Looking for a fun weekend project? How about building your very own sci-fi Theremin using just a soda can and a few simple components you probably already have. Not familiar with Theremins?

[Keystone Science] recently posted a video about building a theremin — you know, the instrument that makes those strange whistles when you move your hands around it. The circuit is pretty simple ...

The theremin is an unusual instrument. You can play it without touching it. Two antennae generate an electromagnetic field and sense the position of the player's hands. One antenna is vertical and ...