Difference between revisions of "Sensors"

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=== accelerometer ===
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=== Accelerometer ===
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These measure ( gasp ) acceleration.  May be caused by gravity or the second derivative of position ( relative to an inertial frame ).  Since acceleration is a vector to go the whole distace you need a 3 axis sensor, but often 1 or 2 D will do.  Often the output is a voltage(s).  Feed it to a microcontroller with an a to d converter, perhaps through an operational amplifier. [[Op amp]]
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* [http://podophile.com/2006/08/02/accelerometer-101-understanding-the-nike-ipod-sport-kit-sensor/ Accelerometer 101: Understanding the Nike iPod Sport Kit Sensor]
 
* [http://podophile.com/2006/08/02/accelerometer-101-understanding-the-nike-ipod-sport-kit-sensor/ Accelerometer 101: Understanding the Nike iPod Sport Kit Sensor]
  
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* [http://www.sparkfun.com/commerce/product_info.php?products_id=849 Accelerometer Breakout Board - ADXL322 +/-2g SKU#: SEN-00849 Price: $29.95] From SparkFun.  Also links to other info.
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* [http://www.dimensionengineering.com/DE-ACCM2G.htm Buffered ±2g Accelerometer Product ID: DE-ACCM2G Price: $22.95] Also other links.
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*[[PIC Links]] Then search for Accelerometer.
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=== gas sensor ===
 
=== gas sensor ===
 
* [[Image:4514.jpg|100px]] [[MiCS 4514]] CO and NOx sensor
 
* [[Image:4514.jpg|100px]] [[MiCS 4514]] CO and NOx sensor

Revision as of 10:58, 28 February 2008

Accelerometers, Gyroscopes, Temperature Sensors, Pressure Sensors, ...


Accelerometer

These measure ( gasp ) acceleration. May be caused by gravity or the second derivative of position ( relative to an inertial frame ). Since acceleration is a vector to go the whole distace you need a 3 axis sensor, but often 1 or 2 D will do. Often the output is a voltage(s). Feed it to a microcontroller with an a to d converter, perhaps through an operational amplifier. Op amp


gas sensor


magnetic field sensor

Photo Diode/Transistor


Rotary Encoder

Further reading