USB Midi Controllers

[chaocrator]

Roland MC-707: does NOT work
(so i have to occupy its MIDI In for using Axoloti as arpeggiator)

since OS version 1.60, MC-707 works with USB driver mode set to Generic.

[PabloEnelotromundo]

Korg Volca Keys with midi out mod working properly.

[chaocrator]

CME/WaveIdea Bitstream 3x: works!

[hitachii]

The Elektron Digitakt and all of its features works magnificently with the Axo via USB and Din. The Novation Launchkey Mini MkIII also works without issue (including the Launchkey's built-in arpeggiator!).

Have been running midi via the UART pins and no resistors without issue. Mentioning that because it was sort of unclear whether they were required for UART in the same way that they are for using the pins behind the Din connector. Though, I'm not TX from the Axoloti so maybe things will change and will require the resistors and octocoupler when I do?

[ivofx]

CME/WaveIdea Bitstream 3x

That controller looks really cool, could not find it on eBay or Amazon however. You lucky
https://www.soundonsound.com/reviews/cme-bitstream-3x

Interestingly, when following the URL written on the unit, we see a sort of portfolio of devices that the creator worked on which includes the Teenage Engineering OP-1:

http://www.waveidea.com/electronics/

[chaocrator]

yes, Bitstream 3x not easy to find hese days, it was discontinued long time ago.
used to be my dream controller around 2005–2006, so finally i got it.

[kale]

also the alesis V61 is working fine

[nicotep]

(not strictly a USB Midi controller but) Op-z is working fine both as a controller and a sequencer, sending clock too, directly from the USB. No need of the $$$ Oplab

[floodcomics]

Korg SQ64 will not work via USB, regardless of Axo power source (USB or PSU, tested @ 7, 9 and 12V)

[hitachii]

Interesting. Are you using USB MIDI or with the TRS cable? Not sure if the SQ64 does or doesn't send MIDI over USB, but Axoloti recognizes my Minilogue xd through USB. It should recognize the TRS MIDI by default.

If you're trying with a MIDI Din to TRS adapter and it's not working, did you by chance order it off of Amazon? I bought one for another reason and I hadn't seen the reviews that it was falsely advertised. It was 5 pin DIN, but was wired for old testing equipment or something.

[floodcomics]

The SQ64 does do USB MIDI, but the Axoloti can't deliver sufficient power to run the SQ64 via USB. TRS MIDI (type A) works without issues.

Maybe you got a type B cable - it's not such a difficult soldering job to convert from A to B though:

[Updated] How to Make Your Own 3.5mm mini stereo TRS-to-MIDI 5 pin DIN cables