Akai APC Key25 mk2 driver

I cannot find any official sources, but the protocols differ quite a bit between the first edition and mk2.

There is no pulsing, no intensity, and way less colors.

What I did find is this (on GitHub - rogribas/AKAI-APC-Key-25-LED-Feedback-fix: Solution to fix bug in AKAI APC light feedback)

Each button of the APC Key grid corresponds to a note, the midi message to change the led color is:
NOTE_ON + <note_of_the_button> + VELOCITY_VALUE

The velocity value defines which color the led should be:

0=off,
1=green,
2=green blink,
3=red,
4=red blink,
5=yellow,
6=yellow blink,
7-127=green

Ableton Live sends the following message when the midi mapped control is OFF:
NOTE_OFF + <note_of_the_button> + 64

Hello I’m back after a while trying to fix the issue related to light.

In the meanwhile, is the configuration of the init file as described in section 2.10.1 of Contributing to Zynthian Development - ZynthianWiki still necessary? The init.py is not present anymore in the ctrldev folder. After an update I’m trying to repeat the steps made to load the driver for the APCKEY25, but it does not work. Thanks in advance

Yup, that changed a while ago: