I hope I can write what I´m looking for in english... ;-)
My idea is to control max/msp with proximity sensors. I mean: if I move my hand to this sensors they send a message to a interface and it transforms this message into MIDI messages. I would like it be sensible to my proximity (values sent change if I move my hand to or from the sensor) Any idea of what I need for this? Oh, and I forgot: not too much expensive ;-)
I hope I have explained well...
Thanks and best regards!