On Wed, June 19, 2013 9:30 am, Rusty Perez wrote: USB keyboards are cheap (I'm talking about the qwerty kind). Inside is a tiny circuit board and lots of switches. Figure out the lines that go to the space, left arrow, right arrow (or whatever you think would be useful). Most programs will deal with key strokes. If you want it to be separate from your desktop KB there are ways of doing that probably in X or use a raspberry pi and run netjack and jack_transport or jack.transport... Or no jack at all on the pi and just have it ssh into your computer and run jack_transport. The same thing can be used for making a foot switch to advance impress/lyricue/or other presentation SW for displaying lyrics or a chord chart for that matter. Very simple project... put pc board in box, put how ever many 1/4 inch jacks you want foot switches for. Get epiano sustain pedals to plug in (make sure they are normally open or changeable). The pc card will have two sets of contacts for scanning, so each switch will be connected one contact on each set. I normally follow the traces back that go to the switches I want. I don't know about now, but it used to be Yamaha and Roland switches were opposite... One being NC and the other NO. Take an Ohm meter to the music store :) (this one would work for sure: http://www.sweetwater.com/store/detail/KSP20/ as it is switch-able) Don't worry about running out of switches... 101 should be enough to keep your foot tapping happily. -- Len Ovens www.OvenWerks.net