Hey there,
I started to write a little Plugin which can Controll the Novation Launchpad.
Firstly thanks for that great and easy Midi class! very impressiv and awesome <3
So first step was to enable a button light on the Launchpad. That can be done easily with a Note on Message.
So my code was like this:
midiOutput->sendMessageNow(MidiMessage::noteOn(1, 45, 0.2f));
That was working great. So i tried to change the led colour (the velocity changes the colour).
So my next code was like that:
midiOutput->sendMessageNow(MidiMessage::noteOn(1, 45, 0.8f));
nothing changed 
I tested a little bit arround and figure out that it seems like there is a Problem with the floatValueToMidiByte() function. In my case it returns only “f”…
I deleted the noteOn function with the float parameter and used the noteOn with the uint8 parameter function function directly. That works perfect.
Did i do something wrong or is there an issue with the Juce framework?
Thanks and have a nice day 