Problem with knob rx in 1.6.2?

Question

I have a layout with many knobs, some visible, and some invisible, and used as supercontrols for sets of 'radio' buttons. I use them to set values in my custom device, and to receive values from it when I change patches. These have been working fine until recently, when some of them (not all) have stopped responding to MIDI messages.

I have only noticed this problem since updating to 1.6.2, and I don't think it's a problem with my layout because I also see it with a new one with only one knob.

My test layout has a single knob, with the following settings:

Subtype: normal
Display min->max: 0-127
#ticks: 128
MIDI ch-CC: 1-3
Msg type: Control Change
MIDI min-max: 0-127
Default value: 64

This is a default knob with only the MIDI channel and CC changed to match the message my device is sending.

When I send B0 03 03 (CC, ch 1, CC 3, value 3) to MD from my device, the knob responds as expected, and is set to 3.

When I change it to limit the range of MIDI values and #ticks etc. it stops working. These are the new settings:

Subtype: normal
Display min->max: 1-8
#ticks: 8
MIDI ch-CC: 1-3
Msg type: Control Change
MIDI min-max: 1-8
Default value: 1

Now when I send B0 03 03 (which I confirm in the log, BTW), the knob always goes to 1, not 3.

Going back to my original large layout and testing several of these kinds of controls, I find that some work and some don't.

I'm running 1.6.2 on an original iPad, which sometimes struggles for memory when running MD.

Have I misunderstood something basic or is this a new problem?

Sorry that was long-winded...

Comments

Hi and thanks for this report. We're MIA and won't be able to replicate and begin fixing (assuming it's a bug) until Tuesday, July 8. We're hoping it's an issue with your layout, but we'll work this out one way or another.

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Hi, I just read this over and can already tell by the description that it's a bug in 1.6.2. As I understand it, you're saying that the incoming MIDI is scaling to the MIDI min-max, when in fact it should be limited by the MIDI min-max.

I'll have to replicate here, but if I do, it's definitely a bug and we'll move to fix it ASAP.

However, what is the correct behavior in the following situations, when the external MIDI is values 3,5,10,50?

1) MIDI Designer control is MIDI min-max 1-8
2) MIDI Designer control is MIDI min-max 8-1
3) MIDI Designer control with named ticks with MIDI values 2, 6, 7
4) MIDI Designer control with named ticks with MIDI values 6, 5, 2
5) MIDI Designer control with named ticks with MIDI values 7, 2, 6

Hmmm... we'll be meditating on this too, but hopefully will issue an update shortly.

Thanks!

Dan
Author & CEO

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Thanks for the response. I guessed it might be a scaling problem, although some of my controls appear to work and some don't, so that's a mystery. There may also be something wrong with my layout.

My own take on the scenarios you mention would be:

For MIDI values 3,5,10,50...

1) MIDI Designer control is MIDI min-max 1-8

10 & 50 would be out of range and ignored.

2) MIDI Designer control is MIDI min-max 8-1

10 & 50 ignored, 8-1 mapped as 1-8, but 8 is fully anti-clockwise?

3) MIDI Designer control with named ticks with MIDI values 2, 6, 7
4) MIDI Designer control with named ticks with MIDI values 6, 5, 2
5) MIDI Designer control with named ticks with MIDI values 7, 2, 6

For me, using named ticks implies that I'm only interested in sending and receiving those values, so anything else could be ignored.

This is just my very blinkered view - there will be lots of use cases I'm not aware of. I'm a guitarist and engineer, and I'm using MIDI for a guitar-focussed project  (see http://zaardvark.blogspot.co.uk/2014/04/pedalboard-controller-mk2.html ). I have almost no experience with MIDI for keyboards.

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Thanks. Any additional information to expand "some of my controls appear to work and some don't" would be helpful to figure out what's up in 1.6.2.

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Hi, please get in touch via Config -> Actions -> Send Us Email so we can get you set up on the Beta Team... if you want. It would be very helpful.