Hello folks here is my new midibox project : The Rainbow For the moment it is based on BLM example v1_2, I improved it to manage RGB Leds. It works as a midi keyboard responsive to midi messages. It has only 3 tests functions for today. I am writing the code. It will be a super versatile midi controller, having several layers, sequencing capabilities ( clock, arpegiattor, midi tracks, support of midi files ...) ; it has 64 buttons with leds and a 4x20 LCD display for the moment. I will