1.0 is great for me, especially when you compare it with Arduino based boards dev environments.
Sure, it does not have real time patching capabilities like the clavia modulars but the compile and upload times are ultra fast (compared to the Daisy for example).
Even today nothing matches the Axoloti.
I couldn't agree more!! And I still have hope for an updated axoloti in the future. Current supply situation is very difficult though, even teensies are not available anymore (from pjrc)
We're in the same boat. Frankly the hardware side is not that difficult or special (except it seems like the "highest" quality parts possible were used in the original Axoloti board, IMHO partly with questionable benefits and, as we are finding out now, uncertain future availability).
Anyway I am continuing to refine my Axoloti Eurorack module/pedal, and when I've come up with something stable and fool-proof enough I'll post it here.
After a long time obsessing about the hardware details (and waiting until the chip shortage returns to halfway acceptable prices) I have finally ordered a new prototype.
It will run a slightly modified firmware (just some changes in pinout) and should be 99% compatible to existing axoloti patches. 99% compatible meaning you'd have to remap some of your digital in/out pins. This can be easily done using drop-in replacement objects.
The shape of the PCB is due to my focus on running it in Eurorack and as you can see it does not have audio and MIDI jacks. Just personal preference. I always felt the combined stereo jacks on the Axoloti weren't very convenient, so I designed it in a way that although you could get going without any soldering (using USB power), you'd at least have to solder some audio in/out jacks or ideally have it plug into a simple power & control surface board to get proper use of it.
Now I feel that the graphic should have been some amphibian and not my cat, Azoo.
Wow this looks absolutely amazing. Excited for any further updates! What is your ultimate goal? 
IMHO what makes Axoloti so brilliant is the patcher and all its functionality. However the hardware has been out of stock forever and may not be available anymore.
The goal is to recreate Axoloti hardware with minimum incompabilities,
but split the design into core board and control surface I/O board, so you can use it in a Eurorack module, a guitar pedal or just a barebones sound generator board.
fantastic news, thank you!
while i was quite content with the original design of having I/Os and midi on the same board, i follow your reasoning of splitting them from the core board. the gain in flexibility may well outweigh the blow to my laziness in creating breakouts.
This is interesting.
Is it the same STM32 as Axoloti Core?
Is it using the same Chibios version?
Yes it is the exact same STM32F427 just in a different package: LQFP-144 and not BGA-176 (which is why a few pins had to be rerouted)
You could run any firmware you like on it just with the original axoloti, that being said I focus my firmware branch on the final v1 release (with chibios 2.6.9 I believe) just before that last beta v2 release.
Awesome to see somebody who knows what he is doing recreating the hardware! I'm 100% supportive of that initiative and be willing to buy a few boards if you would make these available in the future!
Well done!
Anyone have an idea for a fitting name? It should be in respect to, and related to, Axoloti of course. Right now my working title is axo-427-core but I like to think of it as Project Regrown Limb.
I like names that don't try to be clever.
Something to keep in mind: Maybe Axoloti (almost?) died because the price was too low.
Wow this is huge! Big aplause from me too!
I have one qestion regarding the layout: If you plan on using this as euroroack, would you have the usb c and sd card slot accessible from the panel?
If you were to do so it would feel more logical to have them on the longer side of the board. Anyways just a minor observation, it's great news something is happening with this project!
Legit question! The SD card and both USB pins are on header pins and in Euro I'll put all three accessible on the Frontpanel. It would be animal abuse to not allow an Axoloti instant programming.
Unfortunately the C-shaped header pins placement is quite fixed by now. This is so that there is enough space for a reasonable pot and button layout on the planned frontend board(s), and that is also why the USB jacks and SD slot are at the top. There is quite some circuitry for power management around the USBs.
At first I planned to leave out all connectors on the core board but felt it'd be much better if you had a minimal functionality where you could plug the core in as it is and get started (btw the recent revision has pads for a 3.5mm headphone jack squeezed onto the PCB bottom)
