thx... so i would start with: 1 core_v3-module 1 d_out-module for the relays and LED#s 1 d_in for the buttons of the unit.....maybe possible manual mode, programming (if its possible) and so on... connecting a lcd for sure. would this one work ?? WINTEK WD-C2704M-1HNN http://www.pollin.de/shop/downloads/D120232S.ZIP, maybe i got another one in stock...just have to find some time for outparting some things... the other feature of my fcb1010, it has 2 expression pedals, but i really don´t know what commands it sends while moving them... maybe i would like to try a vonversion...expression pedal value --> resistance....for example with a motorfader or programable resistor ic...i think with a stereo motorfader, it would be possible to use the 2nd pot to check the position of the unit... i guess i should build further : 1 a_in module and 1 a-out modul. is there a freeware program or so, that displays all midi commands, that my foot controller sends, when its connected to my pc ? maybe this would make it easier to understand for me. i really dunno what my expression pedals do...giving fixed values for every position or just the difference of moved way..from powering up. ok i would say...i gonna build this, would be fantastic if i could get some help for programming...and for sure i will share a complete documentation... greetz madmurdoc from germany