When I come to map a patch, I am torn between having a knob set per module or a ‘master’ knob set with the 12 most important parameters in the patch (or the collection of modules that I have loaded.)
I’d like to be able to do both, but once you map something in a knob set that has already been mapped, the original mapping disappears. Would it be possible to allow the mapping of the same parameter in different knob sets?
Hi,
It seems to me this is a “feature” (a bug?) of the VCVRack MetaModule, rather than the MetaModule hardware itself. I created a one module patch in VCVRack, created 2 knobsets, and tried to map the same knob in both knob sets. As you found, the second knob set mapping removes the mapping from the first knob set.
But, I then saved the patch to a yml file, then manually edited that file to add the knob mapping back into the first knobset - see .yml below. I was then able to load this patch onto the MetaModule hardware, and the same module knob was mapped and controllable in both knob sets.
So, hopefully this is an issue with just the VCVRack MetaModule hub module, and not on the actual device.
PatchData:
patch_name: Unnamed14
description: Patch Description
module_slugs:
0: '4msCompany:HubMedium'
1: 'AudibleInstruments:Warps'
int_cables: []
mapped_ins: []
mapped_outs: []
static_knobs:
- module_id: 1
param_id: 0
value: 0.56747
- module_id: 1
param_id: 1
value: 0.5
- module_id: 1
param_id: 2
value: 0
- module_id: 1
param_id: 3
value: 1
- module_id: 1
param_id: 4
value: 1
mapped_knobs:
- name: 'one'
set:
- panel_knob_id: 0
module_id: 1
param_id: 0
curve_type: 0
min: 0
max: 1
- name: 'two'
set:
- panel_knob_id: 0
module_id: 1
param_id: 0
curve_type: 0
min: 0
max: 1
- name: ''
set: []
- name: ''
set: []
- name: ''
set: []
- name: ''
set: []
- name: ''
set: []
- name: ''
set: []
midi_maps:
name: ''
set: []
midi_poly_num: 0
vcvModuleStates:
- module_id: 1
data: |-
{"shape":0}
Good sleuthing. Thanks. Bugfix request, then, not a feature request 
Hmm that appears to be a bug in the VCV MM Hub. It’s a regression, I think from a recent change I made to the knob sets. Should be a quick fix (it’s a holiday weekend here, so might take me a couple days).
It seems like it actually does work in VCV on the Hub to make multiple mappings to the same knob – as long as the hub knobs are different. That is, I can map Knob A in knob set 1 to my VCO Freq knob, and also map Knob B in knob set 2 to the VCO Freq knob… but I can’t map Knob A in both knob sets to VCO Freq. So until I post the fix, that might be work-around.
Multiple mappings to the same knob is definitely supported when mapping on hardware, for the very same use case you describe (a main knob set, plus additional per-module knob sets).
Ok, I think this is fixed. Interestingly, I thought for sure it was a bug in my code, but it turns out it was due to an undocumented behavior in the Rack SDK API that deletes paramHandles (aka “remote-controlled knobs”) at surprising times.
In any case, I just built v2.0.4, you can download here:
Thanks for the report!
hell yes I’m glad this was a bug not a feature. going to go edit my patch to have the same main playable knobs on all the pages so no matter what page I’m on knobs A-C will always adjust grids or whatever the hell.
Thanks Dan. All working here now.
hmm, maybe I’m reading wrong, but I can’t get this to work, I’m trying to map multiple knobs to one parameter and it still deletes the previous mapping.
specifically: If I want to have individual control over 8 filters, but then have one macro knob control them all at once, is this possible with just a click that I’m not understanding? (as noted above, it seems possible by editing code or doing it in hardware, but if I can do in VCV easily that would be neat)
for more clarity: Marked in pink thick lines is the mapping I want to do
You can map a single MetaModule knob to a maximum of 8 virtual module knobs. So the pink lines in your screen shot should work.
But – I also notice in your screenshot that those 8 knobs are mapped to panel knobs A-F and y and z. You can’t have those mapped AND the pink line mappings at the same time.
ah, gotcha, that’s exactly what I wanted to do.
Multiple meta knobs to the same virtual knob.
(I do understand it’s maybe a strange desire though, I’m just experimenting, and thought it would be fun to be able to do that!)
(I also mis-spoke above, I don’t think it’s possible in the hardware either, right? I tried, and it didn’t seem possible)
In your 8x filter patch, you could try multing CV from another knob module (e.g. Venom Knob 5) to the cutoff CV inputs on your filter modules (then set the CV amount knobs on each accordingly), then map one MM hub knob to the Venom knob.
Thanks! @phommed I’ll try the next time I get to the studio! I’m pretty new to all this stuff and I can imagine something like what you say is “possible” just not totally fluent in this new language of which parts do what 
I’m reading “patch at tweak” though and it’s helping a ton and especially all the help on forums like this. 
6 Filters.vcv (1.8 KB)
6 filters.yml (5.3 KB)
