Hello,
Some explain about the photos published by Jérome .
This projet , in four slim 19" rack , contained 2 seq ( V4 & V3 ) four leds ring and other personnal midibox.
It contained 6 DB50XG yahamha sound card to , sound incredible and spécial midibox for editing QS300 sound .
Actually 90% is done an fonctional. ( sorry for my poor english).
Thank to Jérome for these beatiful printred board easy to start, rack mounting are also easy as you se on the photos.
I am very busy those time ( job and familly ) I hope in some time y could answer question on the forum.
But only for fun...