Sensor

 [|drumbuddy]



This device contains several photo cells that sense light emitted from a bulb, suspended inside a spinning can with holes. The signal is then converted into sound which can be further manipulated by a series of switches and pots. When we first covered photo cells, I had not realized their potential. I have been re-born! -Ben

Jeff Ray Sensor.. The **theremin** is an early [|electronic musical instrument] controlled without contact from the player. It is named after its Russian inventor, Professor [|Léon Theremin], who patented the device in 1928. It was originally known as the **termenvox** or **aetherphone**, the former of which was subsequently anglicised to //theremin// IPA : [|/ˈθɛrəmɪn/] [|[1]] (sometimes misspelled as //theramin//). The controlling section usually consists of two metal [|antennas] which sense the position of the player's hands and control radio frequency [|oscillator(s)] for frequency with one hand, and volume with the other. The electric [|signals] from the theremin are [|amplified] and sent to a [|loudspeaker]. The theremin is associated with an [|eerie] sound, which has led to its use in [|movie soundtracks] such as those in //[|Spellbound]//, //[|The Lost Weekend]//, and //[|The Day the Earth Stood Still]//. Theremins are also used in art music (especially [|avant-garde] and 20th- and 21st-century [|new music]) and in popular music genres such as [|rock].

Not exactly a sensor... but a controller that uses touch... this is my dream gadget of the moment... a Jazz Lemur that controls Max MSP apps... here is a cool you tube video of it... http://www.youtube.com/watch?v=59JFTisR-oc also here... http://www.youtube.com/watch?v=0O70FrnH2JU&feature=related



http://en.wikipedia.org/wiki/Theremin

**Introduction**
Another type of magnetic field sensing device is the magnetic tag. Basically, the technology behind magnetic tags is the same as the one used in anti-theft alarm systems in shops, where simple inductor-capacitor circuits or magnetostrictive strips are excited by a fixed search coil. Magnetostriction is the change in the dimension of a material when subjected to an external magnetic field. The tags have specific frequencies (the “ID” of each tag) determined by their design characteristics, therefore several tags of various frequencies can be detected individually when sweeping the frequency of the coil. Whenever the sweeping frequency of the reader coil equals the center frequency of a specific tag, this tag will resonate, i.e. will be remotely excited by the coil, and the reader can identify its characteristics. The main advantages of magnetic coupled tags include the fact that they do not require line-of-sight; that is, the tag does not need to be “seen” by the reader coil, i.e. some non- metal materials may be part of the interface without influencing the measurement. Another interesting feature is that each tag can be uniquely determined – its presence in the system, as well as, depending on the tag design and complexity, its position and its orientation. Limitations include the maximum number of tags that can be identified by a system, a number dependent on the sweeping frequency range and resonance width of the tags, and the limited speed of reading. (From //Sensors and Sensor-to-Computer Interfaces//, book chapter by Marcelo M. Wanderley)Eric Caselton - http://itp.nyu.edu/physcomp/sensors/Reports/MMA7260Q -Jeremiah

accelerometers! hooray!
-eric caselton

Danny Pan - http://store.gravitech.us/7segmentshield.html

Rosemary Alonso - http://www.sensorwiki.org/doku.php/sensors/light-dependent_resistor

Light-Dependent Resistor (LDR)




 * David Rokeby** is an installation artist based in Toronto, Canada. He has been creating interactive installations since 1982. He has focussed on interactive pieces that directly engage the human body, or that involve artificial perception systems. His work has been performed / exhibited in shows across Canada, the United States, Europe and Asia.

David Rokeby []
-Meridith Henley

=**ELECTROPALETOGRAPH (EPG) **= An electropalatograph (also termed palatometer) is an instrument that records the timing and location of tongue contact with the hard palate during continuous speech. How it works: the speaker wears an artificial palate that is moulded to fit the roof of the mouth. Tongue-palate contact is recorded by a number of silver or gold contacts located on the lingual surface of the artificial palate (also termed pseudopalate). The artificial palate plugs into a multiplexer unit which is hung around the neck of the speaker. The palate is connetec to a computer that runs a Speech Pathology Software, an imagery and analysis program. It is used for speach therapy, but we can also imagine that it could help people learning new languages, to help them improve their pronunciation. Aicha Doucouré

Pathogen sensor Scientists at MIT Lincoln Laboratory have developed biosensor technology that can detect pathogens in less than five minutes. Based on the type of immune cells that produce antibodies, the technology is sensitive, accurate, and portable. Crystal

[|FLEX SENSORS] 

F lex sensors are sensors that change in resistance depending on the amount of bend on the sensor. They convert the change in bend to electrical resistance - the more the bend, the more the resistance value. They are often used in gloves to sense finger movement.

The Flexpoint Bend Sensor was developed through testing a thin potentiometer which would show analog feedback from finger movement. The Flexpoint sensors range in price from $3-$7 depending on length (1"-3"). They also add on a plastic connector casing for $0.75.

-Eric Gladstone