This project modifies a $5 Staple's Easy Button and an inexpensive USB keyboard so that they can be used as an input device for live musical performances (or anything else that requires a button or footswitch). It alllows cheap buttons to be created that each send a keyboard character as input to a program. In addition, the proceeds of easy button sales go to the Boys and Girls Club of America.
The project is standing on the shoulders of two other hacks. First, this project
hacked an easy button into a switch for a garage door. Second, Dave Merrill
, who I am involved with in the EMI (Experimental Musical Instruments Workshop) at MIT (see inventmusic.org
), had taken apart a keyboard to create footpedal for the ctrl, shift, and alt keys for use when his arm was in a cast. His project details are here
The motivation behind this project was a performance called Mandala
at SIGGRAPH 2006 ( video clip
) as part of their electronically mediated performances series. Six musicians sat around a circle projected onto the floor that gave instructions to each individual about what and how to play. A computer program generated these instructions and therefore lead the improvisation of the group. Foot switches were needed so that the musicians could communicate with the program (e.g., when the sheet music should be scrolled, voting for song changes, etc.). The Mandala program was written in Flash but future projects will use Pure Data (PD), Java, and other languages. All that is needed is the ability to programmatically read input from a keyboard.
About one and a half days was required to complete this for someone who had never soldered before (thanks to Ben Vigoda
, the main instigator for the Mandala Project, for lessons and helping me figure out the details of the electronics).