An open source midi controller user for the Roland SP-404 sampler by Davide Gironi:
The Roland SP-404 is a digital sampler made by Roland Corporation.
This sampler has an input midi port, and expose a set of midi commands to control the unit.
With this project user can control Roland SP-404 using a Midi Pedal.
With the pedal user can change the bank of the sampler and also switch on / off samples. It is a pedal extentions of the button matrix in front of the sampler.
Check out the video after the break.