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== Accelerometers == | == Accelerometers == | ||
* Cheap: Wii Nunchuck - 3 axis, interface: i²c | important criteria: | ||
* Interface (simplicity, speed) | |||
* maximum acceleration (or desired range) - usually given in factors of earth's gravitation. (3g means 3 * 10m/s²) | |||
* resolution vs. range (bit depth): increased max. range usually is traded against lower resolution. | |||
* noise (the less the better) | |||
* measurement rate (the higher the better) | |||
== Examples == | |||
* Cheap and easy to source: Wii Nunchuck - 3 axis, interface: i²c (also works on cheap replacement nunchucks) | |||
* Convenient: Sparkfun ADXL335 breakout board - 3 analog voltage outputs, 3 axis. | * Convenient: Sparkfun ADXL335 breakout board - 3 analog voltage outputs, 3 axis. | ||
* MMA7455 SPI/I²C, 3 axis, [http://www.parallax.com/Portals/0/Downloads/docs/prod/sens/28526-MMA7455-3axisAccel-v1.1.pdf Datasheet][http://blogs.iad.zhdk.ch/embodied-interaction-basics-hs11/mma-7455-beschleunigungssensor/ Tutorial (German)], [http://code.google.com/p/mma-7455-arduino-library/ Arduino library] | |||
* ADXL345, SPI/I²C, [http://www.analog.com/static/imported-files/data_sheets/ADXL345.pdf Datasheet] | |||
== please leave code exmples here == | |||
<source lang="c">void foobar () {}</source> | |||
[[Category:Electronics]] | [[Category:Electronics]] | ||
[[Category:Martin Schied]] | [[Category:Martin Schied]] | ||
Latest revision as of 15:08, 4 May 2012
Accelerometers
important criteria:
- Interface (simplicity, speed)
- maximum acceleration (or desired range) - usually given in factors of earth's gravitation. (3g means 3 * 10m/s²)
- resolution vs. range (bit depth): increased max. range usually is traded against lower resolution.
- noise (the less the better)
- measurement rate (the higher the better)
Examples
- Cheap and easy to source: Wii Nunchuck - 3 axis, interface: i²c (also works on cheap replacement nunchucks)
- Convenient: Sparkfun ADXL335 breakout board - 3 analog voltage outputs, 3 axis.
- MMA7455 SPI/I²C, 3 axis, DatasheetTutorial (German), Arduino library
- ADXL345, SPI/I²C, Datasheet
please leave code exmples here
void foobar () {}