Didn’t know this. Thanks for the hint.
Just to follow up @chrtlnghmstr that was a useful tip, thanks. Everything worked from the defaults apart from as you say knobs 1 and 9 which I set to ‘absolute’. I’ve left the pads as midi notes and using either MIDI-GATE or MIDI-MAP to consume them in Rack.
I’m very pleased with the Mini Lab. It’s a different style of operating from the Akai MPK mini which doesn’t have endless knobs. Swings and roundabouts - with the Akai you can see the absolute knob position from the keyboard itself (which is good) but you have to set them right for each patch to get a default sound you want when you load the patch (not so good). With the Arturia you can’t see the knob setting but when you load a patch it comes in ‘right’ and the knobs then move the setting from those defaults (good).
But then the mini lab has the pitch and mod strips and 16 knobs, so that swings it for me.
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Oh, and the Akai has the little USB mini connector - a bit fragile for my liking. Ok in the studio. The Arturia has the nice chunky USB-B connector.
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Glad it’s worked out for you! 
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Hello I bought a Minilab too and used it with PILE to manage endless knobs within VCV Rack. If it can help have fun
A last note on this, after some time using it.
There is a bit of awkwardness (no more than that) with the Knob Absolute/Relative knob settings. In Absolute mode, they work with MIDI-CC and MIDI-CAT. best with MIDI-CAT because of all the extra utlities, locking parameters, custom labels etc. Once you have twiddled all the knobs, the CC values are picked up.
The difficulty is when you change patches. The minilab knobs remember their CC values - but of course you can’t see them because of their endless nature. So when the new patch starts up, you do have to twiddle the knobs to pick up the values. MIDI-CAT has three useful modes for this pickup, but in practice your going to loose your settings saved with patch.
The ideal thing would be Relative mode, so the knobs only change the value from it’s read-in-setting. It’s no doubt that @stoermelder 's MIDI-STEP and PILE give the best result, but you’d need 16 individual PILE modules to map all the knobs using relative mode.
Not a complaint or a call to action. Just a note that might be helpful. Although if a version of PILE with 16 I/Os is in the pipeline, then I’d be delighted for one…
hello
I did use polyphonic connection between MIDI STEP & PILE
Have fun
Ah ha. I missed that. Now that’s actually brilliant.
I still can’t see the knob values very easily. Picky, picky. Off in search of some kind of indicator panel…
upload this patch via STRIP to your patch
I did connect the knobs to a voltmeter 
Arturia.vcvss (10.0 KB)
have fun
That STRIP file crashed rack unfortunately, but I get the idea. I should have read the manual for POLY-PILE 
But…there’s been a lot of things to read
Can you provide the log-file for this crash? Works fine on my side an I’d like to check whats wrong here…
I quickly reworked my minilab module in reverse - so the knobs now show the voltage on the input. There’s probably better ways to indicate it, but I think this idea covers all the bases. The Arturia knobs work nicely in Relative mode, the patch doesn’t lose its saved values and you can see what the value is.
I couldn’t find an equivalent ‘Indicator Panel’ module on first look, bet there is one.
I don’t own this MIDI controller but usually this is what MIDI feedback is for: initializing your controller with values of the mapped parameters. Does it not work when you select your controller as output device in MIDI-CAT?
Thanks, I will check what’s wrong.
I did try that, but it didn’t seem to do anything. Could be I don’t know what the right settings are. I just chose the same midi controller and the same channel (for the output). In many ways I prefer this new idea - for one thing the adjustment feels smoother. That may be because of the tweakable step value in PILE.
That is strange, it should work choosing the same device and channel. As I said I don’t own this device so I can’t really check. I own a Arturia BSP so I will test there.
Actually, in the next update of PackOne MIDI-CAT will finally have adjustable smoothing, a long requested feature. But you’re right, for endless knobs MIDI-STEP fits much better 
hum, strange, this was taken from a patch I did a couple of months back and I can still open it. I hope Ben @stoermelder will figure it out with the log file.
now you have the idea to save space, modules & cpu with polyphony 
have fun
Update - the Arturia.vcvss worked after I subscribed to NYSTHI, because I was searching for a multi-volt display.
This is pretty good, although O/P #1 comes out as polyphonic. It does seem to work e.g. into the mixer. I guess that depends on module it’s going into to pick channel 1.
If only Graphic Meter had custom labels
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