[LAD] computer keyboard control surface update

Len Ovens len at ovenwerks.net
Thu Aug 7 18:43:39 UTC 2014

On Thu, 7 Aug 2014, Paul Davis wrote:

> On Thu, Aug 7, 2014 at 2:28 PM, Paul Davis <paul at linuxaudiosystems.com> wrote:
>       On Thu, Aug 7, 2014 at 1:44 PM, Len Ovens <len at ovenwerks.net> wrote:
>             On Wed, 6 Aug 2014, Len Ovens wrote:
>                   I do have a question though about ardour
>                   control by midi. The Mackie IF says it sends
>                   control messages that are in the form num of
>                   ticks up or down. This means I should be able
>                   to have a key send ticks up and another ticks
>                   down, but this doesn't seem to work.
> It does work... but only into the the mackie midi in. It only seems
> to expect 0 to 100 ticks which is probably not enough for a fader
> anyway. This is probably due to physical limitations in the encoders,
> getting more than 96 or so ticks per full turn starts to get
> Ardour has an internal scaling factor for those ticks, or did at some
> point. The Mackie D8B mixer had similar issues with its scroll wheel. We
> seem to have removed it.

There seems to be some scaling for the encoders too, Sometimes one tick 
moves one notch and sometimes two... probably to get 100 out of 96, which 
makes sense(defaults to pan, I haven't tried other modes yet). I have not 
played with the scroll as yet.

> correction. the scaling factor was ONLY for the scroll wheel. faders work fine
> for me on an SSL Nucleus usng Mackie Control, which I strongly recommend (Mackie
> Control (or the Nucleus if you want to pay for it :)

So far I have spent $3 on this surface  :)  I expect the key labels will 
cost more than that though. Still, it is already very usable in the form 
it sits. I think if I do 5 or 6 channel banks I will have as complete 
channels as possible. If I just use the controller and make my own switch 
panel, I could get the full 8 + master and transport. I am aiming for 
half.. The encoders and "faders" will have their own HW.

Len Ovens

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