Mackie Control Universal : wrong scale for faders when mapping fader to a midi control

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Yaul
Fri May 14, 2021 10:31 am

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Mackie Control Universal : wrong scale for faders when mapping fader to a midi control

[Configuration]
Windows 7
FL Studio 20.8.3 [build 2304]
Mackie Control Universal, firmware v2.1.2
MIDI configuration : see picture

[Issue]
When mapping an MCU hardware fader in "Lotsa free controls" mode, the scale is not right (min is 0.0, but max is not 1.0)

[How to reproduce]
Setting your MCU as follows
With your MCU, go to "Lotsa free controls" mode

Open a patcher in one of your channel (value are copied from FL's fader in order to check)
1) Map the fader to a button of the MCU
When not pushed, value of the patcher fader is 0.0 (0.0%) -> OK
When pushed, value of the patcher fader is 1.0 (100%) -> OK

2) Map the fader to a knob of the MCU
When the MCU knob is all the way down, value of the patcher fader is 0.0 (0.0%) -> OK
When the MCU knob is all the way up, value of the patcher fader is 1.0 (100%) -> OK

3) Map the fader to a fader of the MCU
When the MCU fader is all the way down, value of the fader is 0.0 (0.0%) -> OK
When the MCU fader is ~25% up, value of the patcher fader is 1.48415565490723E-5 -> NOK, should be ~0.25
When the MCU fader is ~50% up, value of the patcher fader is 3.23671847581863E-5 -> NOK, should be ~0.50
When the MCU fader is ~75% up, value of the patcher fader is 4.82229515910149E-5 -> NOK, should be ~0.75
When the MCU fader is 100% up, value of the patcher fader is 6.09783455729485E-5 -> NOK, should be 1.0

As a quick fix, if this can give you a hint, when mapping a fader, using the scale "Input * 16400" seems about right. But don't take this value as precise, the real value could be more or less this value.

I know this kind of issue might be hard to fix since it relies on old hardware, but if you need more information from my side feel free to ask !
Cheers to the dev' team,
Yaul
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