Beware of 'Reverse Polarity'

Not sure of a 'multiple board'? Could be possible if the pedal board can transmit MIDI Note values, and how you set up your pads (IE: Press the pedal so the pad 'sustains', press the pedal again to 'stop' the loop - or another pad as a 'one shot', just press another pedal, and the pad plays a long sustained sample and stops when finished) Not familiar myself with 'pedal boards'.

But beware that Roland uses a reversed polarity on it's footswitch to that of Yamaha and every other maker I think. So if you even have a 'sustain pedal' - it may 'sustain' until you press the pedal, and then it will stop and start again when you release the pedal. Not right!