MIDI CAT config for midi thru?

[declan.a.halpin]

Hi all (especially @stoermelder),

I am using MIDI CAT to connect an Akai MidiMix to MixMaster. My issue is NOT about midi feedback to the MidiMix…

The mapping works great. When I move a fader on the MidiMix, I see and hear the VCV parameter responding correctly. But when I put that Reaper track in Latch mode, the VCV parameter is ignored if I adjust via the MidiMix. If I use my mouse and move the same VCV parameter, it is recorded as automation in Reaper. What’s really strange is that I can see the Reaper automation fader moving during Latch playback, but the envelope is not affected (when using the MidiMix). But again, if I use my mouse to control the same parameter, the envelope is recorded as expected… Is it a Reaper issue?

Here is a video showing the issue. Sorry for the quiet audio…

https://drive.google.com/file/d/1w4K…ew?usp=sharing

Update: I put a midi event monitor after VCV Rack, and confirmed that the same midi CC# is being sent on Channel 1 regardless of if I’m using the mouse or the hardware controller…

Update 2: If I use Reaper’s FX Window “Param/Learn” to map the hardware controller, it works as expected (records automation while using the controller).

[stoermelder (Ben)]

This is expected behavior at the moment (if I understand you correctly). Explanation see here.

stoermelder's Idea und Development Thread

Hi, unfortunately this is trade-off I had to make, because reporting all parameter updates back to the plugin host causes huge CPU usage. I don’t know why (as the plugin version of VCV Rack is not open source), but I had contact with VCV support in the early stage of conversion to Rack v2 and this is what they suggested. Maybe I can add a setting for the this, but it will come with the CPU usage, which might cause other issues for you.

I can add an option for this behavior in the next update, as I did for TRANSIT.

[declan.a.halpin]

Ah, ok - at least i can stop scratching my head! Thanks for the prompt reply. I’ll keep an eye out for the next update.

Cheers!

[declan.a.halpin]

Hi Ben, just pulling this topic back over here to this thread (sorry for hijacking the other one). Per your post over there, I have downloaded the *.vcvplugin and placed it in my /Rack2/plugins-win-x64/Stoermelder-P1 folder.

I have MIDI-CAT v2.1.0 now, is that the Dev build? I don’t see the “report parameter changes” option that Transit has:

This is my first manual install of a vcvplugin, so I’m pretty sure I’ve done something wrong….

[stoermelder (Ben)]

The plugin file must be placed at the root of the plugin-folder (/Rack2/plugins-win-x64/), it will be extracted automatically on the next start of Rack. The version should display 2.1.xxxxxx with some random chars, the library version shows as 2.1.0.

[declan.a.halpin]

Ah, I was so close! That fixed it. Thanks again!