I am looking for something that will take GPI (contact closures) and make MIDI out of them. Here is what I want to do. I am using the AIR DB33 organ plug-in. I play it with MIDI from a Roland keyboard. That works fine but I can't control the Leslie motor from the keyboard. I either need to use a mouse at the computer or switch the Roland to send out the words. Both are very awkward. What I want to do is build a box with three push buttons for OFF, SLOW, and FAST. I can mount the box on the keyboard similar to a real Leslie control switch. I found this...... MIDI Controllers – Highly Liquid Store ......and it looks like the right thing but I thought I would ask around before I went down that road to see if anyone has any experience solving this issue. Thanks in advance for any comments.