Well, thanks a lot for the help. I already placed the order, so the projet officially started. I ordered: 1) Core Module Kit + PIC with Boot loader installed 2) One DIN module KIT. That should be OK to encode a 32 pedal pedalboard, isn't it?. Now, I've been carefully reading the instructions to upload the sysex and if I did not understand it wrong, even if I upload a wrong configured sysex file, I will have the option to erase that program and upload another one without ruin the PIC. Also, should I have to configure the MIDI OUT sections even if there won't be a DOUT module? And the last question, for what I read it seems that only NOTE ON messages are configured, what about NOTE OFF? Thanks again nacho