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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 I2C/SPI, tested successfully on Arduino, 3 axis | |||
* ADXL345, I2C/SPI, tested successfully on Arduino, [[http://www.analog.com/static/imported-files/data_sheets/ADXL345.pdf]] | |||
== please leave code exmples here == | |||
<source lang="c">void foobar () {}</source> | |||
[[Category:Electronics]] | [[Category:Electronics]] | ||
[[Category:Martin Schied]] | [[Category:Martin Schied]] | ||
Revision as of 23:49, 1 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 I2C/SPI, tested successfully on Arduino, 3 axis
- ADXL345, I2C/SPI, tested successfully on Arduino, [[1]]
please leave code exmples here
void foobar () {}