This is MORE than another optical theremin. This is a SOLAR POWERED theremin. The Heliophone, an electronics kit available from: http://www.clockworkrobot.com The theremin was the worlds first electronic musical instrument and this tiny kit version has the added advantage of working with no need for batteries or external power. It works purely on solar power so when the oil runs out and civilisation crumbles to dust, you'll be glad it's not the end for electronic music. More information about the solar theremin can be found here: http://homepage.ntlworld.com/kinetic-arts/sculpture/gallery7/1.htm The kit is very easy to build and suitable for beginners in electronics. It does require some soldering though. Author: MarbleMad Keywords: solar theremin beam circuit bending electronics kit music Added: June 12, 2008 Less