Test your soldering (and telekinesis) skills with this fun and simple theremin project. Despite its small size, it can create a wide variety of extraterrestrial sounds - simply wave your hand in front of the spaceship and listen to how the sound changes. For even more alien sonic fun, connect the pad marked "ANT" to various metal objects to act as an antenna.
To change the frequency of the waveform, simply change the two ceramic capacitors for various values (27pF and 47pF included) and make lots of out-of-this-world sounds.
The theremin only requires a 9V battery and the output is via a 3.5mm stereo jack socket.