Hello, I am working on a midi pedalboard for guitar effect switching. The idea is to have presets memorized in it, regrouped in banks of 10. 10 switchs will permit to select the wanted program in a bank, and two other switches (Up and Down) will permit to select the wanted bank. (It is that way most of guitar pedal board work) Do i have to change the core program for that? I am ok with the need of : - a core module - a Din for the switches - a Dout for the leds - a Ain for an optional external expression pedal I would like to be able to define the presets of each banks directly on the pedal board (without the use of a computer). Therefore i think i need the LCD module to be able to do that, don't I? Moreover, do i need the Bankstick to memorised my presets? I want them to be kept even is the board is not powered... Each preset will have to command up to five midi devices. Is it a pb? At least, i have to have in it 4 commanded switches to replace my amp control. How can i do that? the midi device commanded by the external expression pedal (analog) can change according to the preset... here is an example of a preset: - Switch1 on - Switch2 off - Switch3 on - Switch4 off - external midi device 1: prog114 - external midi device 2: no change - external midi device 3: prog 10 - external midi device 4: no change - expression pedal command the whawha effect on the device 3. Sorry for all these questions, and this long message... Thank you for your help. Alex