Mutable Instruments CVPal w/ Axoloti?

#1

I'm trying to set up my Mutable Instruments CVPal so that it can receive info from Axoloti, using this patch to test it:

Looking at the CVPal online manual I should get the following when sending out to Channel 2:

OUT 1: Note CV
OUT 2: Velocity CV
GATE 1: Square oscillator playing the received MIDI note
GATE 2: Gate

http://mutable-instruments.net/modules/cvpal/manual

I don't appear to be getting anything coming out of the CVPal. Is the patch wrong in some way or should be looking at the CVPal not being 100%? The CVPal is in the "USB Controllers" thread so guess someone has this working - any ideas @mnskll ?

Thanks for any help.

#2

try changing the midi out device selection to usb host port 1

#3

Ah, that's it!

So what is the difference between the USB Device Port and the USB Host Port? I guess it's that the CVPal is looking for a host device to give it instructions rather than a USB controller device?

#4

USB defines "host ports" and "device ports", host ports are like those on a PC, rectangular shape. Full size device ports have a D-like shape. You can only connect a USB device connect to a usb host.

CVPal is a USB device...

(the USB standard also specifies an OTG ("On the go") port, that can play both roles, Axoloti does not support OTG)

There is also a MIDI USB Device port, your computer recognizes Axoloti as a vendor-specific device and a regular MIDI device, via the same USB cable. That way Axoloti can interact with regular MIDI software running on your PC.

Suggestions for clearer naming are welcome...

#5

Great, thanks for taking the time to explain that. Very helpful.

#6

I think it's fair that the Patcher sees the world from Axoloti's perspective, not the perspective of whatever it happens to be plugged into. (But I made this same mistake just a few days ago...)