[FEAT] Support for Launchpad Mini Mk3

[lucemans]

Would love to add (even if just partial) support for the Launchpad Mini Mk3.
Using this issue to document my findings so far & any progress.

As per the manual the device has two operational modes: "Live" & "Programmer".

In order to get the device to input & output proper midi, one must:

• Hold the Session button for 3 seconds
• Press the Stop Solo Mute button to enter "Programmer"-mode
• Profit, your device is now in programmer mode!

To undo, either reboot/replug your device, or:

• Hold the Session button for 3 seconds
• Press the > button (above Stop Solo Mute) to enter "Live"-mode (made for Ableton Live specifically)
• Profit, you are now a regular musician again

In addition to the above I discovered the device exposes two midi devices:

It appears the Launchpad Mini MK3 LPMiniMK3 MI does the magic. The DA variant I have yet to figure out what its for lol

A patched version (so far but still in progress) can be found on my temporary fork at lucemans/launchy.

Hope this helps! And I will keep you updated!

[lucemans]

It appears the two columns of control buttons have a bit of an odd mapping.

Here is the midi in base 10

I have remapped the top row to be 0-7 (left to right) and the side row 8-15 (top-bottom)

[lucemans]

It appears we might be able to swap between & read the state of Programmer vs Live mode 🤔

[lucemans]