Now wats a theremin:
well don`t bother to wiki it as i have what it says:
The theremin originally known as the aetherphone/etherophone, thereminophone or termenvox/thereminvox is an earlyelectronic musical instrument controlled without discernible physical contact from the player. It is named after its Russian inventor, Professor Léon Theremin, who patented the device in 1928. The controlling section usually consists of two metal antennas which sense the position of the player’s hands and control oscillators for frequency with one hand, and amplitude (volume) with the other, so it can be played without being touched. The electricsignals from the theremin are amplified and sent to a loudspeaker.
This physical contact can be a physical quantity in my case its light intensity ..which is measured using an LDR.
The pitch is controlled based on the analog value obtained from the microcontroller using ADC and the volume control is optional and possible with a 1k Pot.
The video shows my theremin although i was not quite able to play it ..ahmm i managed to get that classic scottish sound and also that of a police vehicle..
I did this quite a while back..However if anyone needs the code..you can ask for the same in the comment box!