so can’t test with their latest firmware.

I guess, Id suggest you post on the Axoloti forum, and perhaps tag Abhoth and TheSlowGrowth, to see if they are having any issues , and what firmware they are using, and any setup differences.
(everyone will be on the same axoloti firmware, 1.0.12)

note: axoloti forum is up n running for me, perhaps a temp outage, it very occasionally runs out of disk space , due to backups, so Johannes, has to clear these out, and reboot.

1 Like
#29

Wait. Axoloti supports soundplane? Why didn’t I know this?

(because I never thought to ask)

Pretty sure my firmware is up to date, but forcing default settings on the controllers isn’t a bad idea.

(I bet I’m not reserving channel one for global messages…)

I’ll test that in a few hours, and hopefully not have to bother folks on the axoloti forums now that the site is back. But just in case, I’ll link myself a relevant thread to post in, so I can find it again:

#30

Yeah, okay. Chalk this up to user error. (resetting everything fixed the Roli. can only assume it will for Linnstrument as well)

1 Like
#31

ah, yeah, mpe means anything on global channel goes to all channels, so that would ‘mess things up’ :slight_smile:

glad you got it working, its a fun combination.

(soundplane : you cannot connect directly, but I use either a laptop or rPI for the interface, then connect this to the axoloti… quite like this with the rPI in particular)

2 Likes
#32

I feel the Axoloti really has some great potential. There are enough users to keep it growing steadily (at least on the software side) and some folks making some dedicated hardware instruments for it.

That being said, it’s not perfect. It’s definitely an improvement from the Nord Modular I used to own. The very fact that I can program my own module FROM SCRATCH is the best thing about it. How you can use it as a usb -> midi din host is probably the second most awesome feature.

@TheTechnobear has been schmearing their bad self all over the Axoloti project for a while now and it’s very inspiring. If you have a chance to pick up an Axoloti: don’t hesitate. It’s very fun and it’s scary how multi purpose it is.

1 Like
#33

I’ve been intrigued by an Axoloti a couple of times but somehow always get put off by there not being a clean and good looking ready to buy option including a case and maybe the music thing controller thingy. Or did that change?

1 Like
#34


I felt the same way now I’m being even more tempted

#35

@myecholalia @wednesdayayay same for me here. this is why i have started the development of a case and interface for the axoloti core as one of the first projects to work on with dadamachines being a label for open source music hardware.
i am happy for everyone who wants to contribute some ideas & wishes & work
i made this: https://github.com/dadamachines/axoloti_shield a long time ago… now it is finally time to build something that feels great and performs in many different ways.

what is on the menu for now?

  • steel case & aluminium or pcb frontpanel
  • oled display 1.5"
  • 8 encoders (with push button?)
  • 4x8 RGB silicon pad matrix - monome sized pads
  • 8-16 function / shift / menu RGB silicon pad buttons
6 Likes
#36

sounds cool @nevvkid, would you ship it complete… I suspect many that are holding out, are because they are not keen on constructing something themselves!?

for sure , I agree, the lack of an enclosure is important with Axoloti that puts many off.

(I’ve mentioned this many times to Johannes, urging him to release Axoloti-Control, even if its not perfect, as it will open the doors for many, but thats not his style :slight_smile: )

I also thinks its important for those that have bought the board too, I started using my axoloti ‘properly’ much more once I bought the excellent AxoControl by Music Thing , even though its quite simple (no screen etc), its helps define a use for Axoloti.
(its out of stock at the moment, but it seems to come back in to stock - ive been thinking of getting another for a while!)

as an aside, something else I think potentially is important, is critical mass for a ‘case’, opens up many interesting possibilities. once you get a few users using the same case, with the same controls, it becomes possible for users to share complete patches - turning axoloti into a complete instrument, which opens the doors for musicians who are not that keen on patching (at least initially)

Perhaps we should do a simple how to… a bit like the ‘cardboard eurorack cases’, a cardboard case, a few pots, that shows anyone can knock a case up in a couple of hours. my fear is, as soon as you show a soldering iron - you’ll knock out 80% of the target audience :frowning:

1 Like
#37

sounds like an absolutely lovely maximalist version of an axoloti “case.”
i surely believe there’d be a market for one, but it would be pretty expensive, i guess.
a much simpler version with just a couple of buttons and encoders would be sufficient for many.
maybe do both? :slight_smile:

1 Like
#38

@TheTechnobear For now i just want to build a small batch for me and some friends.
I think for most people Axoloti is still just a bare PCB which they don’t want to touch. And it would be amazing to change that perception through a clean and universal tangible interface.

I have talked to Johannes and i don’t want to take anything from his Axoloti-Control effort - but help building a format that works for the community. So i can see that the bottom steel part of the case can be used for an interface i will release and at the same time would host his interface board.
Best case the APIs on the software side and the mechanical connections to the Core are always the same.

I was planning to use a SAMD21 Microcontroller which can be programmed with arduino and interface all peripherals / interface elements to that chip. The connection between SAMD21 & the Axoloti Core could be done with SPI / SERIAL. I know that Johannes prefers to work with STM32 MCUs - but i think arduino support would be nice for the community.

Let me know what you think!? :wink:

1 Like
#39

personally i dont think you’ll be taking anything away from Axoloti Control, theres room for many designs, as Axoloti can be used in many different ways… and your design is very different from the planned Axoloti Control anyway (not that i think that even matters really)

(also Johannes has a ‘manufacture’ advantage for his design, so I’m sure he will sell plenty anyway, even with alternatives)

so I generally think, the more the merrier :slight_smile:

cost i think is tricky with axoloti, because the core board is so cheap , Im sure for many it sets a ‘bar’ thats a bit low… perhaps that can be ‘alleviated’ if the thing is sold more as a complete instrument - rather than a case.
I don’t know, its a tough one.

anyway, id love to see more designs, anything really to open up axoloti to more/different types of users.

2 Likes
#40

Hello Lines, I’d like to introduce my axocore, the Sunbox, which I created with Jens Borner, just a few months ago. It’s home is on Instagram so I hope you can check it out, give it a listen, give some feedback, always appreciated. I’m pretty new to designing Axo patches, and it can get time consuming, but am familiarising myself with euclidean, turing, microtonal tunings, tones, space and colours and plan on making a Mk2 this year.

11 Likes